update ftp browser, enable folder downloads (local), reimplemented timer. Enhanced project view

- Updated roster.html to include a new option for Sound Level Meter in the device type selection.
- Added specific fields for Sound Level Meter information, including model, host/IP address, TCP and FTP ports, serial number, frequency weighting, and time weighting.
- Enhanced JavaScript to handle the visibility and state of Sound Level Meter fields based on the selected device type.
- Modified the unit editing functionality to populate Sound Level Meter fields with existing data when editing a unit.
- Updated settings.html to change the deployment status display from badges to radio buttons for better user interaction.
- Adjusted the toggleDeployed function to accept the new state directly instead of the current state.
- Changed the edit button in unit_detail.html to redirect to the roster edit page with the appropriate unit ID.

.gitignore

@@ -211,3 +211,4 @@ __marimo__/
 *.db
 *.db-journal
 data/
+.aider*

CHANGELOG.md

@@ -1,99 +1,10 @@
 # Changelog
 
-All notable changes to Terra-View will be documented in this file.
+All notable changes to Seismo Fleet Manager will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.5.0] - 2026-01-09
-
-### Added
-- **Unified Modular Monolith Architecture**: Complete architectural refactoring to modular monolith pattern
-  - **Three Feature Modules**: Seismo (seismograph fleet), SLM (sound level meters), UI (shared templates/static)
-  - **Module Isolation**: Each module has its own database, models, services, and routers
-  - **Shared Infrastructure**: Common utilities and API aggregation layer
-  - **Multi-Container Deployment**: Three Docker containers (terra-view, sfm, slmm) built from single codebase
-- **SLMM Integration**: Sound Level Meter Manager fully integrated as `app/slm/` module
-  - Migrated from separate repository to unified codebase
-  - Complete NL43 device management API (`/api/nl43/*`)
-  - Database models for NL43Config and NL43Status
-  - NL43Client service for device communication
-  - FTP, TCP, and web interface support for NL43 devices
-- **SLM Dashboard API Layer**: New dashboard endpoints bridge UI and device APIs
-  - `GET /api/slm-dashboard/stats` - Aggregate statistics (total units, online/offline, measuring/idle)
-  - `GET /api/slm-dashboard/units` - List all units with latest status
-  - `GET /api/slm-dashboard/live-view/{unit_id}` - Real-time measurement data
-  - `GET /api/slm-dashboard/config/{unit_id}` - Retrieve unit configuration
-  - `POST /api/slm-dashboard/config/{unit_id}` - Update unit configuration
-  - `POST /api/slm-dashboard/control/{unit_id}/{action}` - Send control commands (start, stop, pause, resume, reset, sleep, wake)
-  - `GET /api/slm-dashboard/test-modem/{unit_id}` - Test device connectivity
-- **Repository Rebranding**: Renamed from `seismo-fleet-manager` to `terra-view`
-  - Reflects unified platform nature (seismo + SLM + future modules)
-  - Git remote updated to `terra-view.git`
-  - All references updated throughout codebase
-
-### Changed
-- **Project Structure**: Complete reorganization following modular monolith pattern
-  - `app/seismo/` - Seismograph fleet module (formerly `backend/`)
-  - `app/slm/` - Sound level meter module (integrated from SLMM)
-  - `app/ui/` - Shared templates and static assets
-  - `app/api/` - Cross-module API aggregation layer
-  - Removed `backend/` and `templates/` directories
-- **Import Paths**: All imports updated from `backend.*` to `app.seismo.*` or `app.slm.*`
-- **Database Initialization**: Each module initializes its own database tables
-  - Seismo database: `app/seismo/database.py`
-  - SLM database: `app/slm/database.py`
-- **Docker Architecture**: Three-container deployment from single codebase
-  - `terra-view` (port 8001): Main UI/orchestrator with all modules
-  - `sfm` (port 8002): Seismograph Fleet Module API
-  - `slmm` (port 8100): Sound Level Meter Manager API
-  - All containers built from same unified codebase with different entry points
-
-### Fixed
-- **Template Path Issues**: Fixed seismo dashboard template references
-  - Updated `app/seismo/routers/dashboard.py` to use `app/ui/templates` directory
-  - Resolved 404 errors for `partials/benched_table.html` and `partials/active_table.html`
-- **Module Import Errors**: Corrected SLMM module structure
-  - Fixed `app/slm/main.py` to import from `app.slm.routers` instead of `app.routers`
-  - Updated all SLMM internal imports to use `app.slm.*` namespace
-- **Docker Build Issues**: Resolved file permission problems
-  - Fixed dashboard.py permissions for Docker COPY operations
-  - Ensured all source files readable during container builds
-
-### Technical Details
-- **Modular Monolith Benefits**:
-  - Single repository for easier development and deployment
-  - Module boundaries enforced through folder structure
-  - Shared dependencies managed in single requirements.txt
-  - Independent database schemas per module
-  - Clean separation of concerns with explicit module APIs
-- **Migration Path**: Existing installations automatically migrate
-  - Import path updates applied programmatically
-  - Database schemas remain compatible
-  - No data migration required
-- **Module Structure**: Each module follows consistent pattern
-  - `database.py` - SQLAlchemy models and session management
-  - `models.py` - Pydantic schemas and database models
-  - `routers.py` - FastAPI route definitions
-  - `services.py` - Business logic and external integrations
-- **Container Communication**: Containers use host networking
-  - terra-view proxies to sfm and slmm containers
-  - Environment variables configure API URLs
-  - Health checks ensure container availability
-
-### Migration Notes
-- **Breaking Changes**: Import paths changed for all modules
-  - Old: `from backend.models import RosterUnit`
-  - New: `from app.seismo.models import RosterUnit`
-- **Configuration Updates**: Environment variables for multi-container setup
-  - `SFM_API_URL=http://localhost:8002` - SFM backend endpoint
-  - `SLMM_API_URL=http://localhost:8100` - SLMM backend endpoint
-  - `MODULE_MODE=sfm|slmm` - Future flag for API-only containers
-- **Repository Migration**: Update git remotes for renamed repository
-  ```bash
-  git remote set-url origin ssh://git@10.0.0.2:2222/serversdown/terra-view.git
-  ```
-
 ## [0.4.2] - 2026-01-05
 
 ### Added

Dockerfile.sfm

@@ -1,26 +0,0 @@
-FROM python:3.11-slim
-
-# Set working directory
-WORKDIR /app
-
-# Install system dependencies
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends iputils-ping curl && \
-    rm -rf /var/lib/apt/lists/*
-
-# Copy requirements first for better caching
-COPY requirements.txt .
-
-# Install dependencies
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy application code
-COPY . .
-
-# Expose SFM port
-EXPOSE 8002
-
-# Run SFM backend (API only)
-# For now: runs same app on different port
-# Future: will run SFM-specific entry point
-CMD ["python3", "-m", "app.main"]

Dockerfile.slm

@@ -1,21 +0,0 @@
-FROM python:3.11-slim
-
-WORKDIR /app
-
-# Install system dependencies
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends curl && \
-    rm -rf /var/lib/apt/lists/*
-
-# Copy requirements and install dependencies
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy application code
-COPY app /app/app
-
-# Expose port
-EXPOSE 8100
-
-# Run the SLM application
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8100"]

Dockerfile.terraview

@@ -1,24 +0,0 @@
-FROM python:3.11-slim
-
-# Set working directory
-WORKDIR /app
-
-# Install system dependencies
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends iputils-ping curl && \
-    rm -rf /var/lib/apt/lists/*
-
-# Copy requirements first for better caching
-COPY requirements.txt .
-
-# Install dependencies
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy application code
-COPY . .
-
-# Expose Terra-View UI port
-EXPOSE 8001
-
-# Run Terra-View (UI + orchestration)
-CMD ["python3", "-m", "app.main"]

MIGRATION_BASELINE.md

@@ -1,141 +0,0 @@
-# Terra-View Modular Monolith - Known-Good Baseline
-
-**Date:** 2026-01-09
-**Status:** ✅ IMPORT MIGRATION COMPLETE
-
-## What We've Achieved
-
-Successfully restructured the application into a modular monolith architecture with the new folder structure working end-to-end.
-
-## New Structure
-
-```
-/home/serversdown/sfm/seismo-fleet-manager/
-├── app/
-│   ├── main.py                    # NEW: Entry point with Terra-View branding
-│   ├── core/                      # Shared infrastructure
-│   │   ├── config.py             # NEW: Centralized configuration
-│   │   └── database.py           # Shared DB utilities
-│   ├── ui/                       # UI Layer (device-agnostic)
-│   │   ├── routes.py             # NEW: HTML page routes
-│   │   ├── templates/            # All HTML templates (copied from old location)
-│   │   └── static/               # All static files (copied from old location)
-│   ├── seismo/                   # Seismograph Feature Module
-│   │   ├── models.py             # ✅ Updated to use app.seismo.database
-│   │   ├── database.py           # NEW: Seismo-specific DB connection
-│   │   ├── routers/              # API routers (copied from backend/routers/)
-│   │   └── services/             # Business logic (copied from backend/services/)
-│   ├── slm/                      # Sound Level Meter Feature Module
-│   │   ├── models.py             # NEW: Placeholder for SLM models
-│   │   ├── database.py           # NEW: SLM-specific DB connection
-│   │   └── routers/              # SLM routers (copied from backend/routers/)
-│   └── api/                      # API Aggregation Layer (placeholder)
-│       ├── dashboard.py          # NEW: Future aggregation endpoints
-│       └── roster.py             # NEW: Future aggregation endpoints
-└── data/
-    └── seismo_fleet.db          # Still using shared DB (migration pending)
-```
-
-## What's Working
-
-✅ **Application starts successfully** on port 9999
-✅ **Health endpoint works**: `/health` returns Terra-View v1.0.0
-✅ **UI renders**: Main dashboard loads with proper templates
-✅ **API endpoints work**: `/api/status-snapshot` returns seismograph data
-✅ **Database access works**: Models properly connected
-✅ **Static files serve**: CSS, JS, icons all accessible
-
-## Critical Changes Made
-
-### 1. Fixed Import in models.py
-**File:** `app/seismo/models.py`
-**Change:** `from backend.database import Base` → `from app.seismo.database import Base`
-**Reason:** Avoid duplicate Base instances causing SQLAlchemy errors
-
-### 2. Created New Entry Point
-**File:** `app/main.py`
-**Features:**
-- Terra-View branding (title, version, health check)
-- Imports from new `app.*` structure
-- Registers all seismo and SLM routers
-- Middleware for environment context
-
-### 3. Created UI Routes Module
-**File:** `app/ui/routes.py`
-**Purpose:** Centralize all HTML page routes (device-agnostic)
-
-### 4. Created Module-Specific Databases
-**Files:** `app/seismo/database.py`, `app/slm/database.py`
-**Status:** Both currently point to shared `seismo_fleet.db` (migration pending)
-
-## Recent Updates (2026-01-09)
-
-✅ **ALL imports updated** - Changed all `backend.*` imports to `app.seismo.*` or `app.slm.*`
-✅ **Old structure deleted** - `backend/` and `templates/` directories removed
-✅ **Containers rebuilt** - All three containers (Terra-View, SFM, SLMM) working with new imports
-✅ **Verified working** - Tested health endpoints and UI after migration
-
-## What's NOT Yet Done
-
-❌ **Partial routes missing** - `/partials/*` endpoints not yet added
-❌ **Database not split** - Still using shared `seismo_fleet.db`
-
-## How to Run
-
-```bash
-# Start on custom port to avoid conflicts
-PORT=9999 python3 -m app.main
-
-# Test health endpoint
-curl http://localhost:9999/health
-
-# Test API endpoint
-curl http://localhost:9999/api/status-snapshot
-
-# Access UI
-open http://localhost:9999/
-```
-
-## Next Steps (Recommended Order)
-
-1. **Add partial routes** to app/main.py or create separate router
-2. **Test all endpoints thoroughly** - Verify roster CRUD, photos, settings
-3. **Split databases** (Phase 2 of plan)
-4. **Implement API aggregation layer** (Phase 3 of plan)
-
-## Known Issues
-
-None currently - app starts and serves requests successfully!
-
-## Testing Checklist
-
-- [x] App starts without errors
-- [x] Health endpoint returns correct version
-- [x] Main dashboard loads
-- [x] Status snapshot API works
-- [ ] All seismo endpoints work
-- [ ] All SLM endpoints work
-- [ ] Roster CRUD operations work
-- [ ] Photos upload/download works
-- [ ] Settings page works
-
-## Rollback Instructions
-
-~~The old structure has been deleted.~~ To rollback, restore from your backup:
-
-```bash
-# Restore from your backup
-# The old backend/ and templates/ directories were removed on 2026-01-09
-```
-
-## Important Notes
-
-- **MIGRATION COMPLETE**: Old `backend/` and `templates/` directories removed
-- **ALL IMPORTS UPDATED**: All Python files now use `app.*` imports
-- **NO DATA LOSS**: Database untouched, only code structure changed
-- **CONTAINERS WORKING**: All three containers (Terra-View, SFM, SLMM) healthy
-- **FULLY SELF-CONTAINED**: Application runs entirely from `app/` directory
-
----
-
-**Congratulations!** 🎉 Import migration complete! The modular monolith is now self-contained and production-ready.

PROJECTS_SYSTEM_IMPLEMENTATION.md

@@ -0,0 +1,546 @@
+# Projects System Implementation - Terra-View
+
+## Overview
+
+The Projects system has been successfully scaffolded in Terra-View. This document provides a complete overview of what has been built, how it works, and what needs to be completed.
+
+## ✅ Completed Components
+
+### 1. Database Schema
+
+**Location**: `/backend/models.py`
+
+Seven new tables have been added:
+
+- **ProjectType**: Template definitions for project types (Sound, Vibration, Combined)
+- **Project**: Top-level project organization with type reference
+- **MonitoringLocation**: Generic locations (NRLs for sound, monitoring points for vibration)
+- **UnitAssignment**: Links devices to locations
+- **ScheduledAction**: Automated recording control schedules
+- **RecordingSession**: Tracks actual recording/monitoring sessions
+- **DataFile**: File references for downloaded data
+
+**Key Features**:
+- Type-aware design (project_type_id determines features)
+- Flexible metadata fields (JSON columns for type-specific data)
+- Denormalized fields for efficient queries
+- Proper indexing on foreign keys
+
+### 2. Service Layer
+
+#### SLMM Client (`/backend/services/slmm_client.py`)
+- Clean wrapper for all SLMM API operations
+- Methods for: start/stop/pause/resume recording, get status, configure devices
+- Error handling with custom exceptions
+- Singleton pattern for easy access
+
+#### Device Controller (`/backend/services/device_controller.py`)
+- Routes commands to appropriate backend (SLMM for SLMs, SFM for seismographs)
+- Unified interface across device types
+- Ready for future SFM implementation
+
+#### Scheduler Service (`/backend/services/scheduler.py`)
+- Background task that checks for pending scheduled actions every 60 seconds
+- Executes actions by calling device controller
+- Creates/updates recording sessions
+- Tracks execution status and errors
+- Manual execution support for testing
+
+### 3. API Routers
+
+#### Projects Router (`/backend/routers/projects.py`)
+Endpoints:
+- `GET /api/projects/list` - Project list with stats
+- `GET /api/projects/stats` - Overview statistics
+- `POST /api/projects/create` - Create new project
+- `GET /api/projects/{id}` - Get project details
+- `PUT /api/projects/{id}` - Update project
+- `DELETE /api/projects/{id}` - Archive project
+- `GET /api/projects/{id}/dashboard` - Project dashboard data
+- `GET /api/projects/types/list` - Get project type templates
+
+#### Project Locations Router (`/backend/routers/project_locations.py`)
+Endpoints:
+- `GET /api/projects/{id}/locations` - List locations
+- `POST /api/projects/{id}/locations/create` - Create location
+- `PUT /api/projects/{id}/locations/{location_id}` - Update location
+- `DELETE /api/projects/{id}/locations/{location_id}` - Delete location
+- `GET /api/projects/{id}/assignments` - List unit assignments
+- `POST /api/projects/{id}/locations/{location_id}/assign` - Assign unit
+- `POST /api/projects/{id}/assignments/{assignment_id}/unassign` - Unassign unit
+- `GET /api/projects/{id}/available-units` - Get units available for assignment
+
+#### Scheduler Router (`/backend/routers/scheduler.py`)
+Endpoints:
+- `GET /api/projects/{id}/scheduler/actions` - List scheduled actions
+- `POST /api/projects/{id}/scheduler/actions/create` - Create action
+- `POST /api/projects/{id}/scheduler/schedule-session` - Schedule recording session
+- `PUT /api/projects/{id}/scheduler/actions/{action_id}` - Update action
+- `POST /api/projects/{id}/scheduler/actions/{action_id}/cancel` - Cancel action
+- `DELETE /api/projects/{id}/scheduler/actions/{action_id}` - Delete action
+- `POST /api/projects/{id}/scheduler/actions/{action_id}/execute` - Manual execution
+- `GET /api/projects/{id}/scheduler/status` - Scheduler status
+- `POST /api/projects/{id}/scheduler/execute-pending` - Trigger pending executions
+
+### 4. Frontend
+
+#### Main Page
+**Location**: `/templates/projects/overview.html`
+
+Features:
+- Summary statistics cards (projects, locations, assignments, sessions)
+- Tabbed interface (All, Active, Completed, Archived)
+- Project cards grid layout
+- Create project modal with two-step flow:
+  1. Select project type (Sound/Vibration/Combined)
+  2. Fill project details
+- HTMX-powered dynamic updates
+
+#### Navigation
+**Location**: `/templates/base.html` (updated)
+- "Projects" link added to sidebar
+- Active state highlighting
+
+### 5. Application Integration
+
+**Location**: `/backend/main.py`
+
+- Routers registered
+- Page route added (`/projects`)
+- Scheduler service starts on application startup
+- Scheduler stops on application shutdown
+
+### 6. Database Initialization
+
+**Script**: `/backend/init_projects_db.py`
+
+- Creates all project tables
+- Populates ProjectType with default templates
+- ✅ Successfully executed - database is ready
+
+---
+
+## 📁 File Organization
+
+```
+terra-view/
+├── backend/
+│   ├── models.py                              [✅ Updated]
+│   ├── init_projects_db.py                    [✅ Created]
+│   ├── main.py                                [✅ Updated]
+│   ├── routers/
+│   │   ├── projects.py                        [✅ Created]
+│   │   ├── project_locations.py               [✅ Created]
+│   │   └── scheduler.py                       [✅ Created]
+│   └── services/
+│       ├── slmm_client.py                     [✅ Created]
+│       ├── device_controller.py               [✅ Created]
+│       └── scheduler.py                       [✅ Created]
+├── templates/
+│   ├── base.html                              [✅ Updated]
+│   ├── projects/
+│   │   └── overview.html                      [✅ Created]
+│   └── partials/
+│       └── projects/                          [📁 Created, empty]
+└── data/
+    └── seismo_fleet.db                        [✅ Tables created]
+```
+
+---
+
+## 🔨 What Still Needs to be Built
+
+### 1. Frontend Templates (Partials)
+
+**Directory**: `/templates/partials/projects/`
+
+**Required Files**:
+
+#### `project_stats.html`
+Stats cards for overview page:
+- Total/Active/Completed projects
+- Total locations
+- Assigned units
+- Active sessions
+
+#### `project_list.html`
+Project cards grid:
+- Project name, type, status
+- Location count, unit count
+- Active session indicator
+- Link to project dashboard
+
+#### `project_dashboard.html`
+Main project dashboard panel with tabs:
+- Summary stats
+- Active locations and assignments
+- Upcoming scheduled actions
+- Recent sessions
+
+#### `location_list.html`
+Location cards/table:
+- Location name, type, coordinates
+- Assigned unit (if any)
+- Session count
+- Assign/unassign button
+
+#### `assignment_list.html`
+Unit assignment table:
+- Unit ID, device type
+- Location name
+- Assignment dates
+- Status
+- Unassign button
+
+#### `scheduler_agenda.html`
+Calendar/agenda view:
+- Scheduled actions sorted by time
+- Action type (start/stop/download)
+- Location and unit
+- Status indicator
+- Cancel/execute buttons
+
+### 2. Project Dashboard Page
+
+**Location**: `/templates/projects/project_dashboard.html`
+
+Full project detail page with:
+- Header with project name, type, status
+- Tab navigation (Dashboard, Scheduler, Locations, Units, Data, Settings)
+- Tab content areas
+- Modals for adding locations, scheduling sessions
+
+### 3. Additional UI Components
+
+- Project type selection cards (with icons)
+- Location creation modal
+- Unit assignment modal
+- Schedule session modal (with date/time picker)
+- Data file browser
+
+### 4. SLMM Enhancements
+
+**Location**: `/slmm/app/routers.py` (SLMM repo)
+
+New endpoint needed:
+```python
+POST /api/nl43/{unit_id}/ftp/download
+```
+
+This should:
+- Accept destination_path and files list
+- Connect to SLM via FTP
+- Download specified files
+- Save to Terra-View's `data/Projects/` directory
+- Return file list with metadata
+
+### 5. SFM Client (Future)
+
+**Location**: `/backend/services/sfm_client.py` (to be created)
+
+Similar to SLMM client, but for seismographs:
+- Get seismograph status
+- Start/stop recording
+- Download data files
+- Integrate with device controller
+
+---
+
+## 🚀 Testing the System
+
+### 1. Start Terra-View
+
+```bash
+cd /home/serversdown/tmi/terra-view
+# Start Terra-View (however you normally start it)
+```
+
+Verify in logs:
+```
+Starting scheduler service...
+Scheduler service started
+```
+
+### 2. Navigate to Projects
+
+Open browser: `http://localhost:8001/projects`
+
+You should see:
+- Summary stats cards (all zeros initially)
+- Tabs (All Projects, Active, Completed, Archived)
+- "New Project" button
+
+### 3. Create a Project
+
+1. Click "New Project"
+2. Select a project type (e.g., "Sound Monitoring")
+3. Fill in details:
+   - Name: "Test Sound Project"
+   - Client: "Test Client"
+   - Start Date: Today
+4. Submit
+
+### 4. Test API Endpoints
+
+```bash
+# Get project types
+curl http://localhost:8001/api/projects/types/list
+
+# Get projects list
+curl http://localhost:8001/api/projects/list
+
+# Get project stats
+curl http://localhost:8001/api/projects/stats
+```
+
+### 5. Test Scheduler Status
+
+```bash
+curl http://localhost:8001/api/projects/{project_id}/scheduler/status
+```
+
+---
+
+## 📋 Dataflow Examples
+
+### Creating and Scheduling a Recording Session
+
+1. **User creates project** → Project record in DB
+2. **User adds NRL** → MonitoringLocation record
+3. **User assigns SLM to NRL** → UnitAssignment record
+4. **User schedules recording** → 2 ScheduledAction records (start + stop)
+5. **Scheduler runs every minute** → Checks for pending actions
+6. **Start action time arrives** → Scheduler calls SLMM via device controller
+7. **SLMM sends TCP command to SLM** → Recording starts
+8. **RecordingSession created** → Tracks the session
+9. **Stop action time arrives** → Scheduler stops recording
+10. **Session updated** → stopped_at, duration_seconds filled
+11. **User triggers download** → Files copied to `data/Projects/{project_id}/sound/{nrl_name}/`
+12. **DataFile records created** → Track file references
+
+---
+
+## 🎨 UI Design Patterns
+
+### Established Patterns (from SLM dashboard):
+
+1. **Stats Cards**: 4-column grid, auto-refresh every 30s
+2. **Sidebar Lists**: Searchable, filterable, auto-refresh
+3. **Main Panel**: Large central area for details
+4. **Modals**: Centered, overlay background
+5. **HTMX**: All dynamic updates, minimal JavaScript
+6. **Tailwind**: Consistent styling with dark mode support
+
+### Color Scheme:
+
+- Primary: `seismo-orange` (#f48b1c)
+- Secondary: `seismo-navy` (#142a66)
+- Accent: `seismo-burgundy` (#7d234d)
+
+---
+
+## 🔧 Configuration
+
+### Environment Variables
+
+- `SLMM_BASE_URL`: SLMM backend URL (default: http://localhost:8100)
+- `ENVIRONMENT`: "development" or "production"
+
+### Scheduler Settings
+
+Located in `/backend/services/scheduler.py`:
+- `check_interval`: 60 seconds (adjust as needed)
+
+---
+
+## 📚 Next Steps
+
+### Immediate (Get Basic UI Working):
+1. Create partial templates (stats, lists)
+2. Test creating projects via UI
+3. Implement project dashboard page
+
+### Short-term (Core Features):
+4. Add location management UI
+5. Add unit assignment UI
+6. Add scheduler UI (agenda view)
+
+### Medium-term (Data Flow):
+7. Implement SLMM download endpoint
+8. Test full recording workflow
+9. Add file browser for downloaded data
+
+### Long-term (Complete System):
+10. Implement SFM client for seismographs
+11. Add data visualization
+12. Add project reporting
+13. Add user authentication
+
+---
+
+## 🐛 Known Issues / TODOs
+
+1. **Partial templates missing**: Need to create HTML templates for all partials
+2. **SLMM download endpoint**: Needs implementation in SLMM backend
+3. **Project dashboard page**: Not yet created
+4. **SFM integration**: Placeholder only, needs real implementation
+5. **File download tracking**: DataFile records not yet created after downloads
+6. **Error handling**: Need better user-facing error messages
+7. **Validation**: Form validation could be improved
+8. **Testing**: No automated tests yet
+
+---
+
+## 📖 API Documentation
+
+### Project Type Object
+```json
+{
+  "id": "sound_monitoring",
+  "name": "Sound Monitoring",
+  "description": "...",
+  "icon": "volume-2",
+  "supports_sound": true,
+  "supports_vibration": false
+}
+```
+
+### Project Object
+```json
+{
+  "id": "uuid",
+  "name": "Project Name",
+  "description": "...",
+  "project_type_id": "sound_monitoring",
+  "status": "active",
+  "client_name": "Client Inc",
+  "site_address": "123 Main St",
+  "site_coordinates": "40.7128,-74.0060",
+  "start_date": "2024-01-15",
+  "end_date": null,
+  "created_at": "2024-01-15T10:00:00",
+  "updated_at": "2024-01-15T10:00:00"
+}
+```
+
+### MonitoringLocation Object
+```json
+{
+  "id": "uuid",
+  "project_id": "uuid",
+  "location_type": "sound",
+  "name": "NRL-001",
+  "description": "...",
+  "coordinates": "40.7128,-74.0060",
+  "address": "123 Main St",
+  "location_metadata": "{...}",
+  "created_at": "2024-01-15T10:00:00"
+}
+```
+
+### UnitAssignment Object
+```json
+{
+  "id": "uuid",
+  "unit_id": "nl43-001",
+  "location_id": "uuid",
+  "project_id": "uuid",
+  "device_type": "sound_level_meter",
+  "assigned_at": "2024-01-15T10:00:00",
+  "assigned_until": null,
+  "status": "active",
+  "notes": "..."
+}
+```
+
+### ScheduledAction Object
+```json
+{
+  "id": "uuid",
+  "project_id": "uuid",
+  "location_id": "uuid",
+  "unit_id": "nl43-001",
+  "action_type": "start",
+  "device_type": "sound_level_meter",
+  "scheduled_time": "2024-01-16T08:00:00",
+  "executed_at": null,
+  "execution_status": "pending",
+  "module_response": null,
+  "error_message": null
+}
+```
+
+---
+
+## 🎓 Architecture Decisions
+
+### Why Project Types?
+Allows the system to scale to different monitoring scenarios (air quality, multi-hazard, etc.) without code changes. Just add a new ProjectType record and the UI adapts.
+
+### Why Generic MonitoringLocation?
+Instead of separate NRL and MonitoringPoint tables, one table with a `location_type` discriminator keeps the schema clean and allows for combined projects.
+
+### Why Denormalized Fields?
+Fields like `project_id` in UnitAssignment (already have via location) enable faster queries without joins.
+
+### Why Scheduler in Terra-View?
+Terra-View is the orchestration layer. SLMM only handles device communication. Keeping scheduling logic in Terra-View allows for complex workflows across multiple device types.
+
+### Why JSON Metadata Columns?
+Type-specific fields (like ambient_conditions for sound projects) don't apply to all location types. JSON columns provide flexibility without cluttering the schema.
+
+---
+
+## 💡 Tips for Continuing Development
+
+1. **Follow Existing Patterns**: Look at the SLM dashboard code for reference
+2. **Use HTMX Aggressively**: Minimize JavaScript, let HTMX handle updates
+3. **Keep Routers Thin**: Move business logic to service layer
+4. **Return HTML Partials**: Most endpoints should return HTML, not JSON
+5. **Test Incrementally**: Build one partial at a time and test in browser
+6. **Check Logs**: Scheduler logs execution attempts
+7. **Use Browser DevTools**: Network tab shows HTMX requests
+
+---
+
+## 📞 Support
+
+For questions or issues:
+1. Check this document first
+2. Review existing dashboards (SLM, Seismographs) for patterns
+3. Check logs for scheduler execution details
+4. Test API endpoints with curl to isolate issues
+
+---
+
+## ✅ Checklist for Completion
+
+- [x] Database schema designed
+- [x] Models created
+- [x] Migration script run successfully
+- [x] Service layer complete (SLMM client, device controller, scheduler)
+- [x] API routers created (projects, locations, scheduler)
+- [x] Navigation updated
+- [x] Main overview page created
+- [x] Routes registered in main.py
+- [x] Scheduler service integrated
+- [ ] Partial templates created
+- [ ] Project dashboard page created
+- [ ] Location management UI
+- [ ] Unit assignment UI
+- [ ] Scheduler UI (agenda view)
+- [ ] SLMM download endpoint implemented
+- [ ] Full workflow tested end-to-end
+- [ ] SFM client implemented (future)
+
+---
+
+**Last Updated**: 2026-01-12
+
+**Database Status**: ✅ Initialized
+
+**Backend Status**: ✅ Complete
+
+**Frontend Status**: 🟡 Partial (overview page only)
+
+**Ready for Testing**: ✅ Yes (basic functionality)

README.md

@@ -1,31 +1,5 @@
-# Terra-View v0.5.0
-Unified platform for managing seismograph fleets and sound level meter deployments. Built as a modular monolith with independent feature modules (Seismo, SLM) sharing a common UI layer. Track deployments, monitor health in real time, merge roster intent with incoming telemetry, and control your entire fleet through a unified database and dashboard.
-
-## Architecture
-
-Terra-View follows a **modular monolith** architecture with independent feature modules in a single codebase:
-
-- **app/seismo/** - Seismograph Fleet Module (SFM)
-  - Device roster and deployment tracking
-  - Series 3/4 telemetry ingestion
-  - Status monitoring (OK/Pending/Missing)
-  - Photo management and location tracking
-- **app/slm/** - Sound Level Meter Manager (SLMM)
-  - NL43 device configuration and control
-  - Real-time measurement monitoring
-  - TCP/FTP/Web interface support
-  - Dashboard statistics and unit management
-- **app/ui/** - Shared UI layer
-  - Templates, static assets, and common components
-  - Progressive Web App (PWA) support
-- **app/api/** - API aggregation layer
-  - Cross-module endpoints
-  - Future unified dashboard APIs
-
-**Multi-Container Deployment**: Three Docker containers built from the same codebase:
-- `terra-view` (port 8001) - Main UI with all modules integrated
-- `sfm` (port 8002) - Seismo API backend
-- `slmm` (port 8100) - SLM API backend
+# Seismo Fleet Manager v0.4.2
+Backend API and HTMX-powered web interface for managing a mixed fleet of seismographs and field modems. Track deployments, monitor health in real time, merge roster intent with incoming telemetry, and control your fleet through a unified database and dashboard.
 
 ## Features
 

app/api/dashboard.py

@@ -1,13 +0,0 @@
-"""
-API Aggregation Layer - Dashboard endpoints
-Composes data from multiple feature modules
-"""
-from fastapi import APIRouter
-
-router = APIRouter(prefix="/api/dashboard", tags=["dashboard-aggregation"])
-
-# TODO: Implement aggregation endpoints that combine data from
-# app.seismo and app.slm modules
-
-# For now, individual feature modules expose their own APIs directly
-# Future: Add cross-feature aggregation here

app/api/roster.py

@@ -1,13 +0,0 @@
-"""
-API Aggregation Layer - Roster endpoints
-Aggregates roster data from all feature modules
-"""
-from fastapi import APIRouter
-
-router = APIRouter(prefix="/api/roster-aggregation", tags=["roster-aggregation"])
-
-# TODO: Implement unified roster endpoints that combine data from
-# app.seismo and app.slm modules
-
-# For now, individual feature modules expose their own roster APIs
-# Future: Add cross-feature roster aggregation here

app/api/slmm_proxy.py

@@ -1,83 +0,0 @@
-"""
-SLMM API Proxy
-Forwards /api/slmm/* requests to the SLMM backend service
-"""
-import httpx
-import logging
-from fastapi import APIRouter, Request, Response, WebSocket
-from fastapi.responses import StreamingResponse
-from app.core.config import SLMM_API_URL
-
-logger = logging.getLogger(__name__)
-
-router = APIRouter(prefix="/api/slmm", tags=["slmm-proxy"])
-
-
-@router.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
-async def proxy_slmm_request(path: str, request: Request):
-    """Proxy HTTP requests to SLMM backend"""
-    # Build target URL - rewrite /api/slmm/* to /api/nl43/*
-    target_url = f"{SLMM_API_URL}/api/nl43/{path}"
-
-    # Get query params
-    query_string = str(request.url.query)
-    if query_string:
-        target_url += f"?{query_string}"
-
-    logger.info(f"Proxying {request.method} {target_url}")
-
-    # Read request body
-    body = await request.body()
-
-    # Forward headers (exclude host)
-    headers = {
-        key: value
-        for key, value in request.headers.items()
-        if key.lower() not in ['host', 'content-length']
-    }
-
-    async with httpx.AsyncClient(timeout=30.0) as client:
-        try:
-            # Make proxied request
-            response = await client.request(
-                method=request.method,
-                url=target_url,
-                content=body,
-                headers=headers
-            )
-
-            # Return response
-            return Response(
-                content=response.content,
-                status_code=response.status_code,
-                headers=dict(response.headers)
-            )
-        except httpx.RequestError as e:
-            logger.error(f"Proxy request failed: {e}")
-            return Response(
-                content=f'{{"detail": "SLMM backend unavailable: {str(e)}"}}',
-                status_code=502,
-                media_type="application/json"
-            )
-
-
-@router.websocket("/{unit_id}/live")
-async def proxy_slmm_websocket(websocket: WebSocket, unit_id: str):
-    """Proxy WebSocket connections to SLMM backend for live data streaming"""
-    await websocket.accept()
-
-    # Build WebSocket URL
-    ws_protocol = "ws" if "localhost" in SLMM_API_URL or "127.0.0.1" in SLMM_API_URL else "wss"
-    ws_url = SLMM_API_URL.replace("http://", f"{ws_protocol}://").replace("https://", f"{ws_protocol}://")
-    ws_target = f"{ws_url}/api/slmm/{unit_id}/live"
-
-    logger.info(f"Proxying WebSocket to {ws_target}")
-
-    async with httpx.AsyncClient() as client:
-        try:
-            async with client.stream("GET", ws_target) as response:
-                async for chunk in response.aiter_bytes():
-                    await websocket.send_bytes(chunk)
-        except Exception as e:
-            logger.error(f"WebSocket proxy error: {e}")
-            await websocket.close(code=1011, reason=f"Backend error: {str(e)}")

app/core/config.py

@@ -1,22 +0,0 @@
-"""
-Core configuration for Terra-View application
-"""
-import os
-
-# Application
-APP_NAME = "Terra-View"
-VERSION = "1.0.0"
-ENVIRONMENT = os.getenv("ENVIRONMENT", "production")
-
-# Ports
-PORT = int(os.getenv("PORT", 8001))
-
-# External Services
-# Terra-View is a unified application with seismograph logic built-in
-# The only external HTTP dependency is SLMM for NL-43 device communication
-SLMM_API_URL = os.getenv("SLMM_API_URL", "http://localhost:8100")
-
-# Database URLs (feature-specific)
-SEISMO_DATABASE_URL = "sqlite:///./data/seismo.db"
-SLM_DATABASE_URL = "sqlite:///./data/slm.db"
-MODEM_DATABASE_URL = "sqlite:///./data/modem.db"

app/main.py

@@ -1,216 +0,0 @@
-"""
-Terra-View - Unified monitoring platform for device fleets
-Modular monolith architecture with strict feature boundaries
-"""
-import os
-import logging
-from fastapi import FastAPI, Request
-from fastapi.middleware.cors import CORSMiddleware
-from fastapi.staticfiles import StaticFiles
-from fastapi.responses import JSONResponse
-from fastapi.exceptions import RequestValidationError
-
-# Configure logging
-logging.basicConfig(
-    level=logging.INFO,
-    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
-)
-logger = logging.getLogger(__name__)
-
-# Import configuration
-from app.core.config import APP_NAME, VERSION, ENVIRONMENT
-
-# Import UI routes
-from app.ui import routes as ui_routes
-
-# Import feature module routers (seismo)
-from app.seismo.routers import (
-    roster as seismo_roster,
-    units as seismo_units,
-    photos as seismo_photos,
-    roster_edit as seismo_roster_edit,
-    dashboard as seismo_dashboard,
-    dashboard_tabs as seismo_dashboard_tabs,
-    activity as seismo_activity,
-    seismo_dashboard as seismo_seismo_dashboard,
-    settings as seismo_settings,
-    partials as seismo_partials,
-)
-from app.seismo import routes as seismo_legacy_routes
-
-# Import feature module routers (SLM)
-from app.slm.routers import router as slm_router
-from app.slm.dashboard import router as slm_dashboard_router
-
-# Import API aggregation layer (placeholder for now)
-from app.api import dashboard as api_dashboard
-from app.api import roster as api_roster
-
-# Initialize database tables
-from app.seismo.database import engine as seismo_engine, Base as SeismoBase
-SeismoBase.metadata.create_all(bind=seismo_engine)
-
-from app.slm.database import engine as slm_engine, Base as SlmBase
-SlmBase.metadata.create_all(bind=slm_engine)
-
-# Initialize FastAPI app
-app = FastAPI(
-    title=APP_NAME,
-    description="Unified monitoring platform for seismograph, modem, and sound level meter fleets",
-    version=VERSION
-)
-
-# Add validation error handler to log details
-@app.exception_handler(RequestValidationError)
-async def validation_exception_handler(request: Request, exc: RequestValidationError):
-    logger.error(f"Validation error on {request.url}: {exc.errors()}")
-    logger.error(f"Body: {await request.body()}")
-    return JSONResponse(
-        status_code=400,
-        content={"detail": exc.errors()}
-    )
-
-# Configure CORS
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["*"],
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-# Mount static files
-app.mount("/static", StaticFiles(directory="app/ui/static"), name="static")
-
-# Middleware to add environment to request state
-@app.middleware("http")
-async def add_environment_to_context(request: Request, call_next):
-    """Middleware to add environment variable to request state"""
-    request.state.environment = ENVIRONMENT
-    response = await call_next(request)
-    return response
-
-# ===== INCLUDE ROUTERS =====
-
-# UI Layer (HTML pages)
-app.include_router(ui_routes.router)
-
-# Seismograph Feature Module APIs
-app.include_router(seismo_roster.router)
-app.include_router(seismo_units.router)
-app.include_router(seismo_photos.router)
-app.include_router(seismo_roster_edit.router)
-app.include_router(seismo_dashboard.router)
-app.include_router(seismo_dashboard_tabs.router)
-app.include_router(seismo_activity.router)
-app.include_router(seismo_seismo_dashboard.router)
-app.include_router(seismo_settings.router)
-app.include_router(seismo_partials.router, prefix="/partials")
-app.include_router(seismo_legacy_routes.router)
-
-# SLM Feature Module APIs
-app.include_router(slm_router)
-app.include_router(slm_dashboard_router)
-
-# SLMM Backend Proxy (forward /api/slmm/* to SLMM service)
-from app.api import slmm_proxy
-app.include_router(slmm_proxy.router)
-
-# API Aggregation Layer (future cross-feature endpoints)
-# app.include_router(api_dashboard.router)  # TODO: Implement aggregation
-# app.include_router(api_roster.router)     # TODO: Implement aggregation
-
-# ===== ADDITIONAL ROUTES FROM OLD MAIN.PY =====
-# These will need to be migrated to appropriate modules
-
-from fastapi.templating import Jinja2Templates
-from typing import List, Dict
-from pydantic import BaseModel
-from sqlalchemy.orm import Session
-from fastapi import Depends
-
-from app.seismo.database import get_db
-from app.seismo.services.snapshot import emit_status_snapshot
-from app.seismo.models import IgnoredUnit
-
-# TODO: Move these to appropriate feature modules or UI layer
-
-@app.post("/api/sync-edits")
-async def sync_edits(request: dict, db: Session = Depends(get_db)):
-    """Process offline edit queue and sync to database"""
-    # TODO: Move to seismo module
-    from app.seismo.models import RosterUnit
-
-    class EditItem(BaseModel):
-        id: int
-        unitId: str
-        changes: Dict
-        timestamp: int
-
-    class SyncEditsRequest(BaseModel):
-        edits: List[EditItem]
-
-    sync_request = SyncEditsRequest(**request)
-    results = []
-    synced_ids = []
-
-    for edit in sync_request.edits:
-        try:
-            unit = db.query(RosterUnit).filter_by(id=edit.unitId).first()
-
-            if not unit:
-                results.append({
-                    "id": edit.id,
-                    "status": "error",
-                    "reason": f"Unit {edit.unitId} not found"
-                })
-                continue
-
-            for key, value in edit.changes.items():
-                if hasattr(unit, key):
-                    if key in ['deployed', 'retired']:
-                        setattr(unit, key, value in ['true', True, 'True', '1', 1])
-                    else:
-                        setattr(unit, key, value if value != '' else None)
-
-            db.commit()
-
-            results.append({
-                "id": edit.id,
-                "status": "success"
-            })
-            synced_ids.append(edit.id)
-
-        except Exception as e:
-            db.rollback()
-            results.append({
-                "id": edit.id,
-                "status": "error",
-                "reason": str(e)
-            })
-
-    synced_count = len(synced_ids)
-
-    return JSONResponse({
-        "synced": synced_count,
-        "total": len(sync_request.edits),
-        "synced_ids": synced_ids,
-        "results": results
-    })
-
-
-@app.get("/health")
-def health_check():
-    """Health check endpoint"""
-    return {
-        "message": f"{APP_NAME} v{VERSION}",
-        "status": "running",
-        "version": VERSION,
-        "modules": ["seismo", "slm"]
-    }
-
-
-if __name__ == "__main__":
-    import uvicorn
-    from app.core.config import PORT
-    uvicorn.run(app, host="0.0.0.0", port=PORT)

app/seismo/database.py

@@ -1,36 +0,0 @@
-"""
-Seismograph feature module database connection
-"""
-from sqlalchemy import create_engine
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import sessionmaker
-import os
-
-# Ensure data directory exists
-os.makedirs("data", exist_ok=True)
-
-# For now, we'll use the old database (seismo_fleet.db) until we migrate
-# TODO: Migrate to seismo.db
-SQLALCHEMY_DATABASE_URL = "sqlite:///./data/seismo_fleet.db"
-
-engine = create_engine(
-    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
-)
-
-SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
-
-Base = declarative_base()
-
-
-def get_db():
-    """Dependency for database sessions"""
-    db = SessionLocal()
-    try:
-        yield db
-    finally:
-        db.close()
-
-
-def get_db_session():
-    """Get a database session directly (not as a dependency)"""
-    return SessionLocal()

app/seismo/models.py

@@ -1,110 +0,0 @@
-from sqlalchemy import Column, String, DateTime, Boolean, Text, Date, Integer
-from datetime import datetime
-from app.seismo.database import Base
-
-
-class Emitter(Base):
-    __tablename__ = "emitters"
-
-    id = Column(String, primary_key=True, index=True)
-    unit_type = Column(String, nullable=False)
-    last_seen = Column(DateTime, default=datetime.utcnow)
-    last_file = Column(String, nullable=False)
-    status = Column(String, nullable=False)
-    notes = Column(String, nullable=True)
-
-
-class RosterUnit(Base):
-    """
-    Roster table: represents our *intended assignment* of a unit.
-    This is editable from the GUI.
-
-    Supports multiple device types (seismograph, modem, sound_level_meter) with type-specific fields.
-    """
-    __tablename__ = "roster"
-
-    # Core fields (all device types)
-    id = Column(String, primary_key=True, index=True)
-    unit_type = Column(String, default="series3")  # Backward compatibility
-    device_type = Column(String, default="seismograph")  # "seismograph" | "modem" | "sound_level_meter"
-    deployed = Column(Boolean, default=True)
-    retired = Column(Boolean, default=False)
-    note = Column(String, nullable=True)
-    project_id = Column(String, nullable=True)
-    location = Column(String, nullable=True)  # Legacy field - use address/coordinates instead
-    address = Column(String, nullable=True)  # Human-readable address
-    coordinates = Column(String, nullable=True)  # Lat,Lon format: "34.0522,-118.2437"
-    last_updated = Column(DateTime, default=datetime.utcnow)
-
-    # Seismograph-specific fields (nullable for modems and SLMs)
-    last_calibrated = Column(Date, nullable=True)
-    next_calibration_due = Column(Date, nullable=True)
-
-    # Modem assignment (shared by seismographs and SLMs)
-    deployed_with_modem_id = Column(String, nullable=True)  # FK to another RosterUnit (device_type=modem)
-
-    # Modem-specific fields (nullable for seismographs and SLMs)
-    ip_address = Column(String, nullable=True)
-    phone_number = Column(String, nullable=True)
-    hardware_model = Column(String, nullable=True)
-
-    # Sound Level Meter-specific fields (nullable for seismographs and modems)
-    slm_host = Column(String, nullable=True)  # Device IP or hostname
-    slm_tcp_port = Column(Integer, nullable=True)  # TCP control port (default 2255)
-    slm_ftp_port = Column(Integer, nullable=True)  # FTP data retrieval port (default 21)
-    slm_model = Column(String, nullable=True)  # NL-43, NL-53, etc.
-    slm_serial_number = Column(String, nullable=True)  # Device serial number
-    slm_frequency_weighting = Column(String, nullable=True)  # A, C, Z
-    slm_time_weighting = Column(String, nullable=True)  # F (Fast), S (Slow), I (Impulse)
-    slm_measurement_range = Column(String, nullable=True)  # e.g., "30-130 dB"
-    slm_last_check = Column(DateTime, nullable=True)  # Last communication check
-
-
-class IgnoredUnit(Base):
-    """
-    Ignored units: units that report but should be filtered out from unknown emitters.
-    Used to suppress noise from old projects.
-    """
-    __tablename__ = "ignored_units"
-
-    id = Column(String, primary_key=True, index=True)
-    reason = Column(String, nullable=True)
-    ignored_at = Column(DateTime, default=datetime.utcnow)
-
-
-class UnitHistory(Base):
-    """
-    Unit history: complete timeline of changes to each unit.
-    Tracks note changes, status changes, deployment/benched events, and more.
-    """
-    __tablename__ = "unit_history"
-
-    id = Column(Integer, primary_key=True, autoincrement=True)
-    unit_id = Column(String, nullable=False, index=True)  # FK to RosterUnit.id
-    change_type = Column(String, nullable=False)  # note_change, deployed_change, retired_change, etc.
-    field_name = Column(String, nullable=True)  # Which field changed
-    old_value = Column(Text, nullable=True)  # Previous value
-    new_value = Column(Text, nullable=True)  # New value
-    changed_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
-    source = Column(String, default="manual")  # manual, csv_import, telemetry, offline_sync
-    notes = Column(Text, nullable=True)  # Optional reason/context for the change
-
-
-class UserPreferences(Base):
-    """
-    User preferences: persistent storage for application settings.
-    Single-row table (id=1) to store global user preferences.
-    """
-    __tablename__ = "user_preferences"
-
-    id = Column(Integer, primary_key=True, default=1)
-    timezone = Column(String, default="America/New_York")
-    theme = Column(String, default="auto")  # auto, light, dark
-    auto_refresh_interval = Column(Integer, default=10)  # seconds
-    date_format = Column(String, default="MM/DD/YYYY")
-    table_rows_per_page = Column(Integer, default=25)
-    calibration_interval_days = Column(Integer, default=365)
-    calibration_warning_days = Column(Integer, default=30)
-    status_ok_threshold_hours = Column(Integer, default=12)
-    status_pending_threshold_hours = Column(Integer, default=24)
-    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

app/seismo/routers/partials.py

@@ -1,140 +0,0 @@
-"""
-Partial routes for HTMX dynamic content loading.
-These routes return HTML fragments that are loaded into the page via HTMX.
-"""
-from fastapi import APIRouter, Request
-from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
-
-from app.seismo.services.snapshot import emit_status_snapshot
-
-router = APIRouter()
-templates = Jinja2Templates(directory="app/ui/templates")
-
-
-@router.get("/unknown-emitters", response_class=HTMLResponse)
-async def get_unknown_emitters(request: Request):
-    """
-    Returns HTML partial with unknown emitters (units reporting but not in roster).
-    Called periodically via HTMX (every 10s) from the roster page.
-    """
-    snapshot = emit_status_snapshot()
-
-    # Convert unknown units dict to list and add required fields
-    unknown_list = []
-    for unit_id, unit_data in snapshot.get("unknown", {}).items():
-        unknown_list.append({
-            "id": unit_id,
-            "status": unit_data["status"],
-            "age": unit_data["age"],
-            "fname": unit_data.get("fname", ""),
-        })
-
-    # Sort by ID for consistent display
-    unknown_list.sort(key=lambda x: x["id"])
-
-    return templates.TemplateResponse(
-        "partials/unknown_emitters.html",
-        {
-            "request": request,
-            "unknown_units": unknown_list
-        }
-    )
-
-
-@router.get("/devices-all", response_class=HTMLResponse)
-async def get_all_devices(request: Request):
-    """
-    Returns HTML partial with all devices (deployed, benched, retired, ignored).
-    Called on page load and when filters are applied.
-    """
-    snapshot = emit_status_snapshot()
-
-    # Combine all units from different buckets
-    all_units = []
-
-    # Add active units (deployed)
-    for unit_id, unit_data in snapshot.get("active", {}).items():
-        unit_info = {
-            "id": unit_id,
-            "status": unit_data["status"],
-            "age": unit_data["age"],
-            "last_seen": unit_data.get("last", ""),
-            "fname": unit_data.get("fname", ""),
-            "deployed": True,
-            "retired": False,
-            "ignored": False,
-            "note": unit_data.get("note", ""),
-            "device_type": unit_data.get("device_type", "seismograph"),
-            "location": unit_data.get("location", ""),
-            "address": unit_data.get("address", ""),
-            "coordinates": unit_data.get("coordinates", ""),
-            "last_calibrated": unit_data.get("last_calibrated"),
-            "next_calibration_due": unit_data.get("next_calibration_due"),
-            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
-            "ip_address": unit_data.get("ip_address"),
-            "phone_number": unit_data.get("phone_number"),
-            "hardware_model": unit_data.get("hardware_model"),
-        }
-        all_units.append(unit_info)
-
-    # Add benched units (not deployed, not retired)
-    for unit_id, unit_data in snapshot.get("benched", {}).items():
-        unit_info = {
-            "id": unit_id,
-            "status": unit_data["status"],
-            "age": unit_data["age"],
-            "last_seen": unit_data.get("last", ""),
-            "fname": unit_data.get("fname", ""),
-            "deployed": False,
-            "retired": False,
-            "ignored": False,
-            "note": unit_data.get("note", ""),
-            "device_type": unit_data.get("device_type", "seismograph"),
-            "location": unit_data.get("location", ""),
-            "address": unit_data.get("address", ""),
-            "coordinates": unit_data.get("coordinates", ""),
-            "last_calibrated": unit_data.get("last_calibrated"),
-            "next_calibration_due": unit_data.get("next_calibration_due"),
-            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
-            "ip_address": unit_data.get("ip_address"),
-            "phone_number": unit_data.get("phone_number"),
-            "hardware_model": unit_data.get("hardware_model"),
-        }
-        all_units.append(unit_info)
-
-    # Add retired units
-    for unit_id, unit_data in snapshot.get("retired", {}).items():
-        unit_info = {
-            "id": unit_id,
-            "status": "Retired",
-            "age": unit_data["age"],
-            "last_seen": unit_data.get("last", ""),
-            "fname": unit_data.get("fname", ""),
-            "deployed": False,
-            "retired": True,
-            "ignored": False,
-            "note": unit_data.get("note", ""),
-            "device_type": unit_data.get("device_type", "seismograph"),
-            "location": unit_data.get("location", ""),
-            "address": unit_data.get("address", ""),
-            "coordinates": unit_data.get("coordinates", ""),
-            "last_calibrated": unit_data.get("last_calibrated"),
-            "next_calibration_due": unit_data.get("next_calibration_due"),
-            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
-            "ip_address": unit_data.get("ip_address"),
-            "phone_number": unit_data.get("phone_number"),
-            "hardware_model": unit_data.get("hardware_model"),
-        }
-        all_units.append(unit_info)
-
-    # Sort by ID for consistent display
-    all_units.sort(key=lambda x: x["id"])
-
-    return templates.TemplateResponse(
-        "partials/devices_table.html",
-        {
-            "request": request,
-            "units": all_units
-        }
-    )

app/slm/__init__.py

@@ -1 +0,0 @@
-# SLMM addon package for NL43 integration.

app/slm/dashboard.py

@@ -1,317 +0,0 @@
-"""
-Dashboard API endpoints for SLM/NL43 devices.
-This layer aggregates and transforms data from the device API for UI consumption.
-"""
-from fastapi import APIRouter, Depends, HTTPException, Request
-from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
-from sqlalchemy.orm import Session
-from sqlalchemy import func
-from typing import List, Dict, Any
-import logging
-
-from app.slm.database import get_db as get_slm_db
-from app.slm.models import NL43Config, NL43Status
-from app.slm.services import NL43Client
-# Import seismo database for roster data
-from app.seismo.database import get_db as get_seismo_db
-from app.seismo.models import RosterUnit
-
-logger = logging.getLogger(__name__)
-
-router = APIRouter(prefix="/api/slm-dashboard", tags=["slm-dashboard"])
-templates = Jinja2Templates(directory="app/ui/templates")
-
-
-@router.get("/stats", response_class=HTMLResponse)
-async def get_dashboard_stats(request: Request, db: Session = Depends(get_seismo_db)):
-    """Get aggregate statistics for the SLM dashboard from roster (returns HTML)."""
-    # Query SLMs from the roster
-    slms = db.query(RosterUnit).filter_by(
-        device_type="sound_level_meter",
-        retired=False
-    ).all()
-
-    total_units = len(slms)
-    deployed = sum(1 for s in slms if s.deployed)
-    benched = sum(1 for s in slms if not s.deployed)
-
-    # For "active", count SLMs with recent check-ins (within last hour)
-    from datetime import datetime, timedelta, timezone
-    one_hour_ago = datetime.now(timezone.utc) - timedelta(hours=1)
-    active = sum(1 for s in slms if s.slm_last_check and s.slm_last_check >= one_hour_ago)
-
-    # Map to template variable names
-    # total_count, deployed_count, active_count, benched_count
-    return templates.TemplateResponse(
-        "partials/slm_stats.html",
-        {
-            "request": request,
-            "total_count": total_units,
-            "deployed_count": deployed,
-            "active_count": active,
-            "benched_count": benched
-        }
-    )
-
-
-@router.get("/units", response_class=HTMLResponse)
-async def get_units_list(request: Request, db: Session = Depends(get_seismo_db)):
-    """Get list of all SLM units from roster (returns HTML)."""
-    # Query SLMs from the roster (not retired)
-    slms = db.query(RosterUnit).filter_by(
-        device_type="sound_level_meter",
-        retired=False
-    ).order_by(RosterUnit.id).all()
-
-    units = []
-    for slm in slms:
-        # Map to template field names
-        unit_data = {
-            "id": slm.id,
-            "slm_host": slm.slm_host,
-            "slm_tcp_port": slm.slm_tcp_port,
-            "slm_last_check": slm.slm_last_check,
-            "slm_model": slm.slm_model or "NL-43",
-            "address": slm.address,
-            "deployed_with_modem_id": slm.deployed_with_modem_id,
-        }
-        units.append(unit_data)
-
-    return templates.TemplateResponse(
-        "partials/slm_unit_list.html",
-        {
-            "request": request,
-            "units": units
-        }
-    )
-
-
-@router.get("/live-view/{unit_id}", response_class=HTMLResponse)
-async def get_live_view(unit_id: str, request: Request, slm_db: Session = Depends(get_slm_db), roster_db: Session = Depends(get_seismo_db)):
-    """Get live measurement data for a specific unit (returns HTML)."""
-    # Get unit from roster
-    unit = roster_db.query(RosterUnit).filter_by(
-        id=unit_id,
-        device_type="sound_level_meter"
-    ).first()
-
-    if not unit:
-        return templates.TemplateResponse(
-            "partials/slm_live_view_error.html",
-            {
-                "request": request,
-                "error": f"Unit {unit_id} not found in roster"
-            }
-        )
-
-    # Get status from monitoring database (may not exist yet)
-    status = slm_db.query(NL43Status).filter_by(unit_id=unit_id).first()
-
-    # Get modem info if available
-    modem = None
-    modem_ip = None
-    if unit.deployed_with_modem_id:
-        modem = roster_db.query(RosterUnit).filter_by(
-            id=unit.deployed_with_modem_id,
-            device_type="modem"
-        ).first()
-        if modem:
-            modem_ip = modem.ip_address
-    elif unit.slm_host:
-        modem_ip = unit.slm_host
-
-    # Determine if measuring
-    is_measuring = False
-    if status and status.measurement_state:
-        is_measuring = status.measurement_state.lower() == 'start'
-
-    return templates.TemplateResponse(
-        "partials/slm_live_view.html",
-        {
-            "request": request,
-            "unit": unit,
-            "modem": modem,
-            "modem_ip": modem_ip,
-            "current_status": status,
-            "is_measuring": is_measuring
-        }
-    )
-
-
-@router.get("/config/{unit_id}", response_class=HTMLResponse)
-async def get_unit_config(unit_id: str, request: Request, roster_db: Session = Depends(get_seismo_db)):
-    """Return the HTML config form for a specific unit."""
-    unit = roster_db.query(RosterUnit).filter_by(
-        id=unit_id,
-        device_type="sound_level_meter"
-    ).first()
-
-    if not unit:
-        raise HTTPException(status_code=404, detail="Unit configuration not found")
-
-    return templates.TemplateResponse(
-        "partials/slm_config_form.html",
-        {
-            "request": request,
-            "unit": unit
-        }
-    )
-
-
-@router.post("/config/{unit_id}")
-async def update_unit_config(
-    unit_id: str,
-    request: Request,
-    roster_db: Session = Depends(get_seismo_db),
-    slm_db: Session = Depends(get_slm_db)
-):
-    """Update configuration for a specific unit from the form submission."""
-    unit = roster_db.query(RosterUnit).filter_by(
-        id=unit_id,
-        device_type="sound_level_meter"
-    ).first()
-
-    if not unit:
-        raise HTTPException(status_code=404, detail="Unit configuration not found")
-
-    form = await request.form()
-
-    def get_int(value, default=None):
-        try:
-            return int(value) if value not in (None, "") else default
-        except (TypeError, ValueError):
-            return default
-
-    # Update roster fields
-    unit.slm_model = form.get("slm_model") or unit.slm_model
-    unit.slm_serial_number = form.get("slm_serial_number") or unit.slm_serial_number
-    unit.slm_frequency_weighting = form.get("slm_frequency_weighting") or unit.slm_frequency_weighting
-    unit.slm_time_weighting = form.get("slm_time_weighting") or unit.slm_time_weighting
-    unit.slm_measurement_range = form.get("slm_measurement_range") or unit.slm_measurement_range
-
-    unit.slm_host = form.get("slm_host") or None
-    unit.slm_tcp_port = get_int(form.get("slm_tcp_port"), unit.slm_tcp_port or 2255)
-    unit.slm_ftp_port = get_int(form.get("slm_ftp_port"), unit.slm_ftp_port or 21)
-
-    deployed_with_modem_id = form.get("deployed_with_modem_id") or None
-    unit.deployed_with_modem_id = deployed_with_modem_id
-
-    roster_db.commit()
-    roster_db.refresh(unit)
-
-    # Update or create NL43 config so SLMM can reach the device
-    config = slm_db.query(NL43Config).filter_by(unit_id=unit_id).first()
-    if not config:
-        config = NL43Config(unit_id=unit_id)
-        slm_db.add(config)
-
-    # Resolve host from modem if present, otherwise fall back to direct IP or existing config
-    host_for_config = None
-    if deployed_with_modem_id:
-        modem = roster_db.query(RosterUnit).filter_by(
-            id=deployed_with_modem_id,
-            device_type="modem"
-        ).first()
-        if modem and modem.ip_address:
-            host_for_config = modem.ip_address
-    if not host_for_config:
-        host_for_config = unit.slm_host or config.host or "127.0.0.1"
-
-    config.host = host_for_config
-    config.tcp_port = get_int(form.get("slm_tcp_port"), config.tcp_port or 2255)
-    config.tcp_enabled = True
-    config.ftp_enabled = bool(config.ftp_username and config.ftp_password)
-
-    slm_db.commit()
-    slm_db.refresh(config)
-
-    return {"success": True, "unit_id": unit_id}
-
-
-@router.post("/control/{unit_id}/{action}")
-async def control_unit(unit_id: str, action: str, db: Session = Depends(get_slm_db)):
-    """Send control command to a unit (start, stop, pause, resume, etc.)."""
-    config = db.query(NL43Config).filter_by(unit_id=unit_id).first()
-    if not config:
-        raise HTTPException(status_code=404, detail="Unit configuration not found")
-
-    if not config.tcp_enabled:
-        raise HTTPException(status_code=400, detail="TCP control not enabled for this unit")
-
-    # Create NL43Client
-    client = NL43Client(
-        host=config.host,
-        port=config.tcp_port,
-        timeout=5.0,
-        ftp_username=config.ftp_username,
-        ftp_password=config.ftp_password
-    )
-
-    # Map action to command
-    action_map = {
-        "start": "start_measurement",
-        "stop": "stop_measurement",
-        "pause": "pause_measurement",
-        "resume": "resume_measurement",
-        "reset": "reset_measurement",
-        "sleep": "sleep_mode",
-        "wake": "wake_from_sleep",
-    }
-
-    if action not in action_map:
-        raise HTTPException(status_code=400, detail=f"Unknown action: {action}")
-
-    method_name = action_map[action]
-    method = getattr(client, method_name, None)
-
-    if not method:
-        raise HTTPException(status_code=500, detail=f"Method {method_name} not implemented")
-
-    try:
-        result = await method()
-        return {"success": True, "action": action, "result": result}
-    except Exception as e:
-        logger.error(f"Error executing {action} on {unit_id}: {e}")
-        raise HTTPException(status_code=500, detail=str(e))
-
-
-@router.get("/test-modem/{unit_id}")
-async def test_modem(unit_id: str, db: Session = Depends(get_slm_db)):
-    """Test connectivity to a unit's modem/device."""
-    config = db.query(NL43Config).filter_by(unit_id=unit_id).first()
-    if not config:
-        raise HTTPException(status_code=404, detail="Unit configuration not found")
-
-    if not config.tcp_enabled:
-        raise HTTPException(status_code=400, detail="TCP control not enabled for this unit")
-
-    client = NL43Client(
-        host=config.host,
-        port=config.tcp_port,
-        timeout=5.0,
-        ftp_username=config.ftp_username,
-        ftp_password=config.ftp_password
-    )
-
-    try:
-        # Try to get measurement state as a connectivity test
-        state = await client.get_measurement_state()
-        return {
-            "success": True,
-            "unit_id": unit_id,
-            "host": config.host,
-            "port": config.tcp_port,
-            "reachable": True,
-            "measurement_state": state
-        }
-    except Exception as e:
-        logger.warning(f"Modem test failed for {unit_id}: {e}")
-        return {
-            "success": False,
-            "unit_id": unit_id,
-            "host": config.host,
-            "port": config.tcp_port,
-            "reachable": False,
-            "error": str(e)
-        }

app/slm/database.py

@@ -1,27 +0,0 @@
-from sqlalchemy import create_engine
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import sessionmaker
-import os
-
-# Ensure data directory exists for the SLMM addon
-os.makedirs("data", exist_ok=True)
-
-SQLALCHEMY_DATABASE_URL = "sqlite:///./data/slmm.db"
-
-engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
-SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
-Base = declarative_base()
-
-
-def get_db():
-    """Dependency for database sessions."""
-    db = SessionLocal()
-    try:
-        yield db
-    finally:
-        db.close()
-
-
-def get_db_session():
-    """Get a database session directly (not as a dependency)."""
-    return SessionLocal()

app/slm/main.py

@@ -1,116 +0,0 @@
-import os
-import logging
-from fastapi import FastAPI, Request
-from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
-
-from app.slm.database import Base, engine
-from app.slm import routers
-
-# Configure logging
-logging.basicConfig(
-    level=logging.INFO,
-    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
-    handlers=[
-        logging.StreamHandler(),
-        logging.FileHandler("data/slmm.log"),
-    ],
-)
-logger = logging.getLogger(__name__)
-
-# Ensure database tables exist for the addon
-Base.metadata.create_all(bind=engine)
-logger.info("Database tables initialized")
-
-app = FastAPI(
-    title="SLMM NL43 Addon",
-    description="Standalone module for NL43 configuration and status APIs",
-    version="0.1.0",
-)
-
-# CORS configuration - use environment variable for allowed origins
-# Default to "*" for development, but should be restricted in production
-allowed_origins = os.getenv("CORS_ORIGINS", "*").split(",")
-logger.info(f"CORS allowed origins: {allowed_origins}")
-
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=allowed_origins,
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-templates = Jinja2Templates(directory="templates")
-
-app.include_router(routers.router)
-
-
-@app.get("/", response_class=HTMLResponse)
-def index(request: Request):
-    return templates.TemplateResponse("index.html", {"request": request})
-
-
-@app.get("/health")
-async def health():
-    """Basic health check endpoint."""
-    return {"status": "ok", "service": "slmm-nl43-addon"}
-
-
-@app.get("/health/devices")
-async def health_devices():
-    """Enhanced health check that tests device connectivity."""
-    from sqlalchemy.orm import Session
-    from app.slm.database import SessionLocal
-    from app.slm.services import NL43Client
-    from app.slm.models import NL43Config
-
-    db: Session = SessionLocal()
-    device_status = []
-
-    try:
-        configs = db.query(NL43Config).filter_by(tcp_enabled=True).all()
-
-        for cfg in configs:
-            client = NL43Client(cfg.host, cfg.tcp_port, timeout=2.0, ftp_username=cfg.ftp_username, ftp_password=cfg.ftp_password)
-            status = {
-                "unit_id": cfg.unit_id,
-                "host": cfg.host,
-                "port": cfg.tcp_port,
-                "reachable": False,
-                "error": None,
-            }
-
-            try:
-                # Try to connect (don't send command to avoid rate limiting issues)
-                import asyncio
-                reader, writer = await asyncio.wait_for(
-                    asyncio.open_connection(cfg.host, cfg.tcp_port), timeout=2.0
-                )
-                writer.close()
-                await writer.wait_closed()
-                status["reachable"] = True
-            except Exception as e:
-                status["error"] = str(type(e).__name__)
-                logger.warning(f"Device {cfg.unit_id} health check failed: {e}")
-
-            device_status.append(status)
-
-    finally:
-        db.close()
-
-    all_reachable = all(d["reachable"] for d in device_status) if device_status else True
-
-    return {
-        "status": "ok" if all_reachable else "degraded",
-        "devices": device_status,
-        "total_devices": len(device_status),
-        "reachable_devices": sum(1 for d in device_status if d["reachable"]),
-    }
-
-
-if __name__ == "__main__":
-    import uvicorn
-
-    uvicorn.run("app.main:app", host="0.0.0.0", port=int(os.getenv("PORT", "8100")), reload=True)

app/slm/models.py

@@ -1,43 +0,0 @@
-from sqlalchemy import Column, String, DateTime, Boolean, Integer, Text, func
-from app.slm.database import Base
-
-
-class NL43Config(Base):
-    """
-    NL43 connection/config metadata for the standalone SLMM addon.
-    """
-
-    __tablename__ = "nl43_config"
-
-    unit_id = Column(String, primary_key=True, index=True)
-    host = Column(String, default="127.0.0.1")
-    tcp_port = Column(Integer, default=80)  # NL43 TCP control port (via RX55)
-    tcp_enabled = Column(Boolean, default=True)
-    ftp_enabled = Column(Boolean, default=False)
-    ftp_username = Column(String, nullable=True)  # FTP login username
-    ftp_password = Column(String, nullable=True)  # FTP login password
-    web_enabled = Column(Boolean, default=False)
-
-
-class NL43Status(Base):
-    """
-    Latest NL43 status snapshot for quick dashboard/API access.
-    """
-
-    __tablename__ = "nl43_status"
-
-    unit_id = Column(String, primary_key=True, index=True)
-    last_seen = Column(DateTime, default=func.now())
-    measurement_state = Column(String, default="unknown")  # Measure/Stop
-    measurement_start_time = Column(DateTime, nullable=True)  # When measurement started (UTC)
-    counter = Column(String, nullable=True)  # d0: Measurement interval counter (1-600)
-    lp = Column(String, nullable=True)    # Instantaneous sound pressure level
-    leq = Column(String, nullable=True)   # Equivalent continuous sound level
-    lmax = Column(String, nullable=True)  # Maximum level
-    lmin = Column(String, nullable=True)  # Minimum level
-    lpeak = Column(String, nullable=True)  # Peak level
-    battery_level = Column(String, nullable=True)
-    power_source = Column(String, nullable=True)
-    sd_remaining_mb = Column(String, nullable=True)
-    sd_free_ratio = Column(String, nullable=True)
-    raw_payload = Column(Text, nullable=True)

app/slm/services.py

@@ -1,828 +0,0 @@
-"""
-NL43 TCP connector and snapshot persistence.
-
-Implements simple per-request TCP calls to avoid long-lived socket complexity.
-Extend to pooled connections/DRD streaming later.
-"""
-
-import asyncio
-import contextlib
-import logging
-import time
-from dataclasses import dataclass
-from datetime import datetime
-from typing import Optional, List
-from sqlalchemy.orm import Session
-from ftplib import FTP
-from pathlib import Path
-
-from app.slm.models import NL43Status
-
-logger = logging.getLogger(__name__)
-
-
-@dataclass
-class NL43Snapshot:
-    unit_id: str
-    measurement_state: str = "unknown"
-    counter: Optional[str] = None  # d0: Measurement interval counter (1-600)
-    lp: Optional[str] = None    # Instantaneous sound pressure level
-    leq: Optional[str] = None   # Equivalent continuous sound level
-    lmax: Optional[str] = None  # Maximum level
-    lmin: Optional[str] = None  # Minimum level
-    lpeak: Optional[str] = None  # Peak level
-    battery_level: Optional[str] = None
-    power_source: Optional[str] = None
-    sd_remaining_mb: Optional[str] = None
-    sd_free_ratio: Optional[str] = None
-    raw_payload: Optional[str] = None
-
-
-def persist_snapshot(s: NL43Snapshot, db: Session):
-    """Persist the latest snapshot for API/dashboard use."""
-    try:
-        row = db.query(NL43Status).filter_by(unit_id=s.unit_id).first()
-        if not row:
-            row = NL43Status(unit_id=s.unit_id)
-            db.add(row)
-
-        row.last_seen = datetime.utcnow()
-
-        # Track measurement start time by detecting state transition
-        previous_state = row.measurement_state
-        new_state = s.measurement_state
-
-        logger.info(f"State transition check for {s.unit_id}: '{previous_state}' -> '{new_state}'")
-
-        # Device returns "Start" when measuring, "Stop" when stopped
-        # Normalize to previous behavior for backward compatibility
-        is_measuring = new_state == "Start"
-        was_measuring = previous_state == "Start"
-
-        if not was_measuring and is_measuring:
-            # Measurement just started - record the start time
-            row.measurement_start_time = datetime.utcnow()
-            logger.info(f"✓ Measurement started on {s.unit_id} at {row.measurement_start_time}")
-        elif was_measuring and not is_measuring:
-            # Measurement stopped - clear the start time
-            row.measurement_start_time = None
-            logger.info(f"✓ Measurement stopped on {s.unit_id}")
-
-        row.measurement_state = new_state
-        row.counter = s.counter
-        row.lp = s.lp
-        row.leq = s.leq
-        row.lmax = s.lmax
-        row.lmin = s.lmin
-        row.lpeak = s.lpeak
-        row.battery_level = s.battery_level
-        row.power_source = s.power_source
-        row.sd_remaining_mb = s.sd_remaining_mb
-        row.sd_free_ratio = s.sd_free_ratio
-        row.raw_payload = s.raw_payload
-
-        db.commit()
-    except Exception as e:
-        db.rollback()
-        logger.error(f"Failed to persist snapshot for unit {s.unit_id}: {e}")
-        raise
-
-
-# Rate limiting: NL43 requires ≥1 second between commands
-_last_command_time = {}
-_rate_limit_lock = asyncio.Lock()
-
-
-class NL43Client:
-    def __init__(self, host: str, port: int, timeout: float = 5.0, ftp_username: str = None, ftp_password: str = None):
-        self.host = host
-        self.port = port
-        self.timeout = timeout
-        self.ftp_username = ftp_username or "anonymous"
-        self.ftp_password = ftp_password or ""
-        self.device_key = f"{host}:{port}"
-
-    async def _enforce_rate_limit(self):
-        """Ensure ≥1 second between commands to the same device."""
-        async with _rate_limit_lock:
-            last_time = _last_command_time.get(self.device_key, 0)
-            elapsed = time.time() - last_time
-            if elapsed < 1.0:
-                wait_time = 1.0 - elapsed
-                logger.debug(f"Rate limiting: waiting {wait_time:.2f}s for {self.device_key}")
-                await asyncio.sleep(wait_time)
-            _last_command_time[self.device_key] = time.time()
-
-    async def _send_command(self, cmd: str) -> str:
-        """Send ASCII command to NL43 device via TCP.
-
-        NL43 protocol returns two lines for query commands:
-        Line 1: Result code (R+0000 for success, error codes otherwise)
-        Line 2: Actual data (for query commands ending with '?')
-        """
-        await self._enforce_rate_limit()
-
-        logger.info(f"Sending command to {self.device_key}: {cmd.strip()}")
-
-        try:
-            reader, writer = await asyncio.wait_for(
-                asyncio.open_connection(self.host, self.port), timeout=self.timeout
-            )
-        except asyncio.TimeoutError:
-            logger.error(f"Connection timeout to {self.device_key}")
-            raise ConnectionError(f"Failed to connect to device at {self.host}:{self.port}")
-        except Exception as e:
-            logger.error(f"Connection failed to {self.device_key}: {e}")
-            raise ConnectionError(f"Failed to connect to device: {str(e)}")
-
-        try:
-            writer.write(cmd.encode("ascii"))
-            await writer.drain()
-
-            # Read first line (result code)
-            first_line_data = await asyncio.wait_for(reader.readuntil(b"\n"), timeout=self.timeout)
-            result_code = first_line_data.decode(errors="ignore").strip()
-
-            # Remove leading $ prompt if present
-            if result_code.startswith("$"):
-                result_code = result_code[1:].strip()
-
-            logger.info(f"Result code from {self.device_key}: {result_code}")
-
-            # Check result code
-            if result_code == "R+0000":
-                # Success - for query commands, read the second line with actual data
-                is_query = cmd.strip().endswith("?")
-                if is_query:
-                    data_line = await asyncio.wait_for(reader.readuntil(b"\n"), timeout=self.timeout)
-                    response = data_line.decode(errors="ignore").strip()
-                    logger.debug(f"Data line from {self.device_key}: {response}")
-                    return response
-                else:
-                    # Setting command - return success code
-                    return result_code
-            elif result_code == "R+0001":
-                raise ValueError("Command error - device did not recognize command")
-            elif result_code == "R+0002":
-                raise ValueError("Parameter error - invalid parameter value")
-            elif result_code == "R+0003":
-                raise ValueError("Spec/type error - command not supported by this device model")
-            elif result_code == "R+0004":
-                raise ValueError("Status error - device is in wrong state for this command")
-            else:
-                raise ValueError(f"Unknown result code: {result_code}")
-
-        except asyncio.TimeoutError:
-            logger.error(f"Response timeout from {self.device_key}")
-            raise TimeoutError(f"Device did not respond within {self.timeout}s")
-        except Exception as e:
-            logger.error(f"Communication error with {self.device_key}: {e}")
-            raise
-        finally:
-            writer.close()
-            with contextlib.suppress(Exception):
-                await writer.wait_closed()
-
-    async def request_dod(self) -> NL43Snapshot:
-        """Request DOD (Data Output Display) snapshot from device.
-
-        Returns parsed measurement data from the device display.
-        """
-        # _send_command now handles result code validation and returns the data line
-        resp = await self._send_command("DOD?\r\n")
-
-        # Validate response format
-        if not resp:
-            logger.warning(f"Empty data response from DOD command on {self.device_key}")
-            raise ValueError("Device returned empty data for DOD? command")
-
-        # Remove leading $ prompt if present (shouldn't be there after _send_command, but be safe)
-        if resp.startswith("$"):
-            resp = resp[1:].strip()
-
-        parts = [p.strip() for p in resp.split(",") if p.strip() != ""]
-
-        # DOD should return at least some data points
-        if len(parts) < 2:
-            logger.error(f"Malformed DOD data from {self.device_key}: {resp}")
-            raise ValueError(f"Malformed DOD data: expected comma-separated values, got: {resp}")
-
-        logger.info(f"Parsed {len(parts)} data points from DOD response")
-
-        # Query actual measurement state (DOD doesn't include this information)
-        try:
-            measurement_state = await self.get_measurement_state()
-        except Exception as e:
-            logger.warning(f"Failed to get measurement state, defaulting to 'Measure': {e}")
-            measurement_state = "Measure"
-
-        snap = NL43Snapshot(unit_id="", raw_payload=resp, measurement_state=measurement_state)
-
-        # Parse known positions (based on NL43 communication guide - DRD format)
-        # DRD format: d0=counter, d1=Lp, d2=Leq, d3=Lmax, d4=Lmin, d5=Lpeak, d6=LIeq, ...
-        try:
-            # Capture d0 (counter) for timer synchronization
-            if len(parts) >= 1:
-                snap.counter = parts[0]  # d0: Measurement interval counter (1-600)
-            if len(parts) >= 2:
-                snap.lp = parts[1]     # d1: Instantaneous sound pressure level
-            if len(parts) >= 3:
-                snap.leq = parts[2]    # d2: Equivalent continuous sound level
-            if len(parts) >= 4:
-                snap.lmax = parts[3]   # d3: Maximum level
-            if len(parts) >= 5:
-                snap.lmin = parts[4]   # d4: Minimum level
-            if len(parts) >= 6:
-                snap.lpeak = parts[5]  # d5: Peak level
-        except (IndexError, ValueError) as e:
-            logger.warning(f"Error parsing DOD data points: {e}")
-
-        return snap
-
-    async def start(self):
-        """Start measurement on the device.
-
-        According to NL43 protocol: Measure,Start (no $ prefix, capitalized param)
-        """
-        await self._send_command("Measure,Start\r\n")
-
-    async def stop(self):
-        """Stop measurement on the device.
-
-        According to NL43 protocol: Measure,Stop (no $ prefix, capitalized param)
-        """
-        await self._send_command("Measure,Stop\r\n")
-
-    async def set_store_mode_manual(self):
-        """Set the device to Manual Store mode.
-
-        According to NL43 protocol: Store Mode,Manual sets manual storage mode
-        """
-        await self._send_command("Store Mode,Manual\r\n")
-        logger.info(f"Store mode set to Manual on {self.device_key}")
-
-    async def manual_store(self):
-        """Manually store the current measurement data.
-
-        According to NL43 protocol: Manual Store,Start executes storing
-        Parameter p1="Start" executes the storage operation
-        Device must be in Manual Store mode first
-        """
-        await self._send_command("Manual Store,Start\r\n")
-        logger.info(f"Manual store executed on {self.device_key}")
-
-    async def pause(self):
-        """Pause the current measurement."""
-        await self._send_command("Pause,On\r\n")
-        logger.info(f"Measurement paused on {self.device_key}")
-
-    async def resume(self):
-        """Resume a paused measurement."""
-        await self._send_command("Pause,Off\r\n")
-        logger.info(f"Measurement resumed on {self.device_key}")
-
-    async def reset(self):
-        """Reset the measurement data."""
-        await self._send_command("Reset\r\n")
-        logger.info(f"Measurement data reset on {self.device_key}")
-
-    async def get_measurement_state(self) -> str:
-        """Get the current measurement state.
-
-        Returns: "Start" if measuring, "Stop" if stopped
-        """
-        resp = await self._send_command("Measure?\r\n")
-        state = resp.strip()
-        logger.info(f"Measurement state on {self.device_key}: {state}")
-        return state
-
-    async def get_battery_level(self) -> str:
-        """Get the battery level."""
-        resp = await self._send_command("Battery Level?\r\n")
-        logger.info(f"Battery level on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def get_clock(self) -> str:
-        """Get the device clock time."""
-        resp = await self._send_command("Clock?\r\n")
-        logger.info(f"Clock on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def set_clock(self, datetime_str: str):
-        """Set the device clock time.
-
-        Args:
-            datetime_str: Time in format YYYY/MM/DD,HH:MM:SS or YYYY/MM/DD HH:MM:SS
-        """
-        # Device expects format: Clock,YYYY/MM/DD HH:MM:SS (space between date and time)
-        # Replace comma with space if present to normalize format
-        normalized = datetime_str.replace(',', ' ', 1)
-        await self._send_command(f"Clock,{normalized}\r\n")
-        logger.info(f"Clock set on {self.device_key} to {normalized}")
-
-    async def get_frequency_weighting(self, channel: str = "Main") -> str:
-        """Get frequency weighting (A, C, Z, etc.).
-
-        Args:
-            channel: Main, Sub1, Sub2, or Sub3
-        """
-        resp = await self._send_command(f"Frequency Weighting ({channel})?\r\n")
-        logger.info(f"Frequency weighting ({channel}) on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def set_frequency_weighting(self, weighting: str, channel: str = "Main"):
-        """Set frequency weighting.
-
-        Args:
-            weighting: A, C, or Z
-            channel: Main, Sub1, Sub2, or Sub3
-        """
-        await self._send_command(f"Frequency Weighting ({channel}),{weighting}\r\n")
-        logger.info(f"Frequency weighting ({channel}) set to {weighting} on {self.device_key}")
-
-    async def get_time_weighting(self, channel: str = "Main") -> str:
-        """Get time weighting (F, S, I).
-
-        Args:
-            channel: Main, Sub1, Sub2, or Sub3
-        """
-        resp = await self._send_command(f"Time Weighting ({channel})?\r\n")
-        logger.info(f"Time weighting ({channel}) on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def set_time_weighting(self, weighting: str, channel: str = "Main"):
-        """Set time weighting.
-
-        Args:
-            weighting: F (Fast), S (Slow), or I (Impulse)
-            channel: Main, Sub1, Sub2, or Sub3
-        """
-        await self._send_command(f"Time Weighting ({channel}),{weighting}\r\n")
-        logger.info(f"Time weighting ({channel}) set to {weighting} on {self.device_key}")
-
-    async def request_dlc(self) -> dict:
-        """Request DLC (Data Last Calculation) - final stored measurement results.
-
-        This retrieves the complete calculation results from the last/current measurement,
-        including all statistical data. Similar to DOD but for final results.
-
-        Returns:
-            Dict with parsed DLC data
-        """
-        resp = await self._send_command("DLC?\r\n")
-        logger.info(f"DLC data received from {self.device_key}: {resp[:100]}...")
-
-        # Parse DLC response - similar format to DOD
-        # The exact format depends on device configuration
-        # For now, return raw data - can be enhanced based on actual response format
-        return {
-            "raw_data": resp.strip(),
-            "device_key": self.device_key,
-        }
-
-    async def sleep(self):
-        """Put the device into sleep mode to conserve battery.
-
-        Sleep mode is useful for battery conservation between scheduled measurements.
-        Device can be woken up remotely via TCP command or by pressing a button.
-        """
-        await self._send_command("Sleep Mode,On\r\n")
-        logger.info(f"Device {self.device_key} entering sleep mode")
-
-    async def wake(self):
-        """Wake the device from sleep mode.
-
-        Note: This may not work if the device is in deep sleep.
-        Physical button press might be required in some cases.
-        """
-        await self._send_command("Sleep Mode,Off\r\n")
-        logger.info(f"Device {self.device_key} waking from sleep mode")
-
-    async def get_sleep_status(self) -> str:
-        """Get the current sleep mode status."""
-        resp = await self._send_command("Sleep Mode?\r\n")
-        logger.info(f"Sleep mode status on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def stream_drd(self, callback):
-        """Stream continuous DRD output from the device.
-
-        Opens a persistent connection and streams DRD data lines.
-        Calls the provided callback function with each parsed snapshot.
-
-        Args:
-            callback: Async function that receives NL43Snapshot objects
-
-        The stream continues until an exception occurs or the connection is closed.
-        Send SUB character (0x1A) to stop the stream.
-        """
-        await self._enforce_rate_limit()
-
-        logger.info(f"Starting DRD stream for {self.device_key}")
-
-        try:
-            reader, writer = await asyncio.wait_for(
-                asyncio.open_connection(self.host, self.port), timeout=self.timeout
-            )
-        except asyncio.TimeoutError:
-            logger.error(f"DRD stream connection timeout to {self.device_key}")
-            raise ConnectionError(f"Failed to connect to device at {self.host}:{self.port}")
-        except Exception as e:
-            logger.error(f"DRD stream connection failed to {self.device_key}: {e}")
-            raise ConnectionError(f"Failed to connect to device: {str(e)}")
-
-        try:
-            # Start DRD streaming
-            writer.write(b"DRD?\r\n")
-            await writer.drain()
-
-            # Read initial result code
-            first_line_data = await asyncio.wait_for(reader.readuntil(b"\n"), timeout=self.timeout)
-            result_code = first_line_data.decode(errors="ignore").strip()
-
-            if result_code.startswith("$"):
-                result_code = result_code[1:].strip()
-
-            logger.debug(f"DRD stream result code from {self.device_key}: {result_code}")
-
-            if result_code != "R+0000":
-                raise ValueError(f"DRD stream failed to start: {result_code}")
-
-            logger.info(f"DRD stream started successfully for {self.device_key}")
-
-            # Continuously read data lines
-            while True:
-                try:
-                    line_data = await asyncio.wait_for(reader.readuntil(b"\n"), timeout=30.0)
-                    line = line_data.decode(errors="ignore").strip()
-
-                    if not line:
-                        continue
-
-                    # Remove leading $ if present
-                    if line.startswith("$"):
-                        line = line[1:].strip()
-
-                    # Parse the DRD data (same format as DOD)
-                    parts = [p.strip() for p in line.split(",") if p.strip() != ""]
-
-                    if len(parts) < 2:
-                        logger.warning(f"Malformed DRD data from {self.device_key}: {line}")
-                        continue
-
-                    snap = NL43Snapshot(unit_id="", raw_payload=line, measurement_state="Measure")
-
-                    # Parse known positions (DRD format - same as DOD)
-                    # DRD format: d0=counter, d1=Lp, d2=Leq, d3=Lmax, d4=Lmin, d5=Lpeak, d6=LIeq, ...
-                    try:
-                        # Capture d0 (counter) for timer synchronization
-                        if len(parts) >= 1:
-                            snap.counter = parts[0]  # d0: Measurement interval counter (1-600)
-                        if len(parts) >= 2:
-                            snap.lp = parts[1]     # d1: Instantaneous sound pressure level
-                        if len(parts) >= 3:
-                            snap.leq = parts[2]    # d2: Equivalent continuous sound level
-                        if len(parts) >= 4:
-                            snap.lmax = parts[3]   # d3: Maximum level
-                        if len(parts) >= 5:
-                            snap.lmin = parts[4]   # d4: Minimum level
-                        if len(parts) >= 6:
-                            snap.lpeak = parts[5]  # d5: Peak level
-                    except (IndexError, ValueError) as e:
-                        logger.warning(f"Error parsing DRD data points: {e}")
-
-                    # Call the callback with the snapshot
-                    await callback(snap)
-
-                except asyncio.TimeoutError:
-                    logger.warning(f"DRD stream timeout (no data for 30s) from {self.device_key}")
-                    break
-                except asyncio.IncompleteReadError:
-                    logger.info(f"DRD stream closed by device {self.device_key}")
-                    break
-
-        finally:
-            # Send SUB character to stop streaming
-            try:
-                writer.write(b"\x1A")
-                await writer.drain()
-            except Exception:
-                pass
-
-            writer.close()
-            with contextlib.suppress(Exception):
-                await writer.wait_closed()
-
-            logger.info(f"DRD stream ended for {self.device_key}")
-
-    async def set_measurement_time(self, preset: str):
-        """Set measurement time preset.
-
-        Args:
-            preset: Time preset (10s, 1m, 5m, 10m, 15m, 30m, 1h, 8h, 24h, or custom like "00:05:30")
-        """
-        await self._send_command(f"Measurement Time Preset Manual,{preset}\r\n")
-        logger.info(f"Set measurement time to {preset} on {self.device_key}")
-
-    async def get_measurement_time(self) -> str:
-        """Get current measurement time preset.
-
-        Returns: Current time preset setting
-        """
-        resp = await self._send_command("Measurement Time Preset Manual?\r\n")
-        return resp.strip()
-
-    async def set_leq_interval(self, preset: str):
-        """Set Leq calculation interval preset.
-
-        Args:
-            preset: Interval preset (Off, 10s, 1m, 5m, 10m, 15m, 30m, 1h, 8h, 24h, or custom like "00:05:30")
-        """
-        await self._send_command(f"Leq Calculation Interval Preset,{preset}\r\n")
-        logger.info(f"Set Leq interval to {preset} on {self.device_key}")
-
-    async def get_leq_interval(self) -> str:
-        """Get current Leq calculation interval preset.
-
-        Returns: Current interval preset setting
-        """
-        resp = await self._send_command("Leq Calculation Interval Preset?\r\n")
-        return resp.strip()
-
-    async def set_lp_interval(self, preset: str):
-        """Set Lp store interval.
-
-        Args:
-            preset: Store interval (Off, 10ms, 25ms, 100ms, 200ms, 1s)
-        """
-        await self._send_command(f"Lp Store Interval,{preset}\r\n")
-        logger.info(f"Set Lp interval to {preset} on {self.device_key}")
-
-    async def get_lp_interval(self) -> str:
-        """Get current Lp store interval.
-
-        Returns: Current store interval setting
-        """
-        resp = await self._send_command("Lp Store Interval?\r\n")
-        return resp.strip()
-
-    async def set_index_number(self, index: int):
-        """Set index number for file numbering (Store Name).
-
-        Args:
-            index: Index number (0000-9999)
-        """
-        if not 0 <= index <= 9999:
-            raise ValueError("Index must be between 0000 and 9999")
-        await self._send_command(f"Store Name,{index:04d}\r\n")
-        logger.info(f"Set store name (index) to {index:04d} on {self.device_key}")
-
-    async def get_index_number(self) -> str:
-        """Get current index number (Store Name).
-
-        Returns: Current index number
-        """
-        resp = await self._send_command("Store Name?\r\n")
-        return resp.strip()
-
-    async def get_overwrite_status(self) -> str:
-        """Check if saved data exists at current store target.
-
-        This command checks whether saved data exists in the set store target
-        (store mode / store name / store address). Use this before storing
-        to prevent accidentally overwriting data.
-
-        Returns:
-            "None" - No data exists (safe to store)
-            "Exist" - Data exists (would overwrite)
-        """
-        resp = await self._send_command("Overwrite?\r\n")
-        return resp.strip()
-
-    async def get_all_settings(self) -> dict:
-        """Query all device settings for verification.
-
-        Returns: Dictionary with all current device settings
-        """
-        settings = {}
-
-        # Measurement settings
-        try:
-            settings["measurement_state"] = await self.get_measurement_state()
-        except Exception as e:
-            settings["measurement_state"] = f"Error: {e}"
-
-        try:
-            settings["frequency_weighting"] = await self.get_frequency_weighting()
-        except Exception as e:
-            settings["frequency_weighting"] = f"Error: {e}"
-
-        try:
-            settings["time_weighting"] = await self.get_time_weighting()
-        except Exception as e:
-            settings["time_weighting"] = f"Error: {e}"
-
-        # Timing/interval settings
-        try:
-            settings["measurement_time"] = await self.get_measurement_time()
-        except Exception as e:
-            settings["measurement_time"] = f"Error: {e}"
-
-        try:
-            settings["leq_interval"] = await self.get_leq_interval()
-        except Exception as e:
-            settings["leq_interval"] = f"Error: {e}"
-
-        try:
-            settings["lp_interval"] = await self.get_lp_interval()
-        except Exception as e:
-            settings["lp_interval"] = f"Error: {e}"
-
-        try:
-            settings["index_number"] = await self.get_index_number()
-        except Exception as e:
-            settings["index_number"] = f"Error: {e}"
-
-        # Device info
-        try:
-            settings["battery_level"] = await self.get_battery_level()
-        except Exception as e:
-            settings["battery_level"] = f"Error: {e}"
-
-        try:
-            settings["clock"] = await self.get_clock()
-        except Exception as e:
-            settings["clock"] = f"Error: {e}"
-
-        # Sleep mode
-        try:
-            settings["sleep_mode"] = await self.get_sleep_status()
-        except Exception as e:
-            settings["sleep_mode"] = f"Error: {e}"
-
-        # FTP status
-        try:
-            settings["ftp_status"] = await self.get_ftp_status()
-        except Exception as e:
-            settings["ftp_status"] = f"Error: {e}"
-
-        logger.info(f"Retrieved all settings for {self.device_key}")
-        return settings
-
-    async def enable_ftp(self):
-        """Enable FTP server on the device.
-
-        According to NL43 protocol: FTP,On enables the FTP server
-        """
-        await self._send_command("FTP,On\r\n")
-        logger.info(f"FTP enabled on {self.device_key}")
-
-    async def disable_ftp(self):
-        """Disable FTP server on the device.
-
-        According to NL43 protocol: FTP,Off disables the FTP server
-        """
-        await self._send_command("FTP,Off\r\n")
-        logger.info(f"FTP disabled on {self.device_key}")
-
-    async def get_ftp_status(self) -> str:
-        """Query FTP server status on the device.
-
-        Returns: "On" or "Off"
-        """
-        resp = await self._send_command("FTP?\r\n")
-        logger.info(f"FTP status on {self.device_key}: {resp}")
-        return resp.strip()
-
-    async def list_ftp_files(self, remote_path: str = "/") -> List[dict]:
-        """List files on the device via FTP.
-
-        Args:
-            remote_path: Directory path on the device (default: root)
-
-        Returns:
-            List of file info dicts with 'name', 'size', 'modified', 'is_dir'
-        """
-        logger.info(f"Listing FTP files on {self.device_key} at {remote_path}")
-
-        def _list_ftp_sync():
-            """Synchronous FTP listing using ftplib (supports active mode)."""
-            ftp = FTP()
-            ftp.set_debuglevel(0)
-            try:
-                # Connect and login
-                ftp.connect(self.host, 21, timeout=10)
-                ftp.login(self.ftp_username, self.ftp_password)
-                ftp.set_pasv(False)  # Force active mode
-
-                # Change to target directory
-                if remote_path != "/":
-                    ftp.cwd(remote_path)
-
-                # Get directory listing with details
-                files = []
-                lines = []
-                ftp.retrlines('LIST', lines.append)
-
-                for line in lines:
-                    # Parse Unix-style ls output
-                    parts = line.split(None, 8)
-                    if len(parts) < 9:
-                        continue
-
-                    is_dir = parts[0].startswith('d')
-                    size = int(parts[4]) if not is_dir else 0
-                    name = parts[8]
-
-                    # Skip . and ..
-                    if name in ('.', '..'):
-                        continue
-
-                    # Parse modification time
-                    # Format: "Jan 07 14:23" or "Dec 25 2025"
-                    modified_str = f"{parts[5]} {parts[6]} {parts[7]}"
-                    modified_timestamp = None
-                    try:
-                        from datetime import datetime
-                        # Try parsing with time (recent files: "Jan 07 14:23")
-                        try:
-                            dt = datetime.strptime(modified_str, "%b %d %H:%M")
-                            # Add current year since it's not in the format
-                            dt = dt.replace(year=datetime.now().year)
-
-                            # If the resulting date is in the future, it's actually from last year
-                            if dt > datetime.now():
-                                dt = dt.replace(year=dt.year - 1)
-
-                            modified_timestamp = dt.isoformat()
-                        except ValueError:
-                            # Try parsing with year (older files: "Dec 25 2025")
-                            dt = datetime.strptime(modified_str, "%b %d %Y")
-                            modified_timestamp = dt.isoformat()
-                    except Exception as e:
-                        logger.warning(f"Failed to parse timestamp '{modified_str}': {e}")
-
-                    file_info = {
-                        "name": name,
-                        "path": f"{remote_path.rstrip('/')}/{name}",
-                        "size": size,
-                        "modified": modified_str,  # Keep original string
-                        "modified_timestamp": modified_timestamp,  # Add parsed timestamp
-                        "is_dir": is_dir,
-                    }
-                    files.append(file_info)
-                    logger.debug(f"Found file: {file_info}")
-
-                logger.info(f"Found {len(files)} files/directories on {self.device_key}")
-                return files
-
-            finally:
-                try:
-                    ftp.quit()
-                except:
-                    pass
-
-        try:
-            # Run synchronous FTP in thread pool
-            return await asyncio.to_thread(_list_ftp_sync)
-        except Exception as e:
-            logger.error(f"Failed to list FTP files on {self.device_key}: {e}")
-            raise ConnectionError(f"FTP connection failed: {str(e)}")
-
-    async def download_ftp_file(self, remote_path: str, local_path: str):
-        """Download a file from the device via FTP.
-
-        Args:
-            remote_path: Full path to file on the device
-            local_path: Local path where file will be saved
-        """
-        logger.info(f"Downloading {remote_path} from {self.device_key} to {local_path}")
-
-        def _download_ftp_sync():
-            """Synchronous FTP download using ftplib (supports active mode)."""
-            ftp = FTP()
-            ftp.set_debuglevel(0)
-            try:
-                # Connect and login
-                ftp.connect(self.host, 21, timeout=10)
-                ftp.login(self.ftp_username, self.ftp_password)
-                ftp.set_pasv(False)  # Force active mode
-
-                # Download file
-                with open(local_path, 'wb') as f:
-                    ftp.retrbinary(f'RETR {remote_path}', f.write)
-
-                logger.info(f"Successfully downloaded {remote_path} to {local_path}")
-
-            finally:
-                try:
-                    ftp.quit()
-                except:
-                    pass
-
-        try:
-            # Run synchronous FTP in thread pool
-            await asyncio.to_thread(_download_ftp_sync)
-        except Exception as e:
-            logger.error(f"Failed to download {remote_path} from {self.device_key}: {e}")
-            raise ConnectionError(f"FTP download failed: {str(e)}")

app/ui/routes.py

@@ -1,92 +0,0 @@
-"""
-UI Layer Routes - HTML page routes only (no business logic)
-"""
-from fastapi import APIRouter, Request
-from fastapi.responses import HTMLResponse, FileResponse
-from fastapi.templating import Jinja2Templates
-import os
-
-router = APIRouter()
-
-# Setup Jinja2 templates
-templates = Jinja2Templates(directory="app/ui/templates")
-
-# Read environment (development or production)
-ENVIRONMENT = os.getenv("ENVIRONMENT", "production")
-VERSION = "1.0.0"  # Terra-View version
-
-# Override TemplateResponse to include environment and version in context
-original_template_response = templates.TemplateResponse
-def custom_template_response(name, context=None, *args, **kwargs):
-    if context is None:
-        context = {}
-    context["environment"] = ENVIRONMENT
-    context["version"] = VERSION
-    return original_template_response(name, context, *args, **kwargs)
-templates.TemplateResponse = custom_template_response
-
-
-# ===== HTML PAGE ROUTES =====
-
-@router.get("/", response_class=HTMLResponse)
-async def dashboard(request: Request):
-    """Dashboard home page"""
-    return templates.TemplateResponse("dashboard.html", {"request": request})
-
-
-@router.get("/roster", response_class=HTMLResponse)
-async def roster_page(request: Request):
-    """Fleet roster page"""
-    return templates.TemplateResponse("roster.html", {"request": request})
-
-
-@router.get("/unit/{unit_id}", response_class=HTMLResponse)
-async def unit_detail_page(request: Request, unit_id: str):
-    """Unit detail page"""
-    return templates.TemplateResponse("unit_detail.html", {
-        "request": request,
-        "unit_id": unit_id
-    })
-
-
-@router.get("/settings", response_class=HTMLResponse)
-async def settings_page(request: Request):
-    """Settings page for roster management"""
-    return templates.TemplateResponse("settings.html", {"request": request})
-
-
-@router.get("/sound-level-meters", response_class=HTMLResponse)
-async def sound_level_meters_page(request: Request):
-    """Sound Level Meters management dashboard"""
-    return templates.TemplateResponse("sound_level_meters.html", {"request": request})
-
-
-@router.get("/seismographs", response_class=HTMLResponse)
-async def seismographs_page(request: Request):
-    """Seismographs management dashboard"""
-    return templates.TemplateResponse("seismographs.html", {"request": request})
-
-
-# ===== PWA ROUTES =====
-
-@router.get("/sw.js")
-async def service_worker():
-    """Serve service worker with proper headers for PWA"""
-    return FileResponse(
-        "app/ui/static/sw.js",
-        media_type="application/javascript",
-        headers={
-            "Service-Worker-Allowed": "/",
-            "Cache-Control": "no-cache"
-        }
-    )
-
-
-@router.get("/offline-db.js")
-async def offline_db_script():
-    """Serve offline database script"""
-    return FileResponse(
-        "app/ui/static/offline-db.js",
-        media_type="application/javascript",
-        headers={"Cache-Control": "no-cache"}
-    )

app/ui/templates/slm_detail.html

@@ -1,195 +0,0 @@
-{% extends "base.html" %}
-
-{% block title %}{{ unit_id }} - Sound Level Meter{% endblock %}
-
-{% block content %}
-<div class="mb-6">
-    <a href="/roster" class="text-seismo-orange hover:text-seismo-orange-dark flex items-center">
-        <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
-        </svg>
-        Back to Roster
-    </a>
-</div>
-
-<div class="mb-8">
-    <div class="flex justify-between items-start">
-        <div>
-            <h1 class="text-3xl font-bold text-gray-900 dark:text-white flex items-center">
-                <svg class="w-8 h-8 mr-3 text-seismo-orange" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
-                          d="M9 19V6l12-3v13M9 19c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zm12-3c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zM9 10l12-3">
-                    </path>
-                </svg>
-                {{ unit_id }}
-            </h1>
-            <p class="text-gray-600 dark:text-gray-400 mt-1">
-                {{ unit.slm_model or 'NL-43' }} Sound Level Meter
-            </p>
-        </div>
-        <div class="flex gap-2">
-            <span class="px-3 py-1 rounded-full text-sm font-medium
-                         {% if unit.deployed %}bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200
-                         {% else %}bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-200{% endif %}">
-                {% if unit.deployed %}Deployed{% else %}Benched{% endif %}
-            </span>
-        </div>
-    </div>
-</div>
-
-<!-- Control Panel -->
-<div class="mb-8">
-    <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Control Panel</h2>
-    <div hx-get="/slm/partials/{{ unit_id }}/controls"
-         hx-trigger="load, every 5s"
-         hx-swap="innerHTML">
-        <div class="text-center py-8 text-gray-500">Loading controls...</div>
-    </div>
-</div>
-
-<!-- Real-time Data Stream -->
-<div class="mb-8">
-    <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Real-time Measurements</h2>
-    <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
-        <div id="slm-stream-container">
-            <div class="text-center py-8">
-                <button onclick="startStream()"
-                        id="stream-start-btn"
-                        class="px-6 py-3 bg-seismo-orange text-white rounded-lg hover:bg-seismo-orange-dark transition-colors">
-                    Start Real-time Stream
-                </button>
-                <p class="text-sm text-gray-500 mt-2">Click to begin streaming live measurement data</p>
-            </div>
-            <div id="stream-data" class="hidden">
-                <div class="grid grid-cols-2 md:grid-cols-4 gap-4 mb-4">
-                    <div class="bg-gray-50 dark:bg-gray-900 rounded-lg p-4">
-                        <div class="text-sm text-gray-600 dark:text-gray-400 mb-1">Lp (Instant)</div>
-                        <div id="stream-lp" class="text-3xl font-bold text-gray-900 dark:text-white">--</div>
-                        <div class="text-xs text-gray-500">dB</div>
-                    </div>
-                    <div class="bg-gray-50 dark:bg-gray-900 rounded-lg p-4">
-                        <div class="text-sm text-gray-600 dark:text-gray-400 mb-1">Leq (Average)</div>
-                        <div id="stream-leq" class="text-3xl font-bold text-blue-600 dark:text-blue-400">--</div>
-                        <div class="text-xs text-gray-500">dB</div>
-                    </div>
-                    <div class="bg-gray-50 dark:bg-gray-900 rounded-lg p-4">
-                        <div class="text-sm text-gray-600 dark:text-gray-400 mb-1">Lmax</div>
-                        <div id="stream-lmax" class="text-3xl font-bold text-red-600 dark:text-red-400">--</div>
-                        <div class="text-xs text-gray-500">dB</div>
-                    </div>
-                    <div class="bg-gray-50 dark:bg-gray-900 rounded-lg p-4">
-                        <div class="text-sm text-gray-600 dark:text-gray-400 mb-1">Lmin</div>
-                        <div id="stream-lmin" class="text-3xl font-bold text-green-600 dark:text-green-400">--</div>
-                        <div class="text-xs text-gray-500">dB</div>
-                    </div>
-                </div>
-                <div class="flex justify-between items-center">
-                    <div class="text-xs text-gray-500">
-                        <span class="inline-block w-2 h-2 bg-green-500 rounded-full mr-2 animate-pulse"></span>
-                        Streaming
-                    </div>
-                    <button onclick="stopStream()"
-                            class="px-4 py-2 bg-red-600 text-white text-sm rounded-lg hover:bg-red-700 transition-colors">
-                        Stop Stream
-                    </button>
-                </div>
-            </div>
-        </div>
-    </div>
-</div>
-
-<!-- Device Information -->
-<div class="mb-8">
-    <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Device Information</h2>
-    <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
-        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">Model</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_model or 'NL-43' }}</div>
-            </div>
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">Serial Number</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_serial_number or 'N/A' }}</div>
-            </div>
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">Host</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_host or 'Not configured' }}</div>
-            </div>
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">TCP Port</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_tcp_port or 'N/A' }}</div>
-            </div>
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">Frequency Weighting</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_frequency_weighting or 'A' }}</div>
-            </div>
-            <div>
-                <div class="text-sm text-gray-600 dark:text-gray-400">Time Weighting</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.slm_time_weighting or 'F (Fast)' }}</div>
-            </div>
-            <div class="md:col-span-2">
-                <div class="text-sm text-gray-600 dark:text-gray-400">Location</div>
-                <div class="text-lg font-medium text-gray-900 dark:text-white">{{ unit.address or unit.location or 'Not specified' }}</div>
-            </div>
-            {% if unit.note %}
-            <div class="md:col-span-2">
-                <div class="text-sm text-gray-600 dark:text-gray-400">Notes</div>
-                <div class="text-gray-900 dark:text-white">{{ unit.note }}</div>
-            </div>
-            {% endif %}
-        </div>
-    </div>
-</div>
-
-<script>
-let ws = null;
-
-function startStream() {
-    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-    const wsUrl = `${protocol}//${window.location.host}/api/slmm/{{ unit_id }}/stream`;
-
-    ws = new WebSocket(wsUrl);
-
-    ws.onopen = () => {
-        document.getElementById('stream-start-btn').classList.add('hidden');
-        document.getElementById('stream-data').classList.remove('hidden');
-        console.log('WebSocket connected');
-    };
-
-    ws.onmessage = (event) => {
-        const data = JSON.parse(event.data);
-
-        if (data.error) {
-            console.error('Stream error:', data.error);
-            stopStream();
-            alert('Error: ' + data.error);
-            return;
-        }
-
-        // Update values
-        document.getElementById('stream-lp').textContent = data.lp || '--';
-        document.getElementById('stream-leq').textContent = data.leq || '--';
-        document.getElementById('stream-lmax').textContent = data.lmax || '--';
-        document.getElementById('stream-lmin').textContent = data.lmin || '--';
-    };
-
-    ws.onerror = (error) => {
-        console.error('WebSocket error:', error);
-        stopStream();
-    };
-
-    ws.onclose = () => {
-        console.log('WebSocket closed');
-    };
-}
-
-function stopStream() {
-    if (ws) {
-        ws.close();
-        ws = null;
-    }
-    document.getElementById('stream-start-btn').classList.remove('hidden');
-    document.getElementById('stream-data').classList.add('hidden');
-}
-</script>
-{% endblock %}

app/ui/templates/sound_level_meters.html

@@ -1,257 +0,0 @@
-{% extends "base.html" %}
-
-{% block title %}Sound Level Meters - Seismo Fleet Manager{% endblock %}
-
-{% block content %}
-<div class="mb-8">
-    <h1 class="text-3xl font-bold text-gray-900 dark:text-white">Sound Level Meters</h1>
-    <p class="text-gray-600 dark:text-gray-400 mt-1">Monitor and manage sound level measurement devices</p>
-</div>
-
-<!-- Summary Stats -->
-<div class="grid grid-cols-1 md:grid-cols-4 gap-6 mb-8"
-     hx-get="/api/slm-dashboard/stats"
-     hx-trigger="load, every 10s"
-     hx-swap="innerHTML">
-    <!-- Stats will be loaded here -->
-    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-24 rounded-xl"></div>
-    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-24 rounded-xl"></div>
-    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-24 rounded-xl"></div>
-    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-24 rounded-xl"></div>
-</div>
-
-<!-- Main Content Grid -->
-<div class="grid grid-cols-1 lg:grid-cols-3 gap-6">
-    <!-- SLM List -->
-    <div class="lg:col-span-1">
-        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
-            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Active Units</h2>
-
-            <!-- Search/Filter -->
-            <div class="mb-4">
-                <input type="text"
-                       placeholder="Search units..."
-                       class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                       hx-get="/api/slm-dashboard/units"
-                       hx-trigger="keyup changed delay:300ms"
-                       hx-target="#slm-list"
-                       hx-include="this"
-                       name="search">
-            </div>
-
-            <!-- SLM List -->
-            <div id="slm-list"
-                 class="space-y-2 max-h-[600px] overflow-y-auto"
-                 hx-get="/api/slm-dashboard/units"
-                 hx-trigger="load, every 10s"
-                 hx-swap="innerHTML">
-                <!-- Loading skeleton -->
-                <div class="animate-pulse space-y-2">
-                    <div class="bg-gray-200 dark:bg-gray-700 h-20 rounded-lg"></div>
-                    <div class="bg-gray-200 dark:bg-gray-700 h-20 rounded-lg"></div>
-                    <div class="bg-gray-200 dark:bg-gray-700 h-20 rounded-lg"></div>
-                </div>
-            </div>
-        </div>
-    </div>
-
-    <!-- Live View Panel -->
-    <div class="lg:col-span-2">
-        <div id="live-view-panel" class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
-            <!-- Initial state - no unit selected -->
-            <div class="flex flex-col items-center justify-center h-[600px] text-gray-400 dark:text-gray-500">
-                <svg class="w-24 h-24 mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15.536 8.464a5 5 0 010 7.072m2.828-9.9a9 9 0 010 12.728M5.586 15H4a1 1 0 01-1-1v-4a1 1 0 011-1h1.586l4.707-4.707C10.923 3.663 12 4.109 12 5v14c0 .891-1.077 1.337-1.707.707L5.586 15z"></path>
-                </svg>
-                <p class="text-lg font-medium">No unit selected</p>
-                <p class="text-sm mt-2">Select a sound level meter from the list to view live data</p>
-            </div>
-        </div>
-    </div>
-</div>
-
-<!-- Configuration Modal -->
-<div id="config-modal" class="hidden fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
-    <div class="bg-white dark:bg-slate-800 rounded-xl p-6 max-w-2xl w-full mx-4 max-h-[90vh] overflow-y-auto">
-        <div class="flex items-center justify-between mb-6">
-            <h3 class="text-2xl font-bold text-gray-900 dark:text-white">Configure SLM</h3>
-            <button onclick="closeConfigModal()" class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200">
-                <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
-                </svg>
-            </button>
-        </div>
-
-        <div id="config-modal-content">
-            <!-- Content loaded via HTMX -->
-            <div class="animate-pulse space-y-4">
-                <div class="h-4 bg-gray-200 dark:bg-gray-700 rounded w-3/4"></div>
-                <div class="h-4 bg-gray-200 dark:bg-gray-700 rounded"></div>
-                <div class="h-4 bg-gray-200 dark:bg-gray-700 rounded w-5/6"></div>
-            </div>
-        </div>
-    </div>
-</div>
-
-<script>
-// Function to select a unit and load live view
-function selectUnit(unitId) {
-    // Remove active state from all items
-    document.querySelectorAll('.slm-unit-item').forEach(item => {
-        item.classList.remove('bg-seismo-orange', 'text-white');
-        item.classList.add('bg-gray-100', 'dark:bg-gray-700');
-    });
-
-    // Add active state to clicked item
-    event.currentTarget.classList.remove('bg-gray-100', 'dark:bg-gray-700');
-    event.currentTarget.classList.add('bg-seismo-orange', 'text-white');
-
-    // Load live view for this unit
-    htmx.ajax('GET', `/api/slm-dashboard/live-view/${unitId}`, {
-        target: '#live-view-panel',
-        swap: 'innerHTML'
-    });
-}
-
-// Configuration modal functions
-function openConfigModal(unitId) {
-    const modal = document.getElementById('config-modal');
-    modal.classList.remove('hidden');
-    
-    // Load configuration form via HTMX
-    htmx.ajax('GET', `/api/slm-dashboard/config/${unitId}`, {
-        target: '#config-modal-content',
-        swap: 'innerHTML'
-    });
-}
-
-function closeConfigModal() {
-    document.getElementById('config-modal').classList.add('hidden');
-}
-
-// Close modal on escape key
-document.addEventListener('keydown', function(e) {
-    if (e.key === 'Escape') {
-        closeConfigModal();
-    }
-});
-
-// Close modal when clicking outside
-document.getElementById('config-modal')?.addEventListener('click', function(e) {
-    if (e.target === this) {
-        closeConfigModal();
-    }
-});
-
-// Initialize WebSocket for selected unit
-let currentWebSocket = null;
-
-function initLiveDataStream(unitId) {
-    // Close existing connection if any
-    if (currentWebSocket) {
-        currentWebSocket.close();
-    }
-
-    // WebSocket URL for SLMM backend via proxy
-    const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-    const wsUrl = `${wsProtocol}//${window.location.host}/api/slmm/${unitId}/live`;
-
-    currentWebSocket = new WebSocket(wsUrl);
-
-    currentWebSocket.onopen = function() {
-        console.log('WebSocket connected');
-        // Toggle button visibility
-        const startBtn = document.getElementById('start-stream-btn');
-        const stopBtn = document.getElementById('stop-stream-btn');
-        if (startBtn) startBtn.style.display = 'none';
-        if (stopBtn) stopBtn.style.display = 'flex';
-    };
-
-    currentWebSocket.onmessage = async function(event) {
-        try {
-            let payload = event.data;
-            if (payload instanceof Blob) {
-                payload = await payload.text();
-            }
-            const data = typeof payload === 'string' ? JSON.parse(payload) : payload;
-            updateLiveChart(data);
-            updateLiveMetrics(data);
-        } catch (error) {
-            console.error('Error parsing WebSocket message:', error);
-        }
-    };
-
-    currentWebSocket.onerror = function(error) {
-        console.error('WebSocket error:', error);
-    };
-
-    currentWebSocket.onclose = function() {
-        console.log('WebSocket closed');
-        // Toggle button visibility
-        const startBtn = document.getElementById('start-stream-btn');
-        const stopBtn = document.getElementById('stop-stream-btn');
-        if (startBtn) startBtn.style.display = 'flex';
-        if (stopBtn) stopBtn.style.display = 'none';
-    };
-}
-
-function stopLiveDataStream() {
-    if (currentWebSocket) {
-        currentWebSocket.close();
-        currentWebSocket = null;
-    }
-}
-
-// Update live chart with new data point
-let chartData = {
-    timestamps: [],
-    lp: [],
-    leq: []
-};
-
-function updateLiveChart(data) {
-    const now = new Date();
-    chartData.timestamps.push(now.toLocaleTimeString());
-    chartData.lp.push(parseFloat(data.lp || 0));
-    chartData.leq.push(parseFloat(data.leq || 0));
-
-    // Keep only last 60 data points (1 minute at 1 sample/sec)
-    if (chartData.timestamps.length > 60) {
-        chartData.timestamps.shift();
-        chartData.lp.shift();
-        chartData.leq.shift();
-    }
-
-    // Update chart (using Chart.js if available)
-    if (window.liveChart) {
-        window.liveChart.data.labels = chartData.timestamps;
-        window.liveChart.data.datasets[0].data = chartData.lp;
-        window.liveChart.data.datasets[1].data = chartData.leq;
-        window.liveChart.update('none'); // Update without animation for smooth real-time
-    }
-}
-
-function updateLiveMetrics(data) {
-    // Update metric displays
-    if (document.getElementById('live-lp')) {
-        document.getElementById('live-lp').textContent = data.lp || '--';
-    }
-    if (document.getElementById('live-leq')) {
-        document.getElementById('live-leq').textContent = data.leq || '--';
-    }
-    if (document.getElementById('live-lmax')) {
-        document.getElementById('live-lmax').textContent = data.lmax || '--';
-    }
-    if (document.getElementById('live-lmin')) {
-        document.getElementById('live-lmin').textContent = data.lmin || '--';
-    }
-}
-
-// Cleanup on page unload
-window.addEventListener('beforeunload', function() {
-    if (currentWebSocket) {
-        currentWebSocket.close();
-    }
-});
-</script>
-{% endblock %}

backend/init_projects_db.py

@@ -0,0 +1,108 @@
+#!/usr/bin/env python3
+"""
+Database initialization script for Projects system.
+
+This script creates the new project management tables and populates
+the project_types table with default templates.
+
+Usage:
+    python -m backend.init_projects_db
+"""
+
+from sqlalchemy.orm import Session
+from backend.database import engine, SessionLocal
+from backend.models import (
+    Base,
+    ProjectType,
+    Project,
+    MonitoringLocation,
+    UnitAssignment,
+    ScheduledAction,
+    RecordingSession,
+    DataFile,
+)
+from datetime import datetime
+
+
+def init_project_types(db: Session):
+    """Initialize default project types."""
+    project_types = [
+        {
+            "id": "sound_monitoring",
+            "name": "Sound Monitoring",
+            "description": "Noise monitoring projects with sound level meters and NRLs (Noise Recording Locations)",
+            "icon": "volume-2",  # Lucide icon name
+            "supports_sound": True,
+            "supports_vibration": False,
+        },
+        {
+            "id": "vibration_monitoring",
+            "name": "Vibration Monitoring",
+            "description": "Seismic/vibration monitoring projects with seismographs and monitoring points",
+            "icon": "activity",  # Lucide icon name
+            "supports_sound": False,
+            "supports_vibration": True,
+        },
+        {
+            "id": "combined",
+            "name": "Combined Monitoring",
+            "description": "Full-spectrum monitoring with both sound and vibration capabilities",
+            "icon": "layers",  # Lucide icon name
+            "supports_sound": True,
+            "supports_vibration": True,
+        },
+    ]
+
+    for pt_data in project_types:
+        existing = db.query(ProjectType).filter_by(id=pt_data["id"]).first()
+        if not existing:
+            pt = ProjectType(**pt_data)
+            db.add(pt)
+            print(f"✓ Created project type: {pt_data['name']}")
+        else:
+            print(f"  Project type already exists: {pt_data['name']}")
+
+    db.commit()
+
+
+def create_tables():
+    """Create all tables defined in models."""
+    print("Creating project management tables...")
+    Base.metadata.create_all(bind=engine)
+    print("✓ Tables created successfully")
+
+
+def main():
+    print("=" * 60)
+    print("Terra-View Projects System - Database Initialization")
+    print("=" * 60)
+    print()
+
+    # Create tables
+    create_tables()
+    print()
+
+    # Initialize project types
+    db = SessionLocal()
+    try:
+        print("Initializing project types...")
+        init_project_types(db)
+        print()
+        print("=" * 60)
+        print("✓ Database initialization complete!")
+        print("=" * 60)
+        print()
+        print("Next steps:")
+        print("  1. Restart Terra-View to load new routes")
+        print("  2. Navigate to /projects to create your first project")
+        print("  3. Check documentation for API endpoints")
+    except Exception as e:
+        print(f"✗ Error during initialization: {e}")
+        db.rollback()
+        raise
+    finally:
+        db.close()
+
+
+if __name__ == "__main__":
+    main()

backend/main.py

@@ -0,0 +1,669 @@
+import os
+import logging
+from fastapi import FastAPI, Request, Depends
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse, FileResponse, JSONResponse
+from fastapi.exceptions import RequestValidationError
+from sqlalchemy.orm import Session
+from typing import List, Dict, Optional
+from pydantic import BaseModel
+
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
+)
+logger = logging.getLogger(__name__)
+
+from backend.database import engine, Base, get_db
+from backend.routers import roster, units, photos, roster_edit, roster_rename, dashboard, dashboard_tabs, activity, slmm, slm_ui, slm_dashboard, seismo_dashboard, projects, project_locations, scheduler
+from backend.services.snapshot import emit_status_snapshot
+from backend.models import IgnoredUnit
+
+# Create database tables
+Base.metadata.create_all(bind=engine)
+
+# Read environment (development or production)
+ENVIRONMENT = os.getenv("ENVIRONMENT", "production")
+
+# Initialize FastAPI app
+VERSION = "0.4.2"
+app = FastAPI(
+    title="Seismo Fleet Manager",
+    description="Backend API for managing seismograph fleet status",
+    version=VERSION
+)
+
+# Add validation error handler to log details
+@app.exception_handler(RequestValidationError)
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    logger.error(f"Validation error on {request.url}: {exc.errors()}")
+    logger.error(f"Body: {await request.body()}")
+    return JSONResponse(
+        status_code=400,
+        content={"detail": exc.errors()}
+    )
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Mount static files
+app.mount("/static", StaticFiles(directory="backend/static"), name="static")
+
+# Setup Jinja2 templates
+templates = Jinja2Templates(directory="templates")
+
+# Add custom context processor to inject environment variable into all templates
+@app.middleware("http")
+async def add_environment_to_context(request: Request, call_next):
+    """Middleware to add environment variable to request state"""
+    request.state.environment = ENVIRONMENT
+    response = await call_next(request)
+    return response
+
+# Override TemplateResponse to include environment and version in context
+original_template_response = templates.TemplateResponse
+def custom_template_response(name, context=None, *args, **kwargs):
+    if context is None:
+        context = {}
+    context["environment"] = ENVIRONMENT
+    context["version"] = VERSION
+    return original_template_response(name, context, *args, **kwargs)
+templates.TemplateResponse = custom_template_response
+
+# Include API routers
+app.include_router(roster.router)
+app.include_router(units.router)
+app.include_router(photos.router)
+app.include_router(roster_edit.router)
+app.include_router(roster_rename.router)
+app.include_router(dashboard.router)
+app.include_router(dashboard_tabs.router)
+app.include_router(activity.router)
+app.include_router(slmm.router)
+app.include_router(slm_ui.router)
+app.include_router(slm_dashboard.router)
+app.include_router(seismo_dashboard.router)
+
+from backend.routers import settings
+app.include_router(settings.router)
+
+# Projects system routers
+app.include_router(projects.router)
+app.include_router(project_locations.router)
+app.include_router(scheduler.router)
+
+# Start scheduler service on application startup
+from backend.services.scheduler import start_scheduler, stop_scheduler
+
+@app.on_event("startup")
+async def startup_event():
+    """Initialize services on app startup"""
+    logger.info("Starting scheduler service...")
+    await start_scheduler()
+    logger.info("Scheduler service started")
+
+@app.on_event("shutdown")
+def shutdown_event():
+    """Clean up services on app shutdown"""
+    logger.info("Stopping scheduler service...")
+    stop_scheduler()
+    logger.info("Scheduler service stopped")
+
+
+# Legacy routes from the original backend
+from backend import routes as legacy_routes
+app.include_router(legacy_routes.router)
+
+
+# HTML page routes
+@app.get("/", response_class=HTMLResponse)
+async def dashboard(request: Request):
+    """Dashboard home page"""
+    return templates.TemplateResponse("dashboard.html", {"request": request})
+
+
+@app.get("/roster", response_class=HTMLResponse)
+async def roster_page(request: Request):
+    """Fleet roster page"""
+    return templates.TemplateResponse("roster.html", {"request": request})
+
+
+@app.get("/unit/{unit_id}", response_class=HTMLResponse)
+async def unit_detail_page(request: Request, unit_id: str):
+    """Unit detail page"""
+    return templates.TemplateResponse("unit_detail.html", {
+        "request": request,
+        "unit_id": unit_id
+    })
+
+
+@app.get("/settings", response_class=HTMLResponse)
+async def settings_page(request: Request):
+    """Settings page for roster management"""
+    return templates.TemplateResponse("settings.html", {"request": request})
+
+
+@app.get("/sound-level-meters", response_class=HTMLResponse)
+async def sound_level_meters_page(request: Request):
+    """Sound Level Meters management dashboard"""
+    return templates.TemplateResponse("sound_level_meters.html", {"request": request})
+
+
+@app.get("/slm/{unit_id}", response_class=HTMLResponse)
+async def slm_legacy_dashboard(
+    request: Request,
+    unit_id: str,
+    from_project: Optional[str] = None,
+    from_nrl: Optional[str] = None,
+    db: Session = Depends(get_db)
+):
+    """Legacy SLM control center dashboard for a specific unit"""
+    # Get project details if from_project is provided
+    project = None
+    if from_project:
+        from backend.models import Project
+        project = db.query(Project).filter_by(id=from_project).first()
+
+    # Get NRL location details if from_nrl is provided
+    nrl_location = None
+    if from_nrl:
+        from backend.models import NRLLocation
+        nrl_location = db.query(NRLLocation).filter_by(id=from_nrl).first()
+
+    return templates.TemplateResponse("slm_legacy_dashboard.html", {
+        "request": request,
+        "unit_id": unit_id,
+        "from_project": from_project,
+        "from_nrl": from_nrl,
+        "project": project,
+        "nrl_location": nrl_location
+    })
+
+
+@app.get("/seismographs", response_class=HTMLResponse)
+async def seismographs_page(request: Request):
+    """Seismographs management dashboard"""
+    return templates.TemplateResponse("seismographs.html", {"request": request})
+
+
+@app.get("/projects", response_class=HTMLResponse)
+async def projects_page(request: Request):
+    """Projects management and overview"""
+    return templates.TemplateResponse("projects/overview.html", {"request": request})
+
+
+@app.get("/projects/{project_id}", response_class=HTMLResponse)
+async def project_detail_page(request: Request, project_id: str):
+    """Project detail dashboard"""
+    return templates.TemplateResponse("projects/detail.html", {
+        "request": request,
+        "project_id": project_id
+    })
+
+
+@app.get("/projects/{project_id}/nrl/{location_id}", response_class=HTMLResponse)
+async def nrl_detail_page(
+    request: Request,
+    project_id: str,
+    location_id: str,
+    db: Session = Depends(get_db)
+):
+    """NRL (Noise Recording Location) detail page with tabs"""
+    from backend.models import Project, MonitoringLocation, UnitAssignment, RosterUnit, RecordingSession, DataFile
+    from sqlalchemy import and_
+
+    # Get project
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        return templates.TemplateResponse("404.html", {
+            "request": request,
+            "message": "Project not found"
+        }, status_code=404)
+
+    # Get location
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id
+    ).first()
+
+    if not location:
+        return templates.TemplateResponse("404.html", {
+            "request": request,
+            "message": "Location not found"
+        }, status_code=404)
+
+    # Get active assignment
+    assignment = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.location_id == location_id,
+            UnitAssignment.status == "active"
+        )
+    ).first()
+
+    assigned_unit = None
+    if assignment:
+        assigned_unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+
+    # Get session count
+    session_count = db.query(RecordingSession).filter_by(location_id=location_id).count()
+
+    # Get file count (DataFile links to session, not directly to location)
+    file_count = db.query(DataFile).join(
+        RecordingSession,
+        DataFile.session_id == RecordingSession.id
+    ).filter(RecordingSession.location_id == location_id).count()
+
+    # Check for active session
+    active_session = db.query(RecordingSession).filter(
+        and_(
+            RecordingSession.location_id == location_id,
+            RecordingSession.status == "recording"
+        )
+    ).first()
+
+    return templates.TemplateResponse("nrl_detail.html", {
+        "request": request,
+        "project_id": project_id,
+        "location_id": location_id,
+        "project": project,
+        "location": location,
+        "assignment": assignment,
+        "assigned_unit": assigned_unit,
+        "session_count": session_count,
+        "file_count": file_count,
+        "active_session": active_session,
+    })
+
+
+# ===== PWA ROUTES =====
+
+@app.get("/sw.js")
+async def service_worker():
+    """Serve service worker with proper headers for PWA"""
+    return FileResponse(
+        "backend/static/sw.js",
+        media_type="application/javascript",
+        headers={
+            "Service-Worker-Allowed": "/",
+            "Cache-Control": "no-cache"
+        }
+    )
+
+
+@app.get("/offline-db.js")
+async def offline_db_script():
+    """Serve offline database script"""
+    return FileResponse(
+        "backend/static/offline-db.js",
+        media_type="application/javascript",
+        headers={"Cache-Control": "no-cache"}
+    )
+
+
+# Pydantic model for sync edits
+class EditItem(BaseModel):
+    id: int
+    unitId: str
+    changes: Dict
+    timestamp: int
+
+
+class SyncEditsRequest(BaseModel):
+    edits: List[EditItem]
+
+
+@app.post("/api/sync-edits")
+async def sync_edits(request: SyncEditsRequest, db: Session = Depends(get_db)):
+    """Process offline edit queue and sync to database"""
+    from backend.models import RosterUnit
+
+    results = []
+    synced_ids = []
+
+    for edit in request.edits:
+        try:
+            # Find the unit
+            unit = db.query(RosterUnit).filter_by(id=edit.unitId).first()
+
+            if not unit:
+                results.append({
+                    "id": edit.id,
+                    "status": "error",
+                    "reason": f"Unit {edit.unitId} not found"
+                })
+                continue
+
+            # Apply changes
+            for key, value in edit.changes.items():
+                if hasattr(unit, key):
+                    # Handle boolean conversions
+                    if key in ['deployed', 'retired']:
+                        setattr(unit, key, value in ['true', True, 'True', '1', 1])
+                    else:
+                        setattr(unit, key, value if value != '' else None)
+
+            db.commit()
+
+            results.append({
+                "id": edit.id,
+                "status": "success"
+            })
+            synced_ids.append(edit.id)
+
+        except Exception as e:
+            db.rollback()
+            results.append({
+                "id": edit.id,
+                "status": "error",
+                "reason": str(e)
+            })
+
+    synced_count = len(synced_ids)
+
+    return JSONResponse({
+        "synced": synced_count,
+        "total": len(request.edits),
+        "synced_ids": synced_ids,
+        "results": results
+    })
+
+
+@app.get("/partials/roster-deployed", response_class=HTMLResponse)
+async def roster_deployed_partial(request: Request):
+    """Partial template for deployed units tab"""
+    from datetime import datetime
+    snapshot = emit_status_snapshot()
+
+    units_list = []
+    for unit_id, unit_data in snapshot["active"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data.get("status", "Unknown"),
+            "age": unit_data.get("age", "N/A"),
+            "last_seen": unit_data.get("last", "Never"),
+            "deployed": unit_data.get("deployed", False),
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "address": unit_data.get("address", ""),
+            "coordinates": unit_data.get("coordinates", ""),
+            "project_id": unit_data.get("project_id", ""),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Sort by status priority (Missing > Pending > OK) then by ID
+    status_priority = {"Missing": 0, "Pending": 1, "OK": 2}
+    units_list.sort(key=lambda x: (status_priority.get(x["status"], 3), x["id"]))
+
+    return templates.TemplateResponse("partials/roster_table.html", {
+        "request": request,
+        "units": units_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/partials/roster-benched", response_class=HTMLResponse)
+async def roster_benched_partial(request: Request):
+    """Partial template for benched units tab"""
+    from datetime import datetime
+    snapshot = emit_status_snapshot()
+
+    units_list = []
+    for unit_id, unit_data in snapshot["benched"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data.get("status", "N/A"),
+            "age": unit_data.get("age", "N/A"),
+            "last_seen": unit_data.get("last", "Never"),
+            "deployed": unit_data.get("deployed", False),
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "address": unit_data.get("address", ""),
+            "coordinates": unit_data.get("coordinates", ""),
+            "project_id": unit_data.get("project_id", ""),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Sort by ID
+    units_list.sort(key=lambda x: x["id"])
+
+    return templates.TemplateResponse("partials/roster_table.html", {
+        "request": request,
+        "units": units_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/partials/roster-retired", response_class=HTMLResponse)
+async def roster_retired_partial(request: Request):
+    """Partial template for retired units tab"""
+    from datetime import datetime
+    snapshot = emit_status_snapshot()
+
+    units_list = []
+    for unit_id, unit_data in snapshot["retired"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data["status"],
+            "age": unit_data["age"],
+            "last_seen": unit_data["last"],
+            "deployed": unit_data["deployed"],
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Sort by ID
+    units_list.sort(key=lambda x: x["id"])
+
+    return templates.TemplateResponse("partials/retired_table.html", {
+        "request": request,
+        "units": units_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/partials/roster-ignored", response_class=HTMLResponse)
+async def roster_ignored_partial(request: Request, db: Session = Depends(get_db)):
+    """Partial template for ignored units tab"""
+    from datetime import datetime
+
+    ignored = db.query(IgnoredUnit).all()
+    ignored_list = []
+    for unit in ignored:
+        ignored_list.append({
+            "id": unit.id,
+            "reason": unit.reason or "",
+            "ignored_at": unit.ignored_at.strftime("%Y-%m-%d %H:%M:%S") if unit.ignored_at else "Unknown"
+        })
+
+    # Sort by ID
+    ignored_list.sort(key=lambda x: x["id"])
+
+    return templates.TemplateResponse("partials/ignored_table.html", {
+        "request": request,
+        "ignored_units": ignored_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/partials/unknown-emitters", response_class=HTMLResponse)
+async def unknown_emitters_partial(request: Request):
+    """Partial template for unknown emitters (HTMX)"""
+    snapshot = emit_status_snapshot()
+
+    unknown_list = []
+    for unit_id, unit_data in snapshot.get("unknown", {}).items():
+        unknown_list.append({
+            "id": unit_id,
+            "status": unit_data["status"],
+            "age": unit_data["age"],
+            "fname": unit_data.get("fname", ""),
+        })
+
+    # Sort by ID
+    unknown_list.sort(key=lambda x: x["id"])
+
+    return templates.TemplateResponse("partials/unknown_emitters.html", {
+        "request": request,
+        "unknown_units": unknown_list
+    })
+
+
+@app.get("/partials/devices-all", response_class=HTMLResponse)
+async def devices_all_partial(request: Request):
+    """Unified partial template for ALL devices with comprehensive filtering support"""
+    from datetime import datetime
+    snapshot = emit_status_snapshot()
+
+    units_list = []
+
+    # Add deployed/active units
+    for unit_id, unit_data in snapshot["active"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data.get("status", "Unknown"),
+            "age": unit_data.get("age", "N/A"),
+            "last_seen": unit_data.get("last", "Never"),
+            "deployed": True,
+            "retired": False,
+            "ignored": False,
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "address": unit_data.get("address", ""),
+            "coordinates": unit_data.get("coordinates", ""),
+            "project_id": unit_data.get("project_id", ""),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Add benched units
+    for unit_id, unit_data in snapshot["benched"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data.get("status", "N/A"),
+            "age": unit_data.get("age", "N/A"),
+            "last_seen": unit_data.get("last", "Never"),
+            "deployed": False,
+            "retired": False,
+            "ignored": False,
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "address": unit_data.get("address", ""),
+            "coordinates": unit_data.get("coordinates", ""),
+            "project_id": unit_data.get("project_id", ""),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Add retired units
+    for unit_id, unit_data in snapshot["retired"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": "Retired",
+            "age": "N/A",
+            "last_seen": "N/A",
+            "deployed": False,
+            "retired": True,
+            "ignored": False,
+            "note": unit_data.get("note", ""),
+            "device_type": unit_data.get("device_type", "seismograph"),
+            "address": unit_data.get("address", ""),
+            "coordinates": unit_data.get("coordinates", ""),
+            "project_id": unit_data.get("project_id", ""),
+            "last_calibrated": unit_data.get("last_calibrated"),
+            "next_calibration_due": unit_data.get("next_calibration_due"),
+            "deployed_with_modem_id": unit_data.get("deployed_with_modem_id"),
+            "ip_address": unit_data.get("ip_address"),
+            "phone_number": unit_data.get("phone_number"),
+            "hardware_model": unit_data.get("hardware_model"),
+        })
+
+    # Add ignored units
+    for unit_id, unit_data in snapshot.get("ignored", {}).items():
+        units_list.append({
+            "id": unit_id,
+            "status": "Ignored",
+            "age": "N/A",
+            "last_seen": "N/A",
+            "deployed": False,
+            "retired": False,
+            "ignored": True,
+            "note": unit_data.get("note", unit_data.get("reason", "")),
+            "device_type": unit_data.get("device_type", "unknown"),
+            "address": "",
+            "coordinates": "",
+            "project_id": "",
+            "last_calibrated": None,
+            "next_calibration_due": None,
+            "deployed_with_modem_id": None,
+            "ip_address": None,
+            "phone_number": None,
+            "hardware_model": None,
+        })
+
+    # Sort by status category, then by ID
+    def sort_key(unit):
+        # Priority: deployed (active) -> benched -> retired -> ignored
+        if unit["deployed"]:
+            return (0, unit["id"])
+        elif not unit["retired"] and not unit["ignored"]:
+            return (1, unit["id"])
+        elif unit["retired"]:
+            return (2, unit["id"])
+        else:
+            return (3, unit["id"])
+
+    units_list.sort(key=sort_key)
+
+    return templates.TemplateResponse("partials/devices_table.html", {
+        "request": request,
+        "units": units_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/health")
+def health_check():
+    """Health check endpoint"""
+    return {
+        "message": f"Seismo Fleet Manager v{VERSION}",
+        "status": "running",
+        "version": VERSION
+    }
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8001)

backend/migrate_add_device_types.py

@@ -0,0 +1,84 @@
+"""
+Migration script to add device type support to the roster table.
+
+This adds columns for:
+- device_type (seismograph/modem discriminator)
+- Seismograph-specific fields (calibration dates, modem pairing)
+- Modem-specific fields (IP address, phone number, hardware model)
+
+Run this script once to migrate an existing database.
+"""
+
+import sqlite3
+import os
+
+# Database path
+DB_PATH = "./data/seismo_fleet.db"
+
+def migrate_database():
+    """Add new columns to the roster table"""
+
+    if not os.path.exists(DB_PATH):
+        print(f"Database not found at {DB_PATH}")
+        print("The database will be created automatically when you run the application.")
+        return
+
+    print(f"Migrating database: {DB_PATH}")
+
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+
+    # Check if device_type column already exists
+    cursor.execute("PRAGMA table_info(roster)")
+    columns = [col[1] for col in cursor.fetchall()]
+
+    if "device_type" in columns:
+        print("Migration already applied - device_type column exists")
+        conn.close()
+        return
+
+    print("Adding new columns to roster table...")
+
+    try:
+        # Add device type discriminator
+        cursor.execute("ALTER TABLE roster ADD COLUMN device_type TEXT DEFAULT 'seismograph'")
+        print("  ✓ Added device_type column")
+
+        # Add seismograph-specific fields
+        cursor.execute("ALTER TABLE roster ADD COLUMN last_calibrated DATE")
+        print("  ✓ Added last_calibrated column")
+
+        cursor.execute("ALTER TABLE roster ADD COLUMN next_calibration_due DATE")
+        print("  ✓ Added next_calibration_due column")
+
+        cursor.execute("ALTER TABLE roster ADD COLUMN deployed_with_modem_id TEXT")
+        print("  ✓ Added deployed_with_modem_id column")
+
+        # Add modem-specific fields
+        cursor.execute("ALTER TABLE roster ADD COLUMN ip_address TEXT")
+        print("  ✓ Added ip_address column")
+
+        cursor.execute("ALTER TABLE roster ADD COLUMN phone_number TEXT")
+        print("  ✓ Added phone_number column")
+
+        cursor.execute("ALTER TABLE roster ADD COLUMN hardware_model TEXT")
+        print("  ✓ Added hardware_model column")
+
+        # Set all existing units to seismograph type
+        cursor.execute("UPDATE roster SET device_type = 'seismograph' WHERE device_type IS NULL")
+        print("  ✓ Set existing units to seismograph type")
+
+        conn.commit()
+        print("\nMigration completed successfully!")
+
+    except sqlite3.Error as e:
+        print(f"\nError during migration: {e}")
+        conn.rollback()
+        raise
+
+    finally:
+        conn.close()
+
+
+if __name__ == "__main__":
+    migrate_database()

backend/migrate_add_slm_fields.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+"""
+Database migration: Add sound level meter fields to roster table.
+
+Adds columns for sound_level_meter device type support.
+"""
+
+import sqlite3
+from pathlib import Path
+
+def migrate():
+    """Add SLM fields to roster table if they don't exist."""
+
+    # Try multiple possible database locations
+    possible_paths = [
+        Path("data/seismo_fleet.db"),
+        Path("data/sfm.db"),
+        Path("data/seismo.db"),
+    ]
+
+    db_path = None
+    for path in possible_paths:
+        if path.exists():
+            db_path = path
+            break
+
+    if db_path is None:
+        print(f"Database not found in any of: {[str(p) for p in possible_paths]}")
+        print("Creating database with models.py will include new fields automatically.")
+        return
+
+    print(f"Using database: {db_path}")
+
+    conn = sqlite3.connect(db_path)
+    cursor = conn.cursor()
+
+    # Check if columns already exist
+    cursor.execute("PRAGMA table_info(roster)")
+    existing_columns = {row[1] for row in cursor.fetchall()}
+
+    new_columns = {
+        "slm_host": "TEXT",
+        "slm_tcp_port": "INTEGER",
+        "slm_model": "TEXT",
+        "slm_serial_number": "TEXT",
+        "slm_frequency_weighting": "TEXT",
+        "slm_time_weighting": "TEXT",
+        "slm_measurement_range": "TEXT",
+        "slm_last_check": "DATETIME",
+    }
+
+    migrations_applied = []
+
+    for column_name, column_type in new_columns.items():
+        if column_name not in existing_columns:
+            try:
+                cursor.execute(f"ALTER TABLE roster ADD COLUMN {column_name} {column_type}")
+                migrations_applied.append(column_name)
+                print(f"✓ Added column: {column_name} ({column_type})")
+            except sqlite3.OperationalError as e:
+                print(f"✗ Failed to add column {column_name}: {e}")
+        else:
+            print(f"○ Column already exists: {column_name}")
+
+    conn.commit()
+    conn.close()
+
+    if migrations_applied:
+        print(f"\n✓ Migration complete! Added {len(migrations_applied)} new columns.")
+    else:
+        print("\n○ No migration needed - all columns already exist.")
+
+    print("\nSound level meter fields are now available in the roster table.")
+    print("You can now set device_type='sound_level_meter' for SLM devices.")
+
+
+if __name__ == "__main__":
+    migrate()

backend/migrate_add_unit_history.py

@@ -0,0 +1,78 @@
+"""
+Migration script to add unit history timeline support.
+
+This creates the unit_history table to track all changes to units:
+- Note changes (archived old notes, new notes)
+- Deployment status changes (deployed/benched)
+- Retired status changes
+- Other field changes
+
+Run this script once to migrate an existing database.
+"""
+
+import sqlite3
+import os
+
+# Database path
+DB_PATH = "./data/seismo_fleet.db"
+
+def migrate_database():
+    """Create the unit_history table"""
+
+    if not os.path.exists(DB_PATH):
+        print(f"Database not found at {DB_PATH}")
+        print("The database will be created automatically when you run the application.")
+        return
+
+    print(f"Migrating database: {DB_PATH}")
+
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+
+    # Check if unit_history table already exists
+    cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='unit_history'")
+    if cursor.fetchone():
+        print("Migration already applied - unit_history table exists")
+        conn.close()
+        return
+
+    print("Creating unit_history table...")
+
+    try:
+        cursor.execute("""
+            CREATE TABLE unit_history (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                unit_id TEXT NOT NULL,
+                change_type TEXT NOT NULL,
+                field_name TEXT,
+                old_value TEXT,
+                new_value TEXT,
+                changed_at TIMESTAMP NOT NULL,
+                source TEXT DEFAULT 'manual',
+                notes TEXT
+            )
+        """)
+        print("  ✓ Created unit_history table")
+
+        # Create indexes for better query performance
+        cursor.execute("CREATE INDEX idx_unit_history_unit_id ON unit_history(unit_id)")
+        print("  ✓ Created index on unit_id")
+
+        cursor.execute("CREATE INDEX idx_unit_history_changed_at ON unit_history(changed_at)")
+        print("  ✓ Created index on changed_at")
+
+        conn.commit()
+        print("\nMigration completed successfully!")
+        print("Units will now track their complete history of changes.")
+
+    except sqlite3.Error as e:
+        print(f"\nError during migration: {e}")
+        conn.rollback()
+        raise
+
+    finally:
+        conn.close()
+
+
+if __name__ == "__main__":
+    migrate_database()

backend/migrate_add_user_preferences.py

@@ -0,0 +1,80 @@
+"""
+Migration script to add user_preferences table.
+
+This creates a new table for storing persistent user preferences:
+- Display settings (timezone, theme, date format)
+- Auto-refresh configuration
+- Calibration defaults
+- Status threshold customization
+
+Run this script once to migrate an existing database.
+"""
+
+import sqlite3
+import os
+
+# Database path
+DB_PATH = "./data/seismo_fleet.db"
+
+def migrate_database():
+    """Create user_preferences table"""
+
+    if not os.path.exists(DB_PATH):
+        print(f"Database not found at {DB_PATH}")
+        print("The database will be created automatically when you run the application.")
+        return
+
+    print(f"Migrating database: {DB_PATH}")
+
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+
+    # Check if user_preferences table already exists
+    cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='user_preferences'")
+    table_exists = cursor.fetchone()
+
+    if table_exists:
+        print("Migration already applied - user_preferences table exists")
+        conn.close()
+        return
+
+    print("Creating user_preferences table...")
+
+    try:
+        cursor.execute("""
+            CREATE TABLE user_preferences (
+                id INTEGER PRIMARY KEY DEFAULT 1,
+                timezone TEXT DEFAULT 'America/New_York',
+                theme TEXT DEFAULT 'auto',
+                auto_refresh_interval INTEGER DEFAULT 10,
+                date_format TEXT DEFAULT 'MM/DD/YYYY',
+                table_rows_per_page INTEGER DEFAULT 25,
+                calibration_interval_days INTEGER DEFAULT 365,
+                calibration_warning_days INTEGER DEFAULT 30,
+                status_ok_threshold_hours INTEGER DEFAULT 12,
+                status_pending_threshold_hours INTEGER DEFAULT 24,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+            )
+        """)
+        print("  ✓ Created user_preferences table")
+
+        # Insert default preferences
+        cursor.execute("""
+            INSERT INTO user_preferences (id) VALUES (1)
+        """)
+        print("  ✓ Inserted default preferences")
+
+        conn.commit()
+        print("\nMigration completed successfully!")
+
+    except sqlite3.Error as e:
+        print(f"\nError during migration: {e}")
+        conn.rollback()
+        raise
+
+    finally:
+        conn.close()
+
+
+if __name__ == "__main__":
+    migrate_database()

backend/models.py

@@ -0,0 +1,277 @@
+from sqlalchemy import Column, String, DateTime, Boolean, Text, Date, Integer
+from datetime import datetime
+from backend.database import Base
+
+
+class Emitter(Base):
+    __tablename__ = "emitters"
+
+    id = Column(String, primary_key=True, index=True)
+    unit_type = Column(String, nullable=False)
+    last_seen = Column(DateTime, default=datetime.utcnow)
+    last_file = Column(String, nullable=False)
+    status = Column(String, nullable=False)
+    notes = Column(String, nullable=True)
+
+
+class RosterUnit(Base):
+    """
+    Roster table: represents our *intended assignment* of a unit.
+    This is editable from the GUI.
+
+    Supports multiple device types (seismograph, modem, sound_level_meter) with type-specific fields.
+    """
+    __tablename__ = "roster"
+
+    # Core fields (all device types)
+    id = Column(String, primary_key=True, index=True)
+    unit_type = Column(String, default="series3")  # Backward compatibility
+    device_type = Column(String, default="seismograph")  # "seismograph" | "modem" | "sound_level_meter"
+    deployed = Column(Boolean, default=True)
+    retired = Column(Boolean, default=False)
+    note = Column(String, nullable=True)
+    project_id = Column(String, nullable=True)
+    location = Column(String, nullable=True)  # Legacy field - use address/coordinates instead
+    address = Column(String, nullable=True)  # Human-readable address
+    coordinates = Column(String, nullable=True)  # Lat,Lon format: "34.0522,-118.2437"
+    last_updated = Column(DateTime, default=datetime.utcnow)
+
+    # Seismograph-specific fields (nullable for modems and SLMs)
+    last_calibrated = Column(Date, nullable=True)
+    next_calibration_due = Column(Date, nullable=True)
+
+    # Modem assignment (shared by seismographs and SLMs)
+    deployed_with_modem_id = Column(String, nullable=True)  # FK to another RosterUnit (device_type=modem)
+
+    # Modem-specific fields (nullable for seismographs and SLMs)
+    ip_address = Column(String, nullable=True)
+    phone_number = Column(String, nullable=True)
+    hardware_model = Column(String, nullable=True)
+
+    # Sound Level Meter-specific fields (nullable for seismographs and modems)
+    slm_host = Column(String, nullable=True)  # Device IP or hostname
+    slm_tcp_port = Column(Integer, nullable=True)  # TCP control port (default 2255)
+    slm_ftp_port = Column(Integer, nullable=True)  # FTP data retrieval port (default 21)
+    slm_model = Column(String, nullable=True)  # NL-43, NL-53, etc.
+    slm_serial_number = Column(String, nullable=True)  # Device serial number
+    slm_frequency_weighting = Column(String, nullable=True)  # A, C, Z
+    slm_time_weighting = Column(String, nullable=True)  # F (Fast), S (Slow), I (Impulse)
+    slm_measurement_range = Column(String, nullable=True)  # e.g., "30-130 dB"
+    slm_last_check = Column(DateTime, nullable=True)  # Last communication check
+
+
+class IgnoredUnit(Base):
+    """
+    Ignored units: units that report but should be filtered out from unknown emitters.
+    Used to suppress noise from old projects.
+    """
+    __tablename__ = "ignored_units"
+
+    id = Column(String, primary_key=True, index=True)
+    reason = Column(String, nullable=True)
+    ignored_at = Column(DateTime, default=datetime.utcnow)
+
+
+class UnitHistory(Base):
+    """
+    Unit history: complete timeline of changes to each unit.
+    Tracks note changes, status changes, deployment/benched events, and more.
+    """
+    __tablename__ = "unit_history"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    unit_id = Column(String, nullable=False, index=True)  # FK to RosterUnit.id
+    change_type = Column(String, nullable=False)  # note_change, deployed_change, retired_change, etc.
+    field_name = Column(String, nullable=True)  # Which field changed
+    old_value = Column(Text, nullable=True)  # Previous value
+    new_value = Column(Text, nullable=True)  # New value
+    changed_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    source = Column(String, default="manual")  # manual, csv_import, telemetry, offline_sync
+    notes = Column(Text, nullable=True)  # Optional reason/context for the change
+
+
+class UserPreferences(Base):
+    """
+    User preferences: persistent storage for application settings.
+    Single-row table (id=1) to store global user preferences.
+    """
+    __tablename__ = "user_preferences"
+
+    id = Column(Integer, primary_key=True, default=1)
+    timezone = Column(String, default="America/New_York")
+    theme = Column(String, default="auto")  # auto, light, dark
+    auto_refresh_interval = Column(Integer, default=10)  # seconds
+    date_format = Column(String, default="MM/DD/YYYY")
+    table_rows_per_page = Column(Integer, default=25)
+    calibration_interval_days = Column(Integer, default=365)
+    calibration_warning_days = Column(Integer, default=30)
+    status_ok_threshold_hours = Column(Integer, default=12)
+    status_pending_threshold_hours = Column(Integer, default=24)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+# ============================================================================
+# Project Management System
+# ============================================================================
+
+class ProjectType(Base):
+    """
+    Project type templates: defines available project types and their capabilities.
+    Pre-populated with: sound_monitoring, vibration_monitoring, combined.
+    """
+    __tablename__ = "project_types"
+
+    id = Column(String, primary_key=True)  # sound_monitoring, vibration_monitoring, combined
+    name = Column(String, nullable=False, unique=True)  # "Sound Monitoring", "Vibration Monitoring"
+    description = Column(Text, nullable=True)
+    icon = Column(String, nullable=True)  # Icon identifier for UI
+    supports_sound = Column(Boolean, default=False)  # Enables SLM features
+    supports_vibration = Column(Boolean, default=False)  # Enables seismograph features
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+
+class Project(Base):
+    """
+    Projects: top-level organization for monitoring work.
+    Type-aware to enable/disable features based on project_type_id.
+    """
+    __tablename__ = "projects"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    name = Column(String, nullable=False, unique=True)
+    description = Column(Text, nullable=True)
+    project_type_id = Column(String, nullable=False)  # FK to ProjectType.id
+    status = Column(String, default="active")  # active, completed, archived
+
+    # Project metadata
+    client_name = Column(String, nullable=True)
+    site_address = Column(String, nullable=True)
+    site_coordinates = Column(String, nullable=True)  # "lat,lon"
+    start_date = Column(Date, nullable=True)
+    end_date = Column(Date, nullable=True)
+
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class MonitoringLocation(Base):
+    """
+    Monitoring locations: generic location for monitoring activities.
+    Can be NRL (Noise Recording Location) for sound projects,
+    or monitoring point for vibration projects.
+    """
+    __tablename__ = "monitoring_locations"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    project_id = Column(String, nullable=False, index=True)  # FK to Project.id
+    location_type = Column(String, nullable=False)  # "sound" | "vibration"
+
+    name = Column(String, nullable=False)  # NRL-001, VP-North, etc.
+    description = Column(Text, nullable=True)
+    coordinates = Column(String, nullable=True)  # "lat,lon"
+    address = Column(String, nullable=True)
+
+    # Type-specific metadata stored as JSON
+    # For sound: {"ambient_conditions": "urban", "expected_sources": ["traffic"]}
+    # For vibration: {"ground_type": "bedrock", "depth": "10m"}
+    location_metadata = Column(Text, nullable=True)
+
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class UnitAssignment(Base):
+    """
+    Unit assignments: links devices (SLMs or seismographs) to monitoring locations.
+    Supports temporary assignments with assigned_until.
+    """
+    __tablename__ = "unit_assignments"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    unit_id = Column(String, nullable=False, index=True)  # FK to RosterUnit.id
+    location_id = Column(String, nullable=False, index=True)  # FK to MonitoringLocation.id
+
+    assigned_at = Column(DateTime, default=datetime.utcnow)
+    assigned_until = Column(DateTime, nullable=True)  # Null = indefinite
+    status = Column(String, default="active")  # active, completed, cancelled
+    notes = Column(Text, nullable=True)
+
+    # Denormalized for efficient queries
+    device_type = Column(String, nullable=False)  # sound_level_meter | seismograph
+    project_id = Column(String, nullable=False, index=True)  # FK to Project.id
+
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+
+class ScheduledAction(Base):
+    """
+    Scheduled actions: automation for recording start/stop/download.
+    Terra-View executes these by calling SLMM or SFM endpoints.
+    """
+    __tablename__ = "scheduled_actions"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    project_id = Column(String, nullable=False, index=True)  # FK to Project.id
+    location_id = Column(String, nullable=False, index=True)  # FK to MonitoringLocation.id
+    unit_id = Column(String, nullable=True, index=True)  # FK to RosterUnit.id (nullable if location-based)
+
+    action_type = Column(String, nullable=False)  # start, stop, download, calibrate
+    device_type = Column(String, nullable=False)  # sound_level_meter | seismograph
+
+    scheduled_time = Column(DateTime, nullable=False, index=True)
+    executed_at = Column(DateTime, nullable=True)
+    execution_status = Column(String, default="pending")  # pending, completed, failed, cancelled
+
+    # Response from device module (SLMM or SFM)
+    module_response = Column(Text, nullable=True)  # JSON
+    error_message = Column(Text, nullable=True)
+
+    notes = Column(Text, nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+
+class RecordingSession(Base):
+    """
+    Recording sessions: tracks actual monitoring sessions.
+    Created when recording starts, updated when it stops.
+    """
+    __tablename__ = "recording_sessions"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    project_id = Column(String, nullable=False, index=True)  # FK to Project.id
+    location_id = Column(String, nullable=False, index=True)  # FK to MonitoringLocation.id
+    unit_id = Column(String, nullable=False, index=True)  # FK to RosterUnit.id
+
+    session_type = Column(String, nullable=False)  # sound | vibration
+    started_at = Column(DateTime, nullable=False)
+    stopped_at = Column(DateTime, nullable=True)
+    duration_seconds = Column(Integer, nullable=True)
+    status = Column(String, default="recording")  # recording, completed, failed
+
+    # Snapshot of device configuration at recording time
+    session_metadata = Column(Text, nullable=True)  # JSON
+
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class DataFile(Base):
+    """
+    Data files: references to recorded data files.
+    Terra-View tracks file metadata; actual files stored in data/Projects/ directory.
+    """
+    __tablename__ = "data_files"
+
+    id = Column(String, primary_key=True, index=True)  # UUID
+    session_id = Column(String, nullable=False, index=True)  # FK to RecordingSession.id
+
+    file_path = Column(String, nullable=False)  # Relative to data/Projects/
+    file_type = Column(String, nullable=False)  # wav, csv, mseed, json
+    file_size_bytes = Column(Integer, nullable=True)
+    downloaded_at = Column(DateTime, nullable=True)
+    checksum = Column(String, nullable=True)  # SHA256 or MD5
+
+    # Additional file metadata
+    file_metadata = Column(Text, nullable=True)  # JSON
+
+    created_at = Column(DateTime, default=datetime.utcnow)

backend/routers/activity.py

@@ -4,8 +4,8 @@ from sqlalchemy import desc
 from pathlib import Path
 from datetime import datetime, timedelta, timezone
 from typing import List, Dict, Any
-from app.seismo.database import get_db
-from app.seismo.models import UnitHistory, Emitter, RosterUnit
+from backend.database import get_db
+from backend.models import UnitHistory, Emitter, RosterUnit
 
 router = APIRouter(prefix="/api", tags=["activity"])
 

backend/routers/dashboard.py

@@ -1,10 +1,10 @@
 from fastapi import APIRouter, Request, Depends
 from fastapi.templating import Jinja2Templates
 
-from app.seismo.services.snapshot import emit_status_snapshot
+from backend.services.snapshot import emit_status_snapshot
 
 router = APIRouter()
-templates = Jinja2Templates(directory="app/ui/templates")
+templates = Jinja2Templates(directory="templates")
 
 
 @router.get("/dashboard/active")

backend/routers/dashboard_tabs.py

@@ -2,8 +2,8 @@
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 
-from app.seismo.database import get_db
-from app.seismo.services.snapshot import emit_status_snapshot
+from backend.database import get_db
+from backend.services.snapshot import emit_status_snapshot
 
 router = APIRouter(prefix="/dashboard", tags=["dashboard-tabs"])
 

backend/routers/photos.py

@@ -8,8 +8,8 @@ import shutil
 from PIL import Image
 from PIL.ExifTags import TAGS, GPSTAGS
 from sqlalchemy.orm import Session
-from app.seismo.database import get_db
-from app.seismo.models import RosterUnit
+from backend.database import get_db
+from backend.models import RosterUnit
 
 router = APIRouter(prefix="/api", tags=["photos"])
 

backend/routers/project_locations.py

@@ -0,0 +1,488 @@
+"""
+Project Locations Router
+
+Handles monitoring locations (NRLs for sound, monitoring points for vibration)
+and unit assignments within projects.
+"""
+
+from fastapi import APIRouter, Request, Depends, HTTPException, Query
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse, JSONResponse
+from sqlalchemy.orm import Session
+from sqlalchemy import and_, or_
+from datetime import datetime
+from typing import Optional
+import uuid
+import json
+
+from backend.database import get_db
+from backend.models import (
+    Project,
+    ProjectType,
+    MonitoringLocation,
+    UnitAssignment,
+    RosterUnit,
+    RecordingSession,
+)
+
+router = APIRouter(prefix="/api/projects/{project_id}", tags=["project-locations"])
+templates = Jinja2Templates(directory="templates")
+
+
+# ============================================================================
+# Monitoring Locations CRUD
+# ============================================================================
+
+@router.get("/locations", response_class=HTMLResponse)
+async def get_project_locations(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    location_type: Optional[str] = Query(None),
+):
+    """
+    Get all monitoring locations for a project.
+    Returns HTML partial with location list.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    query = db.query(MonitoringLocation).filter_by(project_id=project_id)
+
+    # Filter by type if provided
+    if location_type:
+        query = query.filter_by(location_type=location_type)
+
+    locations = query.order_by(MonitoringLocation.name).all()
+
+    # Enrich with assignment info
+    locations_data = []
+    for location in locations:
+        # Get active assignment
+        assignment = db.query(UnitAssignment).filter(
+            and_(
+                UnitAssignment.location_id == location.id,
+                UnitAssignment.status == "active",
+            )
+        ).first()
+
+        assigned_unit = None
+        if assignment:
+            assigned_unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+
+        # Count recording sessions
+        session_count = db.query(RecordingSession).filter_by(
+            location_id=location.id
+        ).count()
+
+        locations_data.append({
+            "location": location,
+            "assignment": assignment,
+            "assigned_unit": assigned_unit,
+            "session_count": session_count,
+        })
+
+    return templates.TemplateResponse("partials/projects/location_list.html", {
+        "request": request,
+        "project": project,
+        "locations": locations_data,
+    })
+
+
+@router.post("/locations/create")
+async def create_location(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Create a new monitoring location within a project.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    form_data = await request.form()
+
+    location = MonitoringLocation(
+        id=str(uuid.uuid4()),
+        project_id=project_id,
+        location_type=form_data.get("location_type"),
+        name=form_data.get("name"),
+        description=form_data.get("description"),
+        coordinates=form_data.get("coordinates"),
+        address=form_data.get("address"),
+        location_metadata=form_data.get("location_metadata"),  # JSON string
+    )
+
+    db.add(location)
+    db.commit()
+    db.refresh(location)
+
+    return JSONResponse({
+        "success": True,
+        "location_id": location.id,
+        "message": f"Location '{location.name}' created successfully",
+    })
+
+
+@router.put("/locations/{location_id}")
+async def update_location(
+    project_id: str,
+    location_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Update a monitoring location.
+    """
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id,
+    ).first()
+
+    if not location:
+        raise HTTPException(status_code=404, detail="Location not found")
+
+    data = await request.json()
+
+    # Update fields if provided
+    if "name" in data:
+        location.name = data["name"]
+    if "description" in data:
+        location.description = data["description"]
+    if "location_type" in data:
+        location.location_type = data["location_type"]
+    if "coordinates" in data:
+        location.coordinates = data["coordinates"]
+    if "address" in data:
+        location.address = data["address"]
+    if "location_metadata" in data:
+        location.location_metadata = data["location_metadata"]
+
+    location.updated_at = datetime.utcnow()
+
+    db.commit()
+
+    return {"success": True, "message": "Location updated successfully"}
+
+
+@router.delete("/locations/{location_id}")
+async def delete_location(
+    project_id: str,
+    location_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Delete a monitoring location.
+    """
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id,
+    ).first()
+
+    if not location:
+        raise HTTPException(status_code=404, detail="Location not found")
+
+    # Check if location has active assignments
+    active_assignments = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.location_id == location_id,
+            UnitAssignment.status == "active",
+        )
+    ).count()
+
+    if active_assignments > 0:
+        raise HTTPException(
+            status_code=400,
+            detail="Cannot delete location with active unit assignments. Unassign units first.",
+        )
+
+    db.delete(location)
+    db.commit()
+
+    return {"success": True, "message": "Location deleted successfully"}
+
+
+# ============================================================================
+# Unit Assignments
+# ============================================================================
+
+@router.get("/assignments", response_class=HTMLResponse)
+async def get_project_assignments(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    status: Optional[str] = Query("active"),
+):
+    """
+    Get all unit assignments for a project.
+    Returns HTML partial with assignment list.
+    """
+    query = db.query(UnitAssignment).filter_by(project_id=project_id)
+
+    if status:
+        query = query.filter_by(status=status)
+
+    assignments = query.order_by(UnitAssignment.assigned_at.desc()).all()
+
+    # Enrich with unit and location details
+    assignments_data = []
+    for assignment in assignments:
+        unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+        location = db.query(MonitoringLocation).filter_by(id=assignment.location_id).first()
+
+        assignments_data.append({
+            "assignment": assignment,
+            "unit": unit,
+            "location": location,
+        })
+
+    return templates.TemplateResponse("partials/projects/assignment_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "assignments": assignments_data,
+    })
+
+
+@router.post("/locations/{location_id}/assign")
+async def assign_unit_to_location(
+    project_id: str,
+    location_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Assign a unit to a monitoring location.
+    """
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id,
+    ).first()
+
+    if not location:
+        raise HTTPException(status_code=404, detail="Location not found")
+
+    form_data = await request.form()
+    unit_id = form_data.get("unit_id")
+
+    # Verify unit exists and matches location type
+    unit = db.query(RosterUnit).filter_by(id=unit_id).first()
+    if not unit:
+        raise HTTPException(status_code=404, detail="Unit not found")
+
+    # Check device type matches location type
+    expected_device_type = "sound_level_meter" if location.location_type == "sound" else "seismograph"
+    if unit.device_type != expected_device_type:
+        raise HTTPException(
+            status_code=400,
+            detail=f"Unit type '{unit.device_type}' does not match location type '{location.location_type}'",
+        )
+
+    # Check if location already has an active assignment
+    existing_assignment = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.location_id == location_id,
+            UnitAssignment.status == "active",
+        )
+    ).first()
+
+    if existing_assignment:
+        raise HTTPException(
+            status_code=400,
+            detail=f"Location already has an active unit assignment ({existing_assignment.unit_id}). Unassign first.",
+        )
+
+    # Create new assignment
+    assigned_until_str = form_data.get("assigned_until")
+    assigned_until = datetime.fromisoformat(assigned_until_str) if assigned_until_str else None
+
+    assignment = UnitAssignment(
+        id=str(uuid.uuid4()),
+        unit_id=unit_id,
+        location_id=location_id,
+        project_id=project_id,
+        device_type=unit.device_type,
+        assigned_until=assigned_until,
+        status="active",
+        notes=form_data.get("notes"),
+    )
+
+    db.add(assignment)
+    db.commit()
+    db.refresh(assignment)
+
+    return JSONResponse({
+        "success": True,
+        "assignment_id": assignment.id,
+        "message": f"Unit '{unit_id}' assigned to '{location.name}'",
+    })
+
+
+@router.post("/assignments/{assignment_id}/unassign")
+async def unassign_unit(
+    project_id: str,
+    assignment_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Unassign a unit from a location.
+    """
+    assignment = db.query(UnitAssignment).filter_by(
+        id=assignment_id,
+        project_id=project_id,
+    ).first()
+
+    if not assignment:
+        raise HTTPException(status_code=404, detail="Assignment not found")
+
+    # Check if there are active recording sessions
+    active_sessions = db.query(RecordingSession).filter(
+        and_(
+            RecordingSession.location_id == assignment.location_id,
+            RecordingSession.unit_id == assignment.unit_id,
+            RecordingSession.status == "recording",
+        )
+    ).count()
+
+    if active_sessions > 0:
+        raise HTTPException(
+            status_code=400,
+            detail="Cannot unassign unit with active recording sessions. Stop recording first.",
+        )
+
+    assignment.status = "completed"
+    assignment.assigned_until = datetime.utcnow()
+
+    db.commit()
+
+    return {"success": True, "message": "Unit unassigned successfully"}
+
+
+# ============================================================================
+# Available Units for Assignment
+# ============================================================================
+
+@router.get("/available-units", response_class=JSONResponse)
+async def get_available_units(
+    project_id: str,
+    location_type: str = Query(...),
+    db: Session = Depends(get_db),
+):
+    """
+    Get list of available units for assignment to a location.
+    Filters by device type matching the location type.
+    """
+    # Determine required device type
+    required_device_type = "sound_level_meter" if location_type == "sound" else "seismograph"
+
+    # Get all units of the required type that are deployed and not retired
+    all_units = db.query(RosterUnit).filter(
+        and_(
+            RosterUnit.device_type == required_device_type,
+            RosterUnit.deployed == True,
+            RosterUnit.retired == False,
+        )
+    ).all()
+
+    # Filter out units that already have active assignments
+    assigned_unit_ids = db.query(UnitAssignment.unit_id).filter(
+        UnitAssignment.status == "active"
+    ).distinct().all()
+    assigned_unit_ids = [uid[0] for uid in assigned_unit_ids]
+
+    available_units = [
+        {
+            "id": unit.id,
+            "device_type": unit.device_type,
+            "location": unit.address or unit.location,
+            "model": unit.slm_model if unit.device_type == "sound_level_meter" else unit.unit_type,
+        }
+        for unit in all_units
+        if unit.id not in assigned_unit_ids
+    ]
+
+    return available_units
+
+
+# ============================================================================
+# NRL-specific endpoints for detail page
+# ============================================================================
+
+@router.get("/nrl/{location_id}/sessions", response_class=HTMLResponse)
+async def get_nrl_sessions(
+    project_id: str,
+    location_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Get recording sessions for a specific NRL.
+    Returns HTML partial with session list.
+    """
+    from backend.models import RecordingSession, RosterUnit
+
+    sessions = db.query(RecordingSession).filter_by(
+        location_id=location_id
+    ).order_by(RecordingSession.started_at.desc()).all()
+
+    # Enrich with unit details
+    sessions_data = []
+    for session in sessions:
+        unit = None
+        if session.unit_id:
+            unit = db.query(RosterUnit).filter_by(id=session.unit_id).first()
+
+        sessions_data.append({
+            "session": session,
+            "unit": unit,
+        })
+
+    return templates.TemplateResponse("partials/projects/session_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "location_id": location_id,
+        "sessions": sessions_data,
+    })
+
+
+@router.get("/nrl/{location_id}/files", response_class=HTMLResponse)
+async def get_nrl_files(
+    project_id: str,
+    location_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Get data files for a specific NRL.
+    Returns HTML partial with file list.
+    """
+    from backend.models import DataFile, RecordingSession
+
+    # Join DataFile with RecordingSession to filter by location_id
+    files = db.query(DataFile).join(
+        RecordingSession,
+        DataFile.session_id == RecordingSession.id
+    ).filter(
+        RecordingSession.location_id == location_id
+    ).order_by(DataFile.created_at.desc()).all()
+
+    # Enrich with session details
+    files_data = []
+    for file in files:
+        session = None
+        if file.session_id:
+            session = db.query(RecordingSession).filter_by(id=file.session_id).first()
+
+        files_data.append({
+            "file": file,
+            "session": session,
+        })
+
+    return templates.TemplateResponse("partials/projects/file_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "location_id": location_id,
+        "files": files_data,
+    })

backend/routers/projects.py

@@ -0,0 +1,888 @@
+"""
+Projects Router
+
+Provides API endpoints for the Projects system:
+- Project CRUD operations
+- Project dashboards
+- Project statistics
+- Type-aware features
+"""
+
+from fastapi import APIRouter, Request, Depends, HTTPException, Query
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse, JSONResponse
+from sqlalchemy.orm import Session
+from sqlalchemy import func, and_
+from datetime import datetime, timedelta
+from typing import Optional
+import uuid
+import json
+import logging
+
+from backend.database import get_db
+from backend.models import (
+    Project,
+    ProjectType,
+    MonitoringLocation,
+    UnitAssignment,
+    RecordingSession,
+    ScheduledAction,
+    RosterUnit,
+)
+
+router = APIRouter(prefix="/api/projects", tags=["projects"])
+templates = Jinja2Templates(directory="templates")
+logger = logging.getLogger(__name__)
+
+
+# ============================================================================
+# Project List & Overview
+# ============================================================================
+
+@router.get("/list", response_class=HTMLResponse)
+async def get_projects_list(
+    request: Request,
+    db: Session = Depends(get_db),
+    status: Optional[str] = Query(None),
+    project_type_id: Optional[str] = Query(None),
+    view: Optional[str] = Query(None),
+):
+    """
+    Get list of all projects.
+    Returns HTML partial with project cards.
+    """
+    query = db.query(Project)
+
+    # Filter by status if provided
+    if status:
+        query = query.filter(Project.status == status)
+
+    # Filter by project type if provided
+    if project_type_id:
+        query = query.filter(Project.project_type_id == project_type_id)
+
+    projects = query.order_by(Project.created_at.desc()).all()
+
+    # Enrich each project with stats
+    projects_data = []
+    for project in projects:
+        # Get project type
+        project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first()
+
+        # Count locations
+        location_count = db.query(func.count(MonitoringLocation.id)).filter_by(
+            project_id=project.id
+        ).scalar()
+
+        # Count assigned units
+        unit_count = db.query(func.count(UnitAssignment.id)).filter(
+            and_(
+                UnitAssignment.project_id == project.id,
+                UnitAssignment.status == "active",
+            )
+        ).scalar()
+
+        # Count active sessions
+        active_session_count = db.query(func.count(RecordingSession.id)).filter(
+            and_(
+                RecordingSession.project_id == project.id,
+                RecordingSession.status == "recording",
+            )
+        ).scalar()
+
+        projects_data.append({
+            "project": project,
+            "project_type": project_type,
+            "location_count": location_count,
+            "unit_count": unit_count,
+            "active_session_count": active_session_count,
+        })
+
+    template_name = "partials/projects/project_list.html"
+    if view == "compact":
+        template_name = "partials/projects/project_list_compact.html"
+
+    return templates.TemplateResponse(template_name, {
+        "request": request,
+        "projects": projects_data,
+    })
+
+
+@router.get("/stats", response_class=HTMLResponse)
+async def get_projects_stats(request: Request, db: Session = Depends(get_db)):
+    """
+    Get summary statistics for projects overview.
+    Returns HTML partial with stat cards.
+    """
+    # Count projects by status
+    total_projects = db.query(func.count(Project.id)).scalar()
+    active_projects = db.query(func.count(Project.id)).filter_by(status="active").scalar()
+    completed_projects = db.query(func.count(Project.id)).filter_by(status="completed").scalar()
+
+    # Count total locations across all projects
+    total_locations = db.query(func.count(MonitoringLocation.id)).scalar()
+
+    # Count assigned units
+    assigned_units = db.query(func.count(UnitAssignment.id)).filter_by(
+        status="active"
+    ).scalar()
+
+    # Count active recording sessions
+    active_sessions = db.query(func.count(RecordingSession.id)).filter_by(
+        status="recording"
+    ).scalar()
+
+    return templates.TemplateResponse("partials/projects/project_stats.html", {
+        "request": request,
+        "total_projects": total_projects,
+        "active_projects": active_projects,
+        "completed_projects": completed_projects,
+        "total_locations": total_locations,
+        "assigned_units": assigned_units,
+        "active_sessions": active_sessions,
+    })
+
+
+# ============================================================================
+# Project CRUD
+# ============================================================================
+
+@router.post("/create")
+async def create_project(request: Request, db: Session = Depends(get_db)):
+    """
+    Create a new project.
+    Expects form data with project details.
+    """
+    form_data = await request.form()
+
+    project = Project(
+        id=str(uuid.uuid4()),
+        name=form_data.get("name"),
+        description=form_data.get("description"),
+        project_type_id=form_data.get("project_type_id"),
+        status="active",
+        client_name=form_data.get("client_name"),
+        site_address=form_data.get("site_address"),
+        site_coordinates=form_data.get("site_coordinates"),
+        start_date=datetime.fromisoformat(form_data.get("start_date")) if form_data.get("start_date") else None,
+        end_date=datetime.fromisoformat(form_data.get("end_date")) if form_data.get("end_date") else None,
+    )
+
+    db.add(project)
+    db.commit()
+    db.refresh(project)
+
+    return JSONResponse({
+        "success": True,
+        "project_id": project.id,
+        "message": f"Project '{project.name}' created successfully",
+    })
+
+
+@router.get("/{project_id}")
+async def get_project(project_id: str, db: Session = Depends(get_db)):
+    """
+    Get project details by ID.
+    Returns JSON with full project data.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first()
+
+    return {
+        "id": project.id,
+        "name": project.name,
+        "description": project.description,
+        "project_type_id": project.project_type_id,
+        "project_type_name": project_type.name if project_type else None,
+        "status": project.status,
+        "client_name": project.client_name,
+        "site_address": project.site_address,
+        "site_coordinates": project.site_coordinates,
+        "start_date": project.start_date.isoformat() if project.start_date else None,
+        "end_date": project.end_date.isoformat() if project.end_date else None,
+        "created_at": project.created_at.isoformat(),
+        "updated_at": project.updated_at.isoformat(),
+    }
+
+
+@router.put("/{project_id}")
+async def update_project(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Update project details.
+    Expects JSON body with fields to update.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    data = await request.json()
+
+    # Update fields if provided
+    if "name" in data:
+        project.name = data["name"]
+    if "description" in data:
+        project.description = data["description"]
+    if "status" in data:
+        project.status = data["status"]
+    if "client_name" in data:
+        project.client_name = data["client_name"]
+    if "site_address" in data:
+        project.site_address = data["site_address"]
+    if "site_coordinates" in data:
+        project.site_coordinates = data["site_coordinates"]
+    if "start_date" in data:
+        project.start_date = datetime.fromisoformat(data["start_date"]) if data["start_date"] else None
+    if "end_date" in data:
+        project.end_date = datetime.fromisoformat(data["end_date"]) if data["end_date"] else None
+
+    project.updated_at = datetime.utcnow()
+
+    db.commit()
+
+    return {"success": True, "message": "Project updated successfully"}
+
+
+@router.delete("/{project_id}")
+async def delete_project(project_id: str, db: Session = Depends(get_db)):
+    """
+    Delete a project (soft delete by archiving).
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    project.status = "archived"
+    project.updated_at = datetime.utcnow()
+
+    db.commit()
+
+    return {"success": True, "message": "Project archived successfully"}
+
+
+# ============================================================================
+# Project Dashboard Data
+# ============================================================================
+
+@router.get("/{project_id}/dashboard", response_class=HTMLResponse)
+async def get_project_dashboard(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Get project dashboard data.
+    Returns HTML partial with project summary.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first()
+
+    # Get locations
+    locations = db.query(MonitoringLocation).filter_by(project_id=project_id).all()
+
+    # Get assigned units with details
+    assignments = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.project_id == project_id,
+            UnitAssignment.status == "active",
+        )
+    ).all()
+
+    assigned_units = []
+    for assignment in assignments:
+        unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+        if unit:
+            assigned_units.append({
+                "assignment": assignment,
+                "unit": unit,
+            })
+
+    # Get active recording sessions
+    active_sessions = db.query(RecordingSession).filter(
+        and_(
+            RecordingSession.project_id == project_id,
+            RecordingSession.status == "recording",
+        )
+    ).all()
+
+    # Get completed sessions count
+    completed_sessions_count = db.query(func.count(RecordingSession.id)).filter(
+        and_(
+            RecordingSession.project_id == project_id,
+            RecordingSession.status == "completed",
+        )
+    ).scalar()
+
+    # Get upcoming scheduled actions
+    upcoming_actions = db.query(ScheduledAction).filter(
+        and_(
+            ScheduledAction.project_id == project_id,
+            ScheduledAction.execution_status == "pending",
+            ScheduledAction.scheduled_time > datetime.utcnow(),
+        )
+    ).order_by(ScheduledAction.scheduled_time).limit(5).all()
+
+    return templates.TemplateResponse("partials/projects/project_dashboard.html", {
+        "request": request,
+        "project": project,
+        "project_type": project_type,
+        "locations": locations,
+        "assigned_units": assigned_units,
+        "active_sessions": active_sessions,
+        "completed_sessions_count": completed_sessions_count,
+        "upcoming_actions": upcoming_actions,
+    })
+
+
+# ============================================================================
+# Project Types
+# ============================================================================
+
+@router.get("/{project_id}/header", response_class=JSONResponse)
+async def get_project_header(project_id: str, db: Session = Depends(get_db)):
+    """
+    Get project header information for dynamic display.
+    Returns JSON with project name, status, and type.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first()
+
+    return JSONResponse({
+        "id": project.id,
+        "name": project.name,
+        "status": project.status,
+        "project_type_id": project.project_type_id,
+        "project_type_name": project_type.name if project_type else None,
+    })
+
+
+@router.get("/{project_id}/units", response_class=HTMLResponse)
+async def get_project_units(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Get all units assigned to this project's locations.
+    Returns HTML partial with unit list.
+    """
+    from backend.models import DataFile
+
+    # Get all assignments for this project
+    assignments = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.project_id == project_id,
+            UnitAssignment.status == "active",
+        )
+    ).all()
+
+    # Enrich with unit and location details
+    units_data = []
+    for assignment in assignments:
+        unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+        location = db.query(MonitoringLocation).filter_by(id=assignment.location_id).first()
+
+        # Count sessions for this assignment
+        session_count = db.query(func.count(RecordingSession.id)).filter_by(
+            location_id=assignment.location_id,
+            unit_id=assignment.unit_id,
+        ).scalar()
+
+        # Count files from sessions
+        file_count = db.query(func.count(DataFile.id)).join(
+            RecordingSession,
+            DataFile.session_id == RecordingSession.id
+        ).filter(
+            RecordingSession.location_id == assignment.location_id,
+            RecordingSession.unit_id == assignment.unit_id,
+        ).scalar()
+
+        # Check if currently recording
+        active_session = db.query(RecordingSession).filter(
+            and_(
+                RecordingSession.location_id == assignment.location_id,
+                RecordingSession.unit_id == assignment.unit_id,
+                RecordingSession.status == "recording",
+            )
+        ).first()
+
+        units_data.append({
+            "assignment": assignment,
+            "unit": unit,
+            "location": location,
+            "session_count": session_count,
+            "file_count": file_count,
+            "active_session": active_session,
+        })
+
+    # Get project type for label context
+    project = db.query(Project).filter_by(id=project_id).first()
+    project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first() if project else None
+
+    return templates.TemplateResponse("partials/projects/unit_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "units": units_data,
+        "project_type": project_type,
+    })
+
+
+@router.get("/{project_id}/schedules", response_class=HTMLResponse)
+async def get_project_schedules(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    status: Optional[str] = Query(None),
+):
+    """
+    Get scheduled actions for this project.
+    Returns HTML partial with schedule list.
+    Optional status filter: pending, completed, failed, cancelled
+    """
+    query = db.query(ScheduledAction).filter_by(project_id=project_id)
+
+    # Filter by status if provided
+    if status:
+        query = query.filter(ScheduledAction.execution_status == status)
+
+    schedules = query.order_by(ScheduledAction.scheduled_time.desc()).all()
+
+    # Enrich with location details
+    schedules_data = []
+    for schedule in schedules:
+        location = None
+        if schedule.location_id:
+            location = db.query(MonitoringLocation).filter_by(id=schedule.location_id).first()
+
+        schedules_data.append({
+            "schedule": schedule,
+            "location": location,
+        })
+
+    return templates.TemplateResponse("partials/projects/schedule_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "schedules": schedules_data,
+    })
+
+
+@router.get("/{project_id}/sessions", response_class=HTMLResponse)
+async def get_project_sessions(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    status: Optional[str] = Query(None),
+):
+    """
+    Get all recording sessions for this project.
+    Returns HTML partial with session list.
+    Optional status filter: recording, completed, paused, failed
+    """
+    query = db.query(RecordingSession).filter_by(project_id=project_id)
+
+    # Filter by status if provided
+    if status:
+        query = query.filter(RecordingSession.status == status)
+
+    sessions = query.order_by(RecordingSession.started_at.desc()).all()
+
+    # Enrich with unit and location details
+    sessions_data = []
+    for session in sessions:
+        unit = None
+        location = None
+
+        if session.unit_id:
+            unit = db.query(RosterUnit).filter_by(id=session.unit_id).first()
+        if session.location_id:
+            location = db.query(MonitoringLocation).filter_by(id=session.location_id).first()
+
+        sessions_data.append({
+            "session": session,
+            "unit": unit,
+            "location": location,
+        })
+
+    return templates.TemplateResponse("partials/projects/session_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "sessions": sessions_data,
+    })
+
+
+@router.get("/{project_id}/files", response_class=HTMLResponse)
+async def get_project_files(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    file_type: Optional[str] = Query(None),
+):
+    """
+    Get all data files from all sessions in this project.
+    Returns HTML partial with file list.
+    Optional file_type filter: audio, data, log, etc.
+    """
+    from backend.models import DataFile
+
+    # Join through RecordingSession to get project files
+    query = db.query(DataFile).join(
+        RecordingSession,
+        DataFile.session_id == RecordingSession.id
+    ).filter(RecordingSession.project_id == project_id)
+
+    # Filter by file type if provided
+    if file_type:
+        query = query.filter(DataFile.file_type == file_type)
+
+    files = query.order_by(DataFile.created_at.desc()).all()
+
+    # Enrich with session details
+    files_data = []
+    for file in files:
+        session = None
+        if file.session_id:
+            session = db.query(RecordingSession).filter_by(id=file.session_id).first()
+
+        files_data.append({
+            "file": file,
+            "session": session,
+        })
+
+    return templates.TemplateResponse("partials/projects/file_list.html", {
+        "request": request,
+        "project_id": project_id,
+        "files": files_data,
+    })
+
+
+@router.get("/{project_id}/ftp-browser", response_class=HTMLResponse)
+async def get_ftp_browser(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Get FTP browser interface for downloading files from assigned SLMs.
+    Returns HTML partial with FTP browser.
+    """
+    from backend.models import DataFile
+
+    # Get all assignments for this project
+    assignments = db.query(UnitAssignment).filter(
+        and_(
+            UnitAssignment.project_id == project_id,
+            UnitAssignment.status == "active",
+        )
+    ).all()
+
+    # Enrich with unit and location details
+    units_data = []
+    for assignment in assignments:
+        unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+        location = db.query(MonitoringLocation).filter_by(id=assignment.location_id).first()
+
+        # Only include SLM units
+        if unit and unit.device_type == "sound_level_meter":
+            units_data.append({
+                "assignment": assignment,
+                "unit": unit,
+                "location": location,
+            })
+
+    return templates.TemplateResponse("partials/projects/ftp_browser.html", {
+        "request": request,
+        "project_id": project_id,
+        "units": units_data,
+    })
+
+
+@router.post("/{project_id}/ftp-download-to-server")
+async def ftp_download_to_server(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Download a file from an SLM to the server via FTP.
+    Creates a DataFile record and stores the file in data/Projects/{project_id}/
+    """
+    import httpx
+    import os
+    import hashlib
+    from pathlib import Path
+    from backend.models import DataFile
+
+    data = await request.json()
+    unit_id = data.get("unit_id")
+    remote_path = data.get("remote_path")
+    location_id = data.get("location_id")
+
+    if not unit_id or not remote_path:
+        raise HTTPException(status_code=400, detail="Missing unit_id or remote_path")
+
+    # Get or create active session for this location/unit
+    session = db.query(RecordingSession).filter(
+        and_(
+            RecordingSession.project_id == project_id,
+            RecordingSession.location_id == location_id,
+            RecordingSession.unit_id == unit_id,
+            RecordingSession.status.in_(["recording", "paused"])
+        )
+    ).first()
+
+    # If no active session, create one
+    if not session:
+        session = RecordingSession(
+            id=str(uuid.uuid4()),
+            project_id=project_id,
+            location_id=location_id,
+            unit_id=unit_id,
+            status="completed",
+            started_at=datetime.utcnow(),
+            stopped_at=datetime.utcnow(),
+            notes="Auto-created for FTP download"
+        )
+        db.add(session)
+        db.commit()
+        db.refresh(session)
+
+    # Download file from SLMM
+    SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")
+
+    try:
+        async with httpx.AsyncClient(timeout=300.0) as client:
+            response = await client.post(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/ftp/download",
+                json={"remote_path": remote_path}
+            )
+
+            if not response.is_success:
+                raise HTTPException(
+                    status_code=response.status_code,
+                    detail=f"Failed to download from SLMM: {response.text}"
+                )
+
+            # Extract filename from remote_path
+            filename = os.path.basename(remote_path)
+
+            # Determine file type from extension
+            ext = os.path.splitext(filename)[1].lower()
+            file_type_map = {
+                '.wav': 'audio',
+                '.mp3': 'audio',
+                '.csv': 'data',
+                '.txt': 'data',
+                '.log': 'log',
+                '.json': 'data',
+            }
+            file_type = file_type_map.get(ext, 'data')
+
+            # Create directory structure: data/Projects/{project_id}/{session_id}/
+            project_dir = Path(f"data/Projects/{project_id}/{session.id}")
+            project_dir.mkdir(parents=True, exist_ok=True)
+
+            # Save file to disk
+            file_path = project_dir / filename
+            file_content = response.content
+
+            with open(file_path, 'wb') as f:
+                f.write(file_content)
+
+            # Calculate checksum
+            checksum = hashlib.sha256(file_content).hexdigest()
+
+            # Create DataFile record
+            data_file = DataFile(
+                id=str(uuid.uuid4()),
+                session_id=session.id,
+                file_path=str(file_path.relative_to("data")),  # Store relative to data/
+                file_type=file_type,
+                file_size_bytes=len(file_content),
+                downloaded_at=datetime.utcnow(),
+                checksum=checksum,
+                file_metadata=json.dumps({
+                    "source": "ftp",
+                    "remote_path": remote_path,
+                    "unit_id": unit_id,
+                    "location_id": location_id,
+                })
+            )
+
+            db.add(data_file)
+            db.commit()
+
+            return {
+                "success": True,
+                "message": f"Downloaded {filename} to server",
+                "file_id": data_file.id,
+                "file_path": str(file_path),
+                "file_size": len(file_content),
+            }
+
+    except httpx.TimeoutException:
+        raise HTTPException(
+            status_code=504,
+            detail="Timeout downloading file from SLM"
+        )
+    except Exception as e:
+        logger.error(f"Error downloading file to server: {e}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to download file to server: {str(e)}"
+        )
+
+
+@router.post("/{project_id}/ftp-download-folder-to-server")
+async def ftp_download_folder_to_server(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Download an entire folder from an SLM to the server via FTP as a ZIP file.
+    Creates a DataFile record and stores the ZIP in data/Projects/{project_id}/
+    """
+    import httpx
+    import os
+    import hashlib
+    from pathlib import Path
+    from backend.models import DataFile
+
+    data = await request.json()
+    unit_id = data.get("unit_id")
+    remote_path = data.get("remote_path")
+    location_id = data.get("location_id")
+
+    if not unit_id or not remote_path:
+        raise HTTPException(status_code=400, detail="Missing unit_id or remote_path")
+
+    # Get or create active session for this location/unit
+    session = db.query(RecordingSession).filter(
+        and_(
+            RecordingSession.project_id == project_id,
+            RecordingSession.location_id == location_id,
+            RecordingSession.unit_id == unit_id,
+            RecordingSession.status.in_(["recording", "paused"])
+        )
+    ).first()
+
+    # If no active session, create one
+    if not session:
+        session = RecordingSession(
+            id=str(uuid.uuid4()),
+            project_id=project_id,
+            location_id=location_id,
+            unit_id=unit_id,
+            status="completed",
+            started_at=datetime.utcnow(),
+            stopped_at=datetime.utcnow(),
+            notes="Auto-created for FTP folder download"
+        )
+        db.add(session)
+        db.commit()
+        db.refresh(session)
+
+    # Download folder from SLMM
+    SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")
+
+    try:
+        async with httpx.AsyncClient(timeout=600.0) as client:  # Longer timeout for folders
+            response = await client.post(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/ftp/download-folder",
+                json={"remote_path": remote_path}
+            )
+
+            if not response.is_success:
+                raise HTTPException(
+                    status_code=response.status_code,
+                    detail=f"Failed to download folder from SLMM: {response.text}"
+                )
+
+            # Extract folder name from remote_path
+            folder_name = os.path.basename(remote_path.rstrip('/'))
+            filename = f"{folder_name}.zip"
+
+            # Create directory structure: data/Projects/{project_id}/{session_id}/
+            project_dir = Path(f"data/Projects/{project_id}/{session.id}")
+            project_dir.mkdir(parents=True, exist_ok=True)
+
+            # Save ZIP file to disk
+            file_path = project_dir / filename
+            file_content = response.content
+
+            with open(file_path, 'wb') as f:
+                f.write(file_content)
+
+            # Calculate checksum
+            checksum = hashlib.sha256(file_content).hexdigest()
+
+            # Create DataFile record
+            data_file = DataFile(
+                id=str(uuid.uuid4()),
+                session_id=session.id,
+                file_path=str(file_path.relative_to("data")),  # Store relative to data/
+                file_type='archive',  # ZIP archives
+                file_size_bytes=len(file_content),
+                downloaded_at=datetime.utcnow(),
+                checksum=checksum,
+                file_metadata=json.dumps({
+                    "source": "ftp_folder",
+                    "remote_path": remote_path,
+                    "unit_id": unit_id,
+                    "location_id": location_id,
+                    "folder_name": folder_name,
+                })
+            )
+
+            db.add(data_file)
+            db.commit()
+
+            return {
+                "success": True,
+                "message": f"Downloaded folder {folder_name} to server as ZIP",
+                "file_id": data_file.id,
+                "file_path": str(file_path),
+                "file_size": len(file_content),
+            }
+
+    except httpx.TimeoutException:
+        raise HTTPException(
+            status_code=504,
+            detail="Timeout downloading folder from SLM (large folders may take a while)"
+        )
+    except Exception as e:
+        logger.error(f"Error downloading folder to server: {e}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to download folder to server: {str(e)}"
+        )
+
+
+# ============================================================================
+# Project Types
+# ============================================================================
+
+@router.get("/types/list", response_class=HTMLResponse)
+async def get_project_types(request: Request, db: Session = Depends(get_db)):
+    """
+    Get all available project types.
+    Returns HTML partial with project type cards.
+    """
+    project_types = db.query(ProjectType).all()
+
+    return templates.TemplateResponse("partials/projects/project_type_cards.html", {
+        "request": request,
+        "project_types": project_types,
+    })

backend/routers/roster.py

@@ -4,8 +4,8 @@ from datetime import datetime, timedelta
 from typing import Dict, Any
 import random
 
-from app.seismo.database import get_db
-from app.seismo.services.snapshot import emit_status_snapshot
+from backend.database import get_db
+from backend.services.snapshot import emit_status_snapshot
 
 router = APIRouter(prefix="/api", tags=["roster"])
 

backend/routers/roster_edit.py

@@ -8,8 +8,8 @@ import logging
 import httpx
 import os
 
-from app.seismo.database import get_db
-from app.seismo.models import RosterUnit, IgnoredUnit, Emitter, UnitHistory
+from backend.database import get_db
+from backend.models import RosterUnit, IgnoredUnit, Emitter, UnitHistory
 
 router = APIRouter(prefix="/api/roster", tags=["roster-edit"])
 logger = logging.getLogger(__name__)

backend/routers/roster_rename.py

@@ -0,0 +1,139 @@
+"""
+Roster Unit Rename Router
+
+Provides endpoint for safely renaming unit IDs across all database tables.
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, Form
+from sqlalchemy.orm import Session
+from datetime import datetime
+import logging
+
+from backend.database import get_db
+from backend.models import RosterUnit, Emitter, UnitHistory
+from backend.routers.roster_edit import record_history, sync_slm_to_slmm_cache
+
+router = APIRouter(prefix="/api/roster", tags=["roster-rename"])
+logger = logging.getLogger(__name__)
+
+
+@router.post("/rename")
+async def rename_unit(
+    old_id: str = Form(...),
+    new_id: str = Form(...),
+    db: Session = Depends(get_db)
+):
+    """
+    Rename a unit ID across all tables.
+    Updates the unit ID in roster, emitters, unit_history, and all foreign key references.
+
+    IMPORTANT: This operation updates the primary key, which affects all relationships.
+    """
+    # Validate input
+    if not old_id or not new_id:
+        raise HTTPException(status_code=400, detail="Both old_id and new_id are required")
+
+    if old_id == new_id:
+        raise HTTPException(status_code=400, detail="New ID must be different from old ID")
+
+    # Check if old unit exists
+    old_unit = db.query(RosterUnit).filter(RosterUnit.id == old_id).first()
+    if not old_unit:
+        raise HTTPException(status_code=404, detail=f"Unit '{old_id}' not found")
+
+    # Check if new ID already exists
+    existing_unit = db.query(RosterUnit).filter(RosterUnit.id == new_id).first()
+    if existing_unit:
+        raise HTTPException(status_code=409, detail=f"Unit ID '{new_id}' already exists")
+
+    device_type = old_unit.device_type
+
+    try:
+        # Record history for the rename operation (using old_id since that's still valid)
+        record_history(
+            db=db,
+            unit_id=old_id,
+            change_type="id_change",
+            field_name="id",
+            old_value=old_id,
+            new_value=new_id,
+            source="manual",
+            notes=f"Unit renamed from '{old_id}' to '{new_id}'"
+        )
+
+        # Update roster table (primary)
+        old_unit.id = new_id
+        old_unit.last_updated = datetime.utcnow()
+
+        # Update emitters table
+        emitter = db.query(Emitter).filter(Emitter.id == old_id).first()
+        if emitter:
+            emitter.id = new_id
+
+        # Update unit_history table (all entries for this unit)
+        db.query(UnitHistory).filter(UnitHistory.unit_id == old_id).update(
+            {"unit_id": new_id},
+            synchronize_session=False
+        )
+
+        # Update deployed_with_modem_id references (units that reference this as modem)
+        db.query(RosterUnit).filter(RosterUnit.deployed_with_modem_id == old_id).update(
+            {"deployed_with_modem_id": new_id},
+            synchronize_session=False
+        )
+
+        # Update unit_assignments table (if exists)
+        try:
+            from backend.models import UnitAssignment
+            db.query(UnitAssignment).filter(UnitAssignment.unit_id == old_id).update(
+                {"unit_id": new_id},
+                synchronize_session=False
+            )
+        except Exception as e:
+            logger.warning(f"Could not update unit_assignments: {e}")
+
+        # Update recording_sessions table (if exists)
+        try:
+            from backend.models import RecordingSession
+            db.query(RecordingSession).filter(RecordingSession.unit_id == old_id).update(
+                {"unit_id": new_id},
+                synchronize_session=False
+            )
+        except Exception as e:
+            logger.warning(f"Could not update recording_sessions: {e}")
+
+        # Commit all changes
+        db.commit()
+
+        # If sound level meter, sync updated config to SLMM cache
+        if device_type == "sound_level_meter":
+            logger.info(f"Syncing renamed SLM {new_id} (was {old_id}) config to SLMM cache...")
+            result = await sync_slm_to_slmm_cache(
+                unit_id=new_id,
+                host=old_unit.slm_host,
+                tcp_port=old_unit.slm_tcp_port,
+                ftp_port=old_unit.slm_ftp_port,
+                deployed_with_modem_id=old_unit.deployed_with_modem_id,
+                db=db
+            )
+
+            if not result["success"]:
+                logger.warning(f"SLMM cache sync warning for renamed unit {new_id}: {result['message']}")
+
+        logger.info(f"Successfully renamed unit '{old_id}' to '{new_id}'")
+
+        return {
+            "success": True,
+            "message": f"Successfully renamed unit from '{old_id}' to '{new_id}'",
+            "old_id": old_id,
+            "new_id": new_id,
+            "device_type": device_type
+        }
+
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Error renaming unit '{old_id}' to '{new_id}': {e}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to rename unit: {str(e)}"
+        )

backend/routers/scheduler.py

@@ -0,0 +1,409 @@
+"""
+Scheduler Router
+
+Handles scheduled actions for automated recording control.
+"""
+
+from fastapi import APIRouter, Request, Depends, HTTPException, Query
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse, JSONResponse
+from sqlalchemy.orm import Session
+from sqlalchemy import and_, or_
+from datetime import datetime, timedelta
+from typing import Optional
+import uuid
+import json
+
+from backend.database import get_db
+from backend.models import (
+    Project,
+    ScheduledAction,
+    MonitoringLocation,
+    UnitAssignment,
+    RosterUnit,
+)
+from backend.services.scheduler import get_scheduler
+
+router = APIRouter(prefix="/api/projects/{project_id}/scheduler", tags=["scheduler"])
+templates = Jinja2Templates(directory="templates")
+
+
+# ============================================================================
+# Scheduled Actions List
+# ============================================================================
+
+@router.get("/actions", response_class=HTMLResponse)
+async def get_scheduled_actions(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+    status: Optional[str] = Query(None),
+    start_date: Optional[str] = Query(None),
+    end_date: Optional[str] = Query(None),
+):
+    """
+    Get scheduled actions for a project.
+    Returns HTML partial with agenda/calendar view.
+    """
+    query = db.query(ScheduledAction).filter_by(project_id=project_id)
+
+    # Filter by status
+    if status:
+        query = query.filter_by(execution_status=status)
+    else:
+        # By default, show pending and upcoming completed/failed
+        query = query.filter(
+            or_(
+                ScheduledAction.execution_status == "pending",
+                and_(
+                    ScheduledAction.execution_status.in_(["completed", "failed"]),
+                    ScheduledAction.scheduled_time >= datetime.utcnow() - timedelta(days=7),
+                ),
+            )
+        )
+
+    # Filter by date range
+    if start_date:
+        query = query.filter(ScheduledAction.scheduled_time >= datetime.fromisoformat(start_date))
+    if end_date:
+        query = query.filter(ScheduledAction.scheduled_time <= datetime.fromisoformat(end_date))
+
+    actions = query.order_by(ScheduledAction.scheduled_time).all()
+
+    # Enrich with location and unit details
+    actions_data = []
+    for action in actions:
+        location = db.query(MonitoringLocation).filter_by(id=action.location_id).first()
+
+        unit = None
+        if action.unit_id:
+            unit = db.query(RosterUnit).filter_by(id=action.unit_id).first()
+        else:
+            # Get from assignment
+            assignment = db.query(UnitAssignment).filter(
+                and_(
+                    UnitAssignment.location_id == action.location_id,
+                    UnitAssignment.status == "active",
+                )
+            ).first()
+            if assignment:
+                unit = db.query(RosterUnit).filter_by(id=assignment.unit_id).first()
+
+        actions_data.append({
+            "action": action,
+            "location": location,
+            "unit": unit,
+        })
+
+    return templates.TemplateResponse("partials/projects/scheduler_agenda.html", {
+        "request": request,
+        "project_id": project_id,
+        "actions": actions_data,
+    })
+
+
+# ============================================================================
+# Create Scheduled Action
+# ============================================================================
+
+@router.post("/actions/create")
+async def create_scheduled_action(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Create a new scheduled action.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    form_data = await request.form()
+
+    location_id = form_data.get("location_id")
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id,
+    ).first()
+
+    if not location:
+        raise HTTPException(status_code=404, detail="Location not found")
+
+    # Determine device type from location
+    device_type = "sound_level_meter" if location.location_type == "sound" else "seismograph"
+
+    # Get unit_id (optional - can be determined from assignment at execution time)
+    unit_id = form_data.get("unit_id")
+
+    action = ScheduledAction(
+        id=str(uuid.uuid4()),
+        project_id=project_id,
+        location_id=location_id,
+        unit_id=unit_id,
+        action_type=form_data.get("action_type"),
+        device_type=device_type,
+        scheduled_time=datetime.fromisoformat(form_data.get("scheduled_time")),
+        execution_status="pending",
+        notes=form_data.get("notes"),
+    )
+
+    db.add(action)
+    db.commit()
+    db.refresh(action)
+
+    return JSONResponse({
+        "success": True,
+        "action_id": action.id,
+        "message": f"Scheduled action '{action.action_type}' created for {action.scheduled_time}",
+    })
+
+
+# ============================================================================
+# Schedule Recording Session
+# ============================================================================
+
+@router.post("/schedule-session")
+async def schedule_recording_session(
+    project_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Schedule a complete recording session (start + stop).
+    Creates two scheduled actions: start and stop.
+    """
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    form_data = await request.form()
+
+    location_id = form_data.get("location_id")
+    location = db.query(MonitoringLocation).filter_by(
+        id=location_id,
+        project_id=project_id,
+    ).first()
+
+    if not location:
+        raise HTTPException(status_code=404, detail="Location not found")
+
+    device_type = "sound_level_meter" if location.location_type == "sound" else "seismograph"
+    unit_id = form_data.get("unit_id")
+
+    start_time = datetime.fromisoformat(form_data.get("start_time"))
+    duration_minutes = int(form_data.get("duration_minutes", 60))
+    stop_time = start_time + timedelta(minutes=duration_minutes)
+
+    # Create START action
+    start_action = ScheduledAction(
+        id=str(uuid.uuid4()),
+        project_id=project_id,
+        location_id=location_id,
+        unit_id=unit_id,
+        action_type="start",
+        device_type=device_type,
+        scheduled_time=start_time,
+        execution_status="pending",
+        notes=form_data.get("notes"),
+    )
+
+    # Create STOP action
+    stop_action = ScheduledAction(
+        id=str(uuid.uuid4()),
+        project_id=project_id,
+        location_id=location_id,
+        unit_id=unit_id,
+        action_type="stop",
+        device_type=device_type,
+        scheduled_time=stop_time,
+        execution_status="pending",
+        notes=f"Auto-stop after {duration_minutes} minutes",
+    )
+
+    db.add(start_action)
+    db.add(stop_action)
+    db.commit()
+
+    return JSONResponse({
+        "success": True,
+        "start_action_id": start_action.id,
+        "stop_action_id": stop_action.id,
+        "message": f"Recording session scheduled from {start_time} to {stop_time}",
+    })
+
+
+# ============================================================================
+# Update/Cancel Scheduled Action
+# ============================================================================
+
+@router.put("/actions/{action_id}")
+async def update_scheduled_action(
+    project_id: str,
+    action_id: str,
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    Update a scheduled action (only if not yet executed).
+    """
+    action = db.query(ScheduledAction).filter_by(
+        id=action_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status != "pending":
+        raise HTTPException(
+            status_code=400,
+            detail="Cannot update action that has already been executed",
+        )
+
+    data = await request.json()
+
+    if "scheduled_time" in data:
+        action.scheduled_time = datetime.fromisoformat(data["scheduled_time"])
+    if "notes" in data:
+        action.notes = data["notes"]
+
+    db.commit()
+
+    return {"success": True, "message": "Action updated successfully"}
+
+
+@router.post("/actions/{action_id}/cancel")
+async def cancel_scheduled_action(
+    project_id: str,
+    action_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Cancel a pending scheduled action.
+    """
+    action = db.query(ScheduledAction).filter_by(
+        id=action_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status != "pending":
+        raise HTTPException(
+            status_code=400,
+            detail="Can only cancel pending actions",
+        )
+
+    action.execution_status = "cancelled"
+    db.commit()
+
+    return {"success": True, "message": "Action cancelled successfully"}
+
+
+@router.delete("/actions/{action_id}")
+async def delete_scheduled_action(
+    project_id: str,
+    action_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Delete a scheduled action (only if pending or cancelled).
+    """
+    action = db.query(ScheduledAction).filter_by(
+        id=action_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status not in ["pending", "cancelled"]:
+        raise HTTPException(
+            status_code=400,
+            detail="Cannot delete action that has been executed",
+        )
+
+    db.delete(action)
+    db.commit()
+
+    return {"success": True, "message": "Action deleted successfully"}
+
+
+# ============================================================================
+# Manual Execution
+# ============================================================================
+
+@router.post("/actions/{action_id}/execute")
+async def execute_action_now(
+    project_id: str,
+    action_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Manually trigger execution of a scheduled action (for testing/debugging).
+    """
+    action = db.query(ScheduledAction).filter_by(
+        id=action_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status != "pending":
+        raise HTTPException(
+            status_code=400,
+            detail="Action is not pending",
+        )
+
+    # Execute via scheduler service
+    scheduler = get_scheduler()
+    result = await scheduler.execute_action_by_id(action_id)
+
+    # Refresh from DB to get updated status
+    db.refresh(action)
+
+    return JSONResponse({
+        "success": result.get("success", False),
+        "result": result,
+        "action": {
+            "id": action.id,
+            "execution_status": action.execution_status,
+            "executed_at": action.executed_at.isoformat() if action.executed_at else None,
+            "error_message": action.error_message,
+        },
+    })
+
+
+# ============================================================================
+# Scheduler Status
+# ============================================================================
+
+@router.get("/status")
+async def get_scheduler_status():
+    """
+    Get scheduler service status.
+    """
+    scheduler = get_scheduler()
+
+    return {
+        "running": scheduler.running,
+        "check_interval": scheduler.check_interval,
+    }
+
+
+@router.post("/execute-pending")
+async def trigger_pending_execution():
+    """
+    Manually trigger execution of all pending actions (for testing).
+    """
+    scheduler = get_scheduler()
+    results = await scheduler.execute_pending_actions()
+
+    return {
+        "success": True,
+        "executed_count": len(results),
+        "results": results,
+    }

backend/routers/seismo_dashboard.py

@@ -7,11 +7,11 @@ from fastapi import APIRouter, Request, Depends, Query
 from fastapi.responses import HTMLResponse
 from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
-from app.seismo.database import get_db
-from app.seismo.models import RosterUnit
+from backend.database import get_db
+from backend.models import RosterUnit
 
 router = APIRouter(prefix="/api/seismo-dashboard", tags=["seismo-dashboard"])
-templates = Jinja2Templates(directory="app/ui/templates")
+templates = Jinja2Templates(directory="templates")
 
 
 @router.get("/stats", response_class=HTMLResponse)

backend/routers/settings.py

@@ -9,9 +9,9 @@ import io
 import shutil
 from pathlib import Path
 
-from app.seismo.database import get_db
-from app.seismo.models import RosterUnit, Emitter, IgnoredUnit, UserPreferences
-from app.seismo.services.database_backup import DatabaseBackupService
+from backend.database import get_db
+from backend.models import RosterUnit, Emitter, IgnoredUnit, UserPreferences
+from backend.services.database_backup import DatabaseBackupService
 
 router = APIRouter(prefix="/api/settings", tags=["settings"])
 

backend/routers/slm_dashboard.py

@@ -0,0 +1,380 @@
+"""
+SLM Dashboard Router
+
+Provides API endpoints for the Sound Level Meters dashboard page.
+"""
+
+from fastapi import APIRouter, Request, Depends, Query
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse
+from sqlalchemy.orm import Session
+from sqlalchemy import func
+from datetime import datetime, timedelta
+import asyncio
+import httpx
+import logging
+import os
+
+from backend.database import get_db
+from backend.models import RosterUnit
+from backend.routers.roster_edit import sync_slm_to_slmm_cache
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/slm-dashboard", tags=["slm-dashboard"])
+templates = Jinja2Templates(directory="templates")
+
+# SLMM backend URL - configurable via environment variable
+SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")
+
+
+@router.get("/stats", response_class=HTMLResponse)
+async def get_slm_stats(request: Request, db: Session = Depends(get_db)):
+    """
+    Get summary statistics for SLM dashboard.
+    Returns HTML partial with stat cards.
+    """
+    # Query all SLMs
+    all_slms = db.query(RosterUnit).filter_by(device_type="sound_level_meter").all()
+
+    # Count deployed vs benched
+    deployed_count = sum(1 for slm in all_slms if slm.deployed and not slm.retired)
+    benched_count = sum(1 for slm in all_slms if not slm.deployed and not slm.retired)
+    retired_count = sum(1 for slm in all_slms if slm.retired)
+
+    # Count recently active (checked in last hour)
+    one_hour_ago = datetime.utcnow() - timedelta(hours=1)
+    active_count = sum(1 for slm in all_slms
+                      if slm.slm_last_check and slm.slm_last_check > one_hour_ago)
+
+    return templates.TemplateResponse("partials/slm_stats.html", {
+        "request": request,
+        "total_count": len(all_slms),
+        "deployed_count": deployed_count,
+        "benched_count": benched_count,
+        "active_count": active_count,
+        "retired_count": retired_count
+    })
+
+
+@router.get("/units", response_class=HTMLResponse)
+async def get_slm_units(
+    request: Request,
+    db: Session = Depends(get_db),
+    search: str = Query(None),
+    project: str = Query(None),
+    include_measurement: bool = Query(False),
+):
+    """
+    Get list of SLM units for the sidebar.
+    Returns HTML partial with unit cards.
+    """
+    query = db.query(RosterUnit).filter_by(device_type="sound_level_meter")
+
+    # Filter by project if provided
+    if project:
+        query = query.filter(RosterUnit.project_id == project)
+
+    # Filter by search term if provided
+    if search:
+        search_term = f"%{search}%"
+        query = query.filter(
+            (RosterUnit.id.like(search_term)) |
+            (RosterUnit.slm_model.like(search_term)) |
+            (RosterUnit.address.like(search_term))
+        )
+
+    units = query.order_by(
+        RosterUnit.retired.asc(),
+        RosterUnit.deployed.desc(),
+        RosterUnit.id.asc()
+    ).all()
+
+    one_hour_ago = datetime.utcnow() - timedelta(hours=1)
+    for unit in units:
+        unit.is_recent = bool(unit.slm_last_check and unit.slm_last_check > one_hour_ago)
+
+    if include_measurement:
+        async def fetch_measurement_state(client: httpx.AsyncClient, unit_id: str) -> str | None:
+            try:
+                response = await client.get(f"{SLMM_BASE_URL}/api/nl43/{unit_id}/measurement-state")
+                if response.status_code == 200:
+                    return response.json().get("measurement_state")
+            except Exception:
+                return None
+            return None
+
+        deployed_units = [unit for unit in units if unit.deployed and not unit.retired]
+        if deployed_units:
+            async with httpx.AsyncClient(timeout=3.0) as client:
+                tasks = [fetch_measurement_state(client, unit.id) for unit in deployed_units]
+                results = await asyncio.gather(*tasks, return_exceptions=True)
+
+            for unit, state in zip(deployed_units, results):
+                if isinstance(state, Exception):
+                    unit.measurement_state = None
+                else:
+                    unit.measurement_state = state
+
+    return templates.TemplateResponse("partials/slm_device_list.html", {
+        "request": request,
+        "units": units
+    })
+
+
+@router.get("/live-view/{unit_id}", response_class=HTMLResponse)
+async def get_live_view(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """
+    Get live view panel for a specific SLM unit.
+    Returns HTML partial with live metrics and chart.
+    """
+    # Get unit from database
+    unit = db.query(RosterUnit).filter_by(id=unit_id, device_type="sound_level_meter").first()
+
+    if not unit:
+        return templates.TemplateResponse("partials/slm_live_view_error.html", {
+            "request": request,
+            "error": f"Unit {unit_id} not found"
+        })
+
+    # Get modem information if assigned
+    modem = None
+    modem_ip = None
+    if unit.deployed_with_modem_id:
+        modem = db.query(RosterUnit).filter_by(id=unit.deployed_with_modem_id, device_type="modem").first()
+        if modem:
+            modem_ip = modem.ip_address
+        else:
+            logger.warning(f"SLM {unit_id} is assigned to modem {unit.deployed_with_modem_id} but modem not found")
+
+    # Fallback to direct slm_host if no modem assigned (backward compatibility)
+    if not modem_ip and unit.slm_host:
+        modem_ip = unit.slm_host
+        logger.info(f"Using legacy slm_host for {unit_id}: {modem_ip}")
+
+    # Try to get current status from SLMM
+    current_status = None
+    measurement_state = None
+    is_measuring = False
+
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            # Get measurement state
+            state_response = await client.get(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/measurement-state"
+            )
+            if state_response.status_code == 200:
+                state_data = state_response.json()
+                measurement_state = state_data.get("measurement_state", "Unknown")
+                is_measuring = state_data.get("is_measuring", False)
+
+            # If measuring, sync start time from FTP to database (fixes wrong timestamps)
+            if is_measuring:
+                try:
+                    sync_response = await client.post(
+                        f"{SLMM_BASE_URL}/api/nl43/{unit_id}/sync-start-time",
+                        timeout=10.0
+                    )
+                    if sync_response.status_code == 200:
+                        sync_data = sync_response.json()
+                        logger.info(f"Synced start time for {unit_id}: {sync_data.get('message')}")
+                    else:
+                        logger.warning(f"Failed to sync start time for {unit_id}: {sync_response.status_code}")
+                except Exception as e:
+                    # Don't fail the whole request if sync fails
+                    logger.warning(f"Could not sync start time for {unit_id}: {e}")
+
+            # Get live status (now with corrected start time)
+            status_response = await client.get(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/live"
+            )
+            if status_response.status_code == 200:
+                status_data = status_response.json()
+                current_status = status_data.get("data", {})
+    except Exception as e:
+        logger.error(f"Failed to get status for {unit_id}: {e}")
+
+    return templates.TemplateResponse("partials/slm_live_view.html", {
+        "request": request,
+        "unit": unit,
+        "modem": modem,
+        "modem_ip": modem_ip,
+        "current_status": current_status,
+        "measurement_state": measurement_state,
+        "is_measuring": is_measuring
+    })
+
+
+@router.post("/control/{unit_id}/{action}")
+async def control_slm(unit_id: str, action: str):
+    """
+    Send control commands to SLM (start, stop, pause, resume, reset).
+    Proxies to SLMM backend.
+    """
+    valid_actions = ["start", "stop", "pause", "resume", "reset"]
+
+    if action not in valid_actions:
+        return {"status": "error", "detail": f"Invalid action. Must be one of: {valid_actions}"}
+
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            response = await client.post(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/{action}"
+            )
+
+            if response.status_code == 200:
+                return response.json()
+            else:
+                return {
+                    "status": "error",
+                    "detail": f"SLMM returned status {response.status_code}"
+                }
+    except Exception as e:
+        logger.error(f"Failed to control {unit_id}: {e}")
+        return {
+            "status": "error",
+            "detail": str(e)
+        }
+
+@router.get("/config/{unit_id}", response_class=HTMLResponse)
+async def get_slm_config(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """
+    Get configuration form for a specific SLM unit.
+    Returns HTML partial with configuration form.
+    """
+    unit = db.query(RosterUnit).filter_by(id=unit_id, device_type="sound_level_meter").first()
+
+    if not unit:
+        return HTMLResponse(
+            content=f'<div class="text-red-500">Unit {unit_id} not found</div>',
+            status_code=404
+        )
+
+    return templates.TemplateResponse("partials/slm_config_form.html", {
+        "request": request,
+        "unit": unit
+    })
+
+
+@router.post("/config/{unit_id}")
+async def save_slm_config(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """
+    Save SLM configuration.
+    Updates unit parameters in the database.
+    """
+    unit = db.query(RosterUnit).filter_by(id=unit_id, device_type="sound_level_meter").first()
+
+    if not unit:
+        return {"status": "error", "detail": f"Unit {unit_id} not found"}
+
+    try:
+        # Get form data
+        form_data = await request.form()
+
+        # Update SLM-specific fields
+        unit.slm_model = form_data.get("slm_model") or None
+        unit.slm_serial_number = form_data.get("slm_serial_number") or None
+        unit.slm_frequency_weighting = form_data.get("slm_frequency_weighting") or None
+        unit.slm_time_weighting = form_data.get("slm_time_weighting") or None
+        unit.slm_measurement_range = form_data.get("slm_measurement_range") or None
+
+        # Update network configuration
+        modem_id = form_data.get("deployed_with_modem_id")
+        unit.deployed_with_modem_id = modem_id if modem_id else None
+
+        # Always update TCP and FTP ports (used regardless of modem assignment)
+        unit.slm_tcp_port = int(form_data.get("slm_tcp_port")) if form_data.get("slm_tcp_port") else None
+        unit.slm_ftp_port = int(form_data.get("slm_ftp_port")) if form_data.get("slm_ftp_port") else None
+
+        # Only update direct IP if no modem is assigned
+        if not modem_id:
+            unit.slm_host = form_data.get("slm_host") or None
+        else:
+            # Clear legacy direct IP field when modem is assigned
+            unit.slm_host = None
+
+        db.commit()
+        logger.info(f"Updated configuration for SLM {unit_id}")
+
+        # Sync updated configuration to SLMM cache
+        logger.info(f"Syncing SLM {unit_id} config changes to SLMM cache...")
+        result = await sync_slm_to_slmm_cache(
+            unit_id=unit_id,
+            host=unit.slm_host,  # Use the updated host from Terra-View
+            tcp_port=unit.slm_tcp_port,
+            ftp_port=unit.slm_ftp_port,
+            deployed_with_modem_id=unit.deployed_with_modem_id,  # Resolve modem IP if assigned
+            db=db
+        )
+
+        if not result["success"]:
+            logger.warning(f"SLMM cache sync warning for {unit_id}: {result['message']}")
+            # Config still saved in Terra-View (source of truth)
+
+        return {"status": "success", "unit_id": unit_id}
+
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to save config for {unit_id}: {e}")
+        return {"status": "error", "detail": str(e)}
+
+
+@router.get("/test-modem/{modem_id}")
+async def test_modem_connection(modem_id: str, db: Session = Depends(get_db)):
+    """
+    Test modem connectivity with a simple ping/health check.
+    Returns response time and connection status.
+    """
+    import subprocess
+    import time
+
+    # Get modem from database
+    modem = db.query(RosterUnit).filter_by(id=modem_id, device_type="modem").first()
+
+    if not modem:
+        return {"status": "error", "detail": f"Modem {modem_id} not found"}
+
+    if not modem.ip_address:
+        return {"status": "error", "detail": f"Modem {modem_id} has no IP address configured"}
+
+    try:
+        # Ping the modem (1 packet, 2 second timeout)
+        start_time = time.time()
+        result = subprocess.run(
+            ["ping", "-c", "1", "-W", "2", modem.ip_address],
+            capture_output=True,
+            text=True,
+            timeout=3
+        )
+        response_time = int((time.time() - start_time) * 1000)  # Convert to milliseconds
+
+        if result.returncode == 0:
+            return {
+                "status": "success",
+                "modem_id": modem_id,
+                "ip_address": modem.ip_address,
+                "response_time": response_time,
+                "message": "Modem is responding to ping"
+            }
+        else:
+            return {
+                "status": "error",
+                "modem_id": modem_id,
+                "ip_address": modem.ip_address,
+                "detail": "Modem not responding to ping"
+            }
+
+    except subprocess.TimeoutExpired:
+        return {
+            "status": "error",
+            "modem_id": modem_id,
+            "ip_address": modem.ip_address,
+            "detail": "Ping timeout (> 2 seconds)"
+        }
+    except Exception as e:
+        logger.error(f"Failed to ping modem {modem_id}: {e}")
+        return {
+            "status": "error",
+            "modem_id": modem_id,
+            "detail": str(e)
+        }

backend/routers/slm_ui.py

@@ -0,0 +1,123 @@
+"""
+Sound Level Meter UI Router
+
+Provides endpoints for SLM dashboard cards, detail pages, and real-time data.
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, Request
+from fastapi.responses import HTMLResponse
+from fastapi.templating import Jinja2Templates
+from sqlalchemy.orm import Session
+from datetime import datetime
+import httpx
+import logging
+import os
+
+from backend.database import get_db
+from backend.models import RosterUnit
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/slm", tags=["slm-ui"])
+templates = Jinja2Templates(directory="templates")
+
+SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://172.19.0.1:8100")
+
+
+@router.get("/{unit_id}", response_class=HTMLResponse)
+async def slm_detail_page(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """Sound level meter detail page with controls."""
+
+    # Get roster unit
+    unit = db.query(RosterUnit).filter_by(id=unit_id).first()
+    if not unit or unit.device_type != "sound_level_meter":
+        raise HTTPException(status_code=404, detail="Sound level meter not found")
+
+    return templates.TemplateResponse("slm_detail.html", {
+        "request": request,
+        "unit": unit,
+        "unit_id": unit_id
+    })
+
+
+@router.get("/api/{unit_id}/summary")
+async def get_slm_summary(unit_id: str, db: Session = Depends(get_db)):
+    """Get SLM summary data for dashboard card."""
+
+    # Get roster unit
+    unit = db.query(RosterUnit).filter_by(id=unit_id).first()
+    if not unit or unit.device_type != "sound_level_meter":
+        raise HTTPException(status_code=404, detail="Sound level meter not found")
+
+    # Try to get live status from SLMM
+    status_data = None
+    try:
+        async with httpx.AsyncClient(timeout=3.0) as client:
+            response = await client.get(f"{SLMM_BASE_URL}/api/nl43/{unit_id}/status")
+            if response.status_code == 200:
+                status_data = response.json().get("data")
+    except Exception as e:
+        logger.warning(f"Failed to get SLM status for {unit_id}: {e}")
+
+    return {
+        "unit_id": unit_id,
+        "device_type": "sound_level_meter",
+        "deployed": unit.deployed,
+        "model": unit.slm_model or "NL-43",
+        "location": unit.address or unit.location,
+        "coordinates": unit.coordinates,
+        "note": unit.note,
+        "status": status_data,
+        "last_check": unit.slm_last_check.isoformat() if unit.slm_last_check else None,
+    }
+
+
+@router.get("/partials/{unit_id}/card", response_class=HTMLResponse)
+async def slm_dashboard_card(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """Render SLM dashboard card partial."""
+
+    summary = await get_slm_summary(unit_id, db)
+
+    return templates.TemplateResponse("partials/slm_card.html", {
+        "request": request,
+        "slm": summary
+    })
+
+
+@router.get("/partials/{unit_id}/controls", response_class=HTMLResponse)
+async def slm_controls_partial(request: Request, unit_id: str, db: Session = Depends(get_db)):
+    """Render SLM control panel partial."""
+
+    unit = db.query(RosterUnit).filter_by(id=unit_id).first()
+    if not unit or unit.device_type != "sound_level_meter":
+        raise HTTPException(status_code=404, detail="Sound level meter not found")
+
+    # Get current status from SLMM
+    measurement_state = None
+    battery_level = None
+    try:
+        async with httpx.AsyncClient(timeout=3.0) as client:
+            # Get measurement state
+            state_response = await client.get(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/measurement-state"
+            )
+            if state_response.status_code == 200:
+                measurement_state = state_response.json().get("measurement_state")
+
+            # Get battery level
+            battery_response = await client.get(
+                f"{SLMM_BASE_URL}/api/nl43/{unit_id}/battery"
+            )
+            if battery_response.status_code == 200:
+                battery_level = battery_response.json().get("battery_level")
+    except Exception as e:
+        logger.warning(f"Failed to get SLM control data for {unit_id}: {e}")
+
+    return templates.TemplateResponse("partials/slm_controls.html", {
+        "request": request,
+        "unit_id": unit_id,
+        "unit": unit,
+        "measurement_state": measurement_state,
+        "battery_level": battery_level,
+        "is_measuring": measurement_state == "Start"
+    })

backend/routers/slmm.py

@@ -0,0 +1,301 @@
+"""
+SLMM (Sound Level Meter Manager) Proxy Router
+
+Proxies requests from SFM to the standalone SLMM backend service.
+SLMM runs on port 8100 and handles NL43/NL53 sound level meter communication.
+"""
+
+from fastapi import APIRouter, HTTPException, Request, Response, WebSocket, WebSocketDisconnect
+from fastapi.responses import StreamingResponse
+import httpx
+import websockets
+import asyncio
+import logging
+import os
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/slmm", tags=["slmm"])
+
+# SLMM backend URL - configurable via environment variable
+SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")
+# WebSocket URL derived from HTTP URL
+SLMM_WS_BASE_URL = SLMM_BASE_URL.replace("http://", "ws://").replace("https://", "wss://")
+
+
+@router.get("/health")
+async def check_slmm_health():
+    """
+    Check if the SLMM backend service is reachable and healthy.
+    """
+    try:
+        async with httpx.AsyncClient(timeout=5.0) as client:
+            response = await client.get(f"{SLMM_BASE_URL}/health")
+
+            if response.status_code == 200:
+                data = response.json()
+                return {
+                    "status": "ok",
+                    "slmm_status": "connected",
+                    "slmm_url": SLMM_BASE_URL,
+                    "slmm_version": data.get("version", "unknown"),
+                    "slmm_response": data
+                }
+            else:
+                return {
+                    "status": "degraded",
+                    "slmm_status": "error",
+                    "slmm_url": SLMM_BASE_URL,
+                    "detail": f"SLMM returned status {response.status_code}"
+                }
+
+    except httpx.ConnectError:
+        return {
+            "status": "error",
+            "slmm_status": "unreachable",
+            "slmm_url": SLMM_BASE_URL,
+            "detail": "Cannot connect to SLMM backend. Is it running?"
+        }
+    except Exception as e:
+        return {
+            "status": "error",
+            "slmm_status": "error",
+            "slmm_url": SLMM_BASE_URL,
+            "detail": str(e)
+        }
+
+
+# WebSocket routes MUST come before the catch-all route
+@router.websocket("/{unit_id}/stream")
+async def proxy_websocket_stream(websocket: WebSocket, unit_id: str):
+    """
+    Proxy WebSocket connections to SLMM's /stream endpoint.
+
+    This allows real-time streaming of measurement data from NL43 devices
+    through the SFM unified interface.
+    """
+    await websocket.accept()
+    logger.info(f"WebSocket connection accepted for SLMM unit {unit_id}")
+
+    # Build target WebSocket URL
+    target_ws_url = f"{SLMM_WS_BASE_URL}/api/nl43/{unit_id}/stream"
+    logger.info(f"Connecting to SLMM WebSocket: {target_ws_url}")
+
+    backend_ws = None
+
+    try:
+        # Connect to SLMM backend WebSocket
+        backend_ws = await websockets.connect(target_ws_url)
+        logger.info(f"Connected to SLMM backend WebSocket for {unit_id}")
+
+        # Create tasks for bidirectional communication
+        async def forward_to_backend():
+            """Forward messages from client to SLMM backend"""
+            try:
+                while True:
+                    data = await websocket.receive_text()
+                    await backend_ws.send(data)
+            except WebSocketDisconnect:
+                logger.info(f"Client WebSocket disconnected for {unit_id}")
+            except Exception as e:
+                logger.error(f"Error forwarding to backend: {e}")
+
+        async def forward_to_client():
+            """Forward messages from SLMM backend to client"""
+            try:
+                async for message in backend_ws:
+                    await websocket.send_text(message)
+            except websockets.exceptions.ConnectionClosed:
+                logger.info(f"Backend WebSocket closed for {unit_id}")
+            except Exception as e:
+                logger.error(f"Error forwarding to client: {e}")
+
+        # Run both forwarding tasks concurrently
+        await asyncio.gather(
+            forward_to_backend(),
+            forward_to_client(),
+            return_exceptions=True
+        )
+
+    except websockets.exceptions.WebSocketException as e:
+        logger.error(f"WebSocket error connecting to SLMM backend: {e}")
+        try:
+            await websocket.send_json({
+                "error": "Failed to connect to SLMM backend",
+                "detail": str(e)
+            })
+        except Exception:
+            pass
+    except Exception as e:
+        logger.error(f"Unexpected error in WebSocket proxy for {unit_id}: {e}")
+        try:
+            await websocket.send_json({
+                "error": "Internal server error",
+                "detail": str(e)
+            })
+        except Exception:
+            pass
+    finally:
+        # Clean up connections
+        if backend_ws:
+            try:
+                await backend_ws.close()
+            except Exception:
+                pass
+        try:
+            await websocket.close()
+        except Exception:
+            pass
+        logger.info(f"WebSocket proxy closed for {unit_id}")
+
+
+@router.websocket("/{unit_id}/live")
+async def proxy_websocket_live(websocket: WebSocket, unit_id: str):
+    """
+    Proxy WebSocket connections to SLMM's /live endpoint.
+
+    Alternative WebSocket endpoint that may be used by some frontend components.
+    """
+    await websocket.accept()
+    logger.info(f"WebSocket connection accepted for SLMM unit {unit_id} (live endpoint)")
+
+    # Build target WebSocket URL - try /stream endpoint as SLMM uses that for WebSocket
+    target_ws_url = f"{SLMM_WS_BASE_URL}/api/nl43/{unit_id}/stream"
+    logger.info(f"Connecting to SLMM WebSocket: {target_ws_url}")
+
+    backend_ws = None
+
+    try:
+        # Connect to SLMM backend WebSocket
+        backend_ws = await websockets.connect(target_ws_url)
+        logger.info(f"Connected to SLMM backend WebSocket for {unit_id} (live endpoint)")
+
+        # Create tasks for bidirectional communication
+        async def forward_to_backend():
+            """Forward messages from client to SLMM backend"""
+            try:
+                while True:
+                    data = await websocket.receive_text()
+                    await backend_ws.send(data)
+            except WebSocketDisconnect:
+                logger.info(f"Client WebSocket disconnected for {unit_id} (live)")
+            except Exception as e:
+                logger.error(f"Error forwarding to backend (live): {e}")
+
+        async def forward_to_client():
+            """Forward messages from SLMM backend to client"""
+            try:
+                async for message in backend_ws:
+                    await websocket.send_text(message)
+            except websockets.exceptions.ConnectionClosed:
+                logger.info(f"Backend WebSocket closed for {unit_id} (live)")
+            except Exception as e:
+                logger.error(f"Error forwarding to client (live): {e}")
+
+        # Run both forwarding tasks concurrently
+        await asyncio.gather(
+            forward_to_backend(),
+            forward_to_client(),
+            return_exceptions=True
+        )
+
+    except websockets.exceptions.WebSocketException as e:
+        logger.error(f"WebSocket error connecting to SLMM backend (live): {e}")
+        try:
+            await websocket.send_json({
+                "error": "Failed to connect to SLMM backend",
+                "detail": str(e)
+            })
+        except Exception:
+            pass
+    except Exception as e:
+        logger.error(f"Unexpected error in WebSocket proxy for {unit_id} (live): {e}")
+        try:
+            await websocket.send_json({
+                "error": "Internal server error",
+                "detail": str(e)
+            })
+        except Exception:
+            pass
+    finally:
+        # Clean up connections
+        if backend_ws:
+            try:
+                await backend_ws.close()
+            except Exception:
+                pass
+        try:
+            await websocket.close()
+        except Exception:
+            pass
+        logger.info(f"WebSocket proxy closed for {unit_id} (live)")
+
+
+# HTTP catch-all route MUST come after specific routes (including WebSocket routes)
+@router.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
+async def proxy_to_slmm(path: str, request: Request):
+    """
+    Proxy all requests to the SLMM backend service.
+
+    This allows SFM to act as a unified frontend for all device types,
+    while SLMM remains a standalone backend service.
+    """
+    # Build target URL
+    target_url = f"{SLMM_BASE_URL}/api/nl43/{path}"
+
+    # Get query parameters
+    query_params = dict(request.query_params)
+
+    # Get request body if present
+    body = None
+    if request.method in ["POST", "PUT", "PATCH"]:
+        try:
+            body = await request.body()
+        except Exception as e:
+            logger.error(f"Failed to read request body: {e}")
+            body = None
+
+    # Get headers (exclude host and other proxy-specific headers)
+    headers = dict(request.headers)
+    headers_to_exclude = ["host", "content-length", "transfer-encoding", "connection"]
+    proxy_headers = {k: v for k, v in headers.items() if k.lower() not in headers_to_exclude}
+
+    logger.info(f"Proxying {request.method} request to SLMM: {target_url}")
+
+    try:
+        async with httpx.AsyncClient(timeout=30.0) as client:
+            # Forward the request to SLMM
+            response = await client.request(
+                method=request.method,
+                url=target_url,
+                params=query_params,
+                headers=proxy_headers,
+                content=body
+            )
+
+            # Return the response from SLMM
+            return Response(
+                content=response.content,
+                status_code=response.status_code,
+                headers=dict(response.headers),
+                media_type=response.headers.get("content-type")
+            )
+
+    except httpx.ConnectError:
+        logger.error(f"Failed to connect to SLMM backend at {SLMM_BASE_URL}")
+        raise HTTPException(
+            status_code=503,
+            detail=f"SLMM backend service unavailable. Is SLMM running on {SLMM_BASE_URL}?"
+        )
+    except httpx.TimeoutException:
+        logger.error(f"Timeout connecting to SLMM backend at {SLMM_BASE_URL}")
+        raise HTTPException(
+            status_code=504,
+            detail="SLMM backend timeout"
+        )
+    except Exception as e:
+        logger.error(f"Error proxying to SLMM: {e}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to proxy request to SLMM: {str(e)}"
+        )

backend/routers/units.py

@@ -3,8 +3,9 @@ from sqlalchemy.orm import Session
 from datetime import datetime
 from typing import Dict, Any
 
-from app.seismo.database import get_db
-from app.seismo.services.snapshot import emit_status_snapshot
+from backend.database import get_db
+from backend.services.snapshot import emit_status_snapshot
+from backend.models import RosterUnit
 
 router = APIRouter(prefix="/api", tags=["units"])
 
@@ -42,3 +43,32 @@ def get_unit_detail(unit_id: str, db: Session = Depends(get_db)):
         "note": unit_data.get("note", ""),
         "coordinates": coords
     }
+
+
+@router.get("/units/{unit_id}")
+def get_unit_by_id(unit_id: str, db: Session = Depends(get_db)):
+    """
+    Get unit data directly from the roster (for settings/configuration).
+    """
+    unit = db.query(RosterUnit).filter_by(id=unit_id).first()
+
+    if not unit:
+        raise HTTPException(status_code=404, detail=f"Unit {unit_id} not found")
+
+    return {
+        "id": unit.id,
+        "unit_type": unit.unit_type,
+        "device_type": unit.device_type,
+        "deployed": unit.deployed,
+        "retired": unit.retired,
+        "note": unit.note,
+        "location": unit.location,
+        "address": unit.address,
+        "coordinates": unit.coordinates,
+        "slm_host": unit.slm_host,
+        "slm_tcp_port": unit.slm_tcp_port,
+        "slm_ftp_port": unit.slm_ftp_port,
+        "slm_model": unit.slm_model,
+        "slm_serial_number": unit.slm_serial_number,
+        "deployed_with_modem_id": unit.deployed_with_modem_id
+    }

backend/routes.py

@@ -4,8 +4,8 @@ from pydantic import BaseModel
 from datetime import datetime
 from typing import Optional, List
 
-from app.seismo.database import get_db
-from app.seismo.models import Emitter
+from backend.database import get_db
+from backend.models import Emitter
 
 router = APIRouter()
 

backend/services/backup_scheduler.py

@@ -10,7 +10,7 @@ from datetime import datetime
 from typing import Optional
 import logging
 
-from app.seismo.services.database_backup import DatabaseBackupService
+from backend.services.database_backup import DatabaseBackupService
 
 logger = logging.getLogger(__name__)
 

backend/services/device_controller.py

@@ -0,0 +1,384 @@
+"""
+Device Controller Service
+
+Routes device operations to the appropriate backend module:
+- SLMM for sound level meters
+- SFM for seismographs (future implementation)
+
+This abstraction allows Projects system to work with any device type
+without knowing the underlying communication protocol.
+"""
+
+from typing import Dict, Any, Optional, List
+from backend.services.slmm_client import get_slmm_client, SLMMClientError
+
+
+class DeviceControllerError(Exception):
+    """Base exception for device controller errors."""
+    pass
+
+
+class UnsupportedDeviceTypeError(DeviceControllerError):
+    """Raised when device type is not supported."""
+    pass
+
+
+class DeviceController:
+    """
+    Unified interface for controlling all device types.
+
+    Routes commands to appropriate backend module based on device_type.
+
+    Usage:
+        controller = DeviceController()
+        await controller.start_recording("nl43-001", "sound_level_meter", config={})
+        await controller.stop_recording("seismo-042", "seismograph")
+    """
+
+    def __init__(self):
+        self.slmm_client = get_slmm_client()
+
+    # ========================================================================
+    # Recording Control
+    # ========================================================================
+
+    async def start_recording(
+        self,
+        unit_id: str,
+        device_type: str,
+        config: Optional[Dict[str, Any]] = None,
+    ) -> Dict[str, Any]:
+        """
+        Start recording on a device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+            config: Device-specific recording configuration
+
+        Returns:
+            Response dict from device module
+
+        Raises:
+            UnsupportedDeviceTypeError: Device type not supported
+            DeviceControllerError: Operation failed
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.start_recording(unit_id, config)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            # TODO: Implement SFM client for seismograph control
+            # For now, return a placeholder response
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph recording control not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(
+                f"Device type '{device_type}' is not supported. "
+                f"Supported types: sound_level_meter, seismograph"
+            )
+
+    async def stop_recording(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> Dict[str, Any]:
+        """
+        Stop recording on a device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            Response dict from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.stop_recording(unit_id)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            # TODO: Implement SFM client
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph recording control not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    async def pause_recording(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> Dict[str, Any]:
+        """
+        Pause recording on a device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            Response dict from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.pause_recording(unit_id)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph pause not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    async def resume_recording(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> Dict[str, Any]:
+        """
+        Resume paused recording on a device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            Response dict from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.resume_recording(unit_id)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph resume not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    # ========================================================================
+    # Status & Monitoring
+    # ========================================================================
+
+    async def get_device_status(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> Dict[str, Any]:
+        """
+        Get current device status.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            Status dict from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.get_unit_status(unit_id)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            # TODO: Implement SFM status check
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph status not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    async def get_live_data(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> Dict[str, Any]:
+        """
+        Get live data from device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            Live data dict from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.get_live_data(unit_id)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph live data not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    # ========================================================================
+    # Data Download
+    # ========================================================================
+
+    async def download_files(
+        self,
+        unit_id: str,
+        device_type: str,
+        destination_path: str,
+        files: Optional[List[str]] = None,
+    ) -> Dict[str, Any]:
+        """
+        Download data files from device.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+            destination_path: Local path to save files
+            files: List of filenames, or None for all
+
+        Returns:
+            Download result with file list
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.download_files(
+                    unit_id,
+                    destination_path,
+                    files,
+                )
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            # TODO: Implement SFM file download
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph file download not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    # ========================================================================
+    # Device Configuration
+    # ========================================================================
+
+    async def update_device_config(
+        self,
+        unit_id: str,
+        device_type: str,
+        config: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        """
+        Update device configuration.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+            config: Configuration parameters
+
+        Returns:
+            Updated config from device module
+        """
+        if device_type == "sound_level_meter":
+            try:
+                return await self.slmm_client.update_unit_config(
+                    unit_id,
+                    host=config.get("host"),
+                    tcp_port=config.get("tcp_port"),
+                    ftp_port=config.get("ftp_port"),
+                    ftp_username=config.get("ftp_username"),
+                    ftp_password=config.get("ftp_password"),
+                )
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph config update not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    # ========================================================================
+    # Health Check
+    # ========================================================================
+
+    async def check_device_connectivity(
+        self,
+        unit_id: str,
+        device_type: str,
+    ) -> bool:
+        """
+        Check if device is reachable.
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "sound_level_meter" | "seismograph"
+
+        Returns:
+            True if device is reachable, False otherwise
+        """
+        if device_type == "sound_level_meter":
+            try:
+                status = await self.slmm_client.get_unit_status(unit_id)
+                return status.get("last_seen") is not None
+            except:
+                return False
+
+        elif device_type == "seismograph":
+            # TODO: Implement SFM connectivity check
+            return False
+
+        else:
+            return False
+
+
+# Singleton instance
+_default_controller: Optional[DeviceController] = None
+
+
+def get_device_controller() -> DeviceController:
+    """
+    Get the default device controller instance.
+
+    Returns:
+        DeviceController instance
+    """
+    global _default_controller
+    if _default_controller is None:
+        _default_controller = DeviceController()
+    return _default_controller

backend/services/scheduler.py

@@ -0,0 +1,355 @@
+"""
+Scheduler Service
+
+Executes scheduled actions for Projects system.
+Monitors pending scheduled actions and executes them by calling device modules (SLMM/SFM).
+
+This service runs as a background task in FastAPI, checking for pending actions
+every minute and executing them when their scheduled time arrives.
+"""
+
+import asyncio
+import json
+from datetime import datetime, timedelta
+from typing import Optional, List, Dict, Any
+from sqlalchemy.orm import Session
+from sqlalchemy import and_
+
+from backend.database import SessionLocal
+from backend.models import ScheduledAction, RecordingSession, MonitoringLocation, Project
+from backend.services.device_controller import get_device_controller, DeviceControllerError
+import uuid
+
+
+class SchedulerService:
+    """
+    Service for executing scheduled actions.
+
+    Usage:
+        scheduler = SchedulerService()
+        await scheduler.start()  # Start background loop
+        scheduler.stop()  # Stop background loop
+    """
+
+    def __init__(self, check_interval: int = 60):
+        """
+        Initialize scheduler.
+
+        Args:
+            check_interval: Seconds between checks for pending actions (default: 60)
+        """
+        self.check_interval = check_interval
+        self.running = False
+        self.task: Optional[asyncio.Task] = None
+        self.device_controller = get_device_controller()
+
+    async def start(self):
+        """Start the scheduler background task."""
+        if self.running:
+            print("Scheduler is already running")
+            return
+
+        self.running = True
+        self.task = asyncio.create_task(self._run_loop())
+        print(f"Scheduler started (checking every {self.check_interval}s)")
+
+    def stop(self):
+        """Stop the scheduler background task."""
+        self.running = False
+        if self.task:
+            self.task.cancel()
+        print("Scheduler stopped")
+
+    async def _run_loop(self):
+        """Main scheduler loop."""
+        while self.running:
+            try:
+                await self.execute_pending_actions()
+            except Exception as e:
+                print(f"Scheduler error: {e}")
+                # Continue running even if there's an error
+
+            await asyncio.sleep(self.check_interval)
+
+    async def execute_pending_actions(self) -> List[Dict[str, Any]]:
+        """
+        Find and execute all pending scheduled actions that are due.
+
+        Returns:
+            List of execution results
+        """
+        db = SessionLocal()
+        results = []
+
+        try:
+            # Find pending actions that are due
+            now = datetime.utcnow()
+            pending_actions = db.query(ScheduledAction).filter(
+                and_(
+                    ScheduledAction.execution_status == "pending",
+                    ScheduledAction.scheduled_time <= now,
+                )
+            ).order_by(ScheduledAction.scheduled_time).all()
+
+            if not pending_actions:
+                return []
+
+            print(f"Found {len(pending_actions)} pending action(s) to execute")
+
+            for action in pending_actions:
+                result = await self._execute_action(action, db)
+                results.append(result)
+
+            db.commit()
+
+        except Exception as e:
+            print(f"Error executing pending actions: {e}")
+            db.rollback()
+        finally:
+            db.close()
+
+        return results
+
+    async def _execute_action(
+        self,
+        action: ScheduledAction,
+        db: Session,
+    ) -> Dict[str, Any]:
+        """
+        Execute a single scheduled action.
+
+        Args:
+            action: ScheduledAction to execute
+            db: Database session
+
+        Returns:
+            Execution result dict
+        """
+        print(f"Executing action {action.id}: {action.action_type} for unit {action.unit_id}")
+
+        result = {
+            "action_id": action.id,
+            "action_type": action.action_type,
+            "unit_id": action.unit_id,
+            "scheduled_time": action.scheduled_time.isoformat(),
+            "success": False,
+            "error": None,
+        }
+
+        try:
+            # Determine which unit to use
+            # If unit_id is specified, use it; otherwise get from location assignment
+            unit_id = action.unit_id
+            if not unit_id:
+                # Get assigned unit from location
+                from backend.models import UnitAssignment
+                assignment = db.query(UnitAssignment).filter(
+                    and_(
+                        UnitAssignment.location_id == action.location_id,
+                        UnitAssignment.status == "active",
+                    )
+                ).first()
+
+                if not assignment:
+                    raise Exception(f"No active unit assigned to location {action.location_id}")
+
+                unit_id = assignment.unit_id
+
+            # Execute the action based on type
+            if action.action_type == "start":
+                response = await self._execute_start(action, unit_id, db)
+            elif action.action_type == "stop":
+                response = await self._execute_stop(action, unit_id, db)
+            elif action.action_type == "download":
+                response = await self._execute_download(action, unit_id, db)
+            else:
+                raise Exception(f"Unknown action type: {action.action_type}")
+
+            # Mark action as completed
+            action.execution_status = "completed"
+            action.executed_at = datetime.utcnow()
+            action.module_response = json.dumps(response)
+
+            result["success"] = True
+            result["response"] = response
+
+            print(f"✓ Action {action.id} completed successfully")
+
+        except Exception as e:
+            # Mark action as failed
+            action.execution_status = "failed"
+            action.executed_at = datetime.utcnow()
+            action.error_message = str(e)
+
+            result["error"] = str(e)
+
+            print(f"✗ Action {action.id} failed: {e}")
+
+        return result
+
+    async def _execute_start(
+        self,
+        action: ScheduledAction,
+        unit_id: str,
+        db: Session,
+    ) -> Dict[str, Any]:
+        """Execute a 'start' action."""
+        # Start recording via device controller
+        response = await self.device_controller.start_recording(
+            unit_id,
+            action.device_type,
+            config={},  # TODO: Load config from action.notes or metadata
+        )
+
+        # Create recording session
+        session = RecordingSession(
+            id=str(uuid.uuid4()),
+            project_id=action.project_id,
+            location_id=action.location_id,
+            unit_id=unit_id,
+            session_type="sound" if action.device_type == "sound_level_meter" else "vibration",
+            started_at=datetime.utcnow(),
+            status="recording",
+            session_metadata=json.dumps({"scheduled_action_id": action.id}),
+        )
+        db.add(session)
+
+        return {
+            "status": "started",
+            "session_id": session.id,
+            "device_response": response,
+        }
+
+    async def _execute_stop(
+        self,
+        action: ScheduledAction,
+        unit_id: str,
+        db: Session,
+    ) -> Dict[str, Any]:
+        """Execute a 'stop' action."""
+        # Stop recording via device controller
+        response = await self.device_controller.stop_recording(
+            unit_id,
+            action.device_type,
+        )
+
+        # Find and update the active recording session
+        active_session = db.query(RecordingSession).filter(
+            and_(
+                RecordingSession.location_id == action.location_id,
+                RecordingSession.unit_id == unit_id,
+                RecordingSession.status == "recording",
+            )
+        ).first()
+
+        if active_session:
+            active_session.stopped_at = datetime.utcnow()
+            active_session.status = "completed"
+            active_session.duration_seconds = int(
+                (active_session.stopped_at - active_session.started_at).total_seconds()
+            )
+
+        return {
+            "status": "stopped",
+            "session_id": active_session.id if active_session else None,
+            "device_response": response,
+        }
+
+    async def _execute_download(
+        self,
+        action: ScheduledAction,
+        unit_id: str,
+        db: Session,
+    ) -> Dict[str, Any]:
+        """Execute a 'download' action."""
+        # Get project and location info for file path
+        location = db.query(MonitoringLocation).filter_by(id=action.location_id).first()
+        project = db.query(Project).filter_by(id=action.project_id).first()
+
+        if not location or not project:
+            raise Exception("Project or location not found")
+
+        # Build destination path
+        # Example: data/Projects/{project-id}/sound/{location-name}/session-{timestamp}/
+        session_timestamp = datetime.utcnow().strftime("%Y-%m-%d-%H%M")
+        location_type_dir = "sound" if action.device_type == "sound_level_meter" else "vibration"
+
+        destination_path = (
+            f"data/Projects/{project.id}/{location_type_dir}/"
+            f"{location.name}/session-{session_timestamp}/"
+        )
+
+        # Download files via device controller
+        response = await self.device_controller.download_files(
+            unit_id,
+            action.device_type,
+            destination_path,
+            files=None,  # Download all files
+        )
+
+        # TODO: Create DataFile records for downloaded files
+
+        return {
+            "status": "downloaded",
+            "destination_path": destination_path,
+            "device_response": response,
+        }
+
+    # ========================================================================
+    # Manual Execution (for testing/debugging)
+    # ========================================================================
+
+    async def execute_action_by_id(self, action_id: str) -> Dict[str, Any]:
+        """
+        Manually execute a specific action by ID.
+
+        Args:
+            action_id: ScheduledAction ID
+
+        Returns:
+            Execution result
+        """
+        db = SessionLocal()
+        try:
+            action = db.query(ScheduledAction).filter_by(id=action_id).first()
+            if not action:
+                return {"success": False, "error": "Action not found"}
+
+            result = await self._execute_action(action, db)
+            db.commit()
+            return result
+
+        except Exception as e:
+            db.rollback()
+            return {"success": False, "error": str(e)}
+        finally:
+            db.close()
+
+
+# Singleton instance
+_scheduler_instance: Optional[SchedulerService] = None
+
+
+def get_scheduler() -> SchedulerService:
+    """
+    Get the scheduler singleton instance.
+
+    Returns:
+        SchedulerService instance
+    """
+    global _scheduler_instance
+    if _scheduler_instance is None:
+        _scheduler_instance = SchedulerService()
+    return _scheduler_instance
+
+
+async def start_scheduler():
+    """Start the global scheduler instance."""
+    scheduler = get_scheduler()
+    await scheduler.start()
+
+
+def stop_scheduler():
+    """Stop the global scheduler instance."""
+    scheduler = get_scheduler()
+    scheduler.stop()

backend/services/slmm_client.py

@@ -0,0 +1,423 @@
+"""
+SLMM API Client Wrapper
+
+Provides a clean interface for Terra-View to interact with the SLMM backend.
+All SLM operations should go through this client instead of direct HTTP calls.
+
+SLMM (Sound Level Meter Manager) is a separate service running on port 8100
+that handles TCP/FTP communication with Rion NL-43/NL-53 devices.
+"""
+
+import httpx
+from typing import Optional, Dict, Any, List
+from datetime import datetime
+import json
+
+
+# SLMM backend base URLs
+SLMM_BASE_URL = "http://localhost:8100"
+SLMM_API_BASE = f"{SLMM_BASE_URL}/api/nl43"
+
+
+class SLMMClientError(Exception):
+    """Base exception for SLMM client errors."""
+    pass
+
+
+class SLMMConnectionError(SLMMClientError):
+    """Raised when cannot connect to SLMM backend."""
+    pass
+
+
+class SLMMDeviceError(SLMMClientError):
+    """Raised when device operation fails."""
+    pass
+
+
+class SLMMClient:
+    """
+    Client for interacting with SLMM backend.
+
+    Usage:
+        client = SLMMClient()
+        units = await client.get_all_units()
+        status = await client.get_unit_status("nl43-001")
+        await client.start_recording("nl43-001", config={...})
+    """
+
+    def __init__(self, base_url: str = SLMM_BASE_URL, timeout: float = 30.0):
+        self.base_url = base_url
+        self.api_base = f"{base_url}/api/nl43"
+        self.timeout = timeout
+
+    async def _request(
+        self,
+        method: str,
+        endpoint: str,
+        data: Optional[Dict] = None,
+        params: Optional[Dict] = None,
+    ) -> Dict[str, Any]:
+        """
+        Make an HTTP request to SLMM backend.
+
+        Args:
+            method: HTTP method (GET, POST, PUT, DELETE)
+            endpoint: API endpoint (e.g., "/units", "/{unit_id}/status")
+            data: JSON body for POST/PUT requests
+            params: Query parameters
+
+        Returns:
+            Response JSON as dict
+
+        Raises:
+            SLMMConnectionError: Cannot reach SLMM
+            SLMMDeviceError: Device operation failed
+        """
+        url = f"{self.api_base}{endpoint}"
+
+        try:
+            async with httpx.AsyncClient(timeout=self.timeout) as client:
+                response = await client.request(
+                    method=method,
+                    url=url,
+                    json=data,
+                    params=params,
+                )
+                response.raise_for_status()
+
+                # Handle empty responses
+                if not response.content:
+                    return {}
+
+                return response.json()
+
+        except httpx.ConnectError as e:
+            raise SLMMConnectionError(
+                f"Cannot connect to SLMM backend at {self.base_url}. "
+                f"Is SLMM running? Error: {str(e)}"
+            )
+        except httpx.HTTPStatusError as e:
+            error_detail = "Unknown error"
+            try:
+                error_data = e.response.json()
+                error_detail = error_data.get("detail", str(error_data))
+            except:
+                error_detail = e.response.text or str(e)
+
+            raise SLMMDeviceError(
+                f"SLMM operation failed: {error_detail}"
+            )
+        except Exception as e:
+            raise SLMMClientError(f"Unexpected error: {str(e)}")
+
+    # ========================================================================
+    # Unit Management
+    # ========================================================================
+
+    async def get_all_units(self) -> List[Dict[str, Any]]:
+        """
+        Get all configured SLM units from SLMM.
+
+        Returns:
+            List of unit dicts with id, config, and status
+        """
+        # SLMM doesn't have a /units endpoint yet, so we'll need to add this
+        # For now, return empty list or implement when SLMM endpoint is ready
+        try:
+            response = await self._request("GET", "/units")
+            return response.get("units", [])
+        except SLMMClientError:
+            # Endpoint may not exist yet
+            return []
+
+    async def get_unit_config(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Get unit configuration from SLMM cache.
+
+        Args:
+            unit_id: Unit identifier (e.g., "nl43-001")
+
+        Returns:
+            Config dict with host, tcp_port, ftp_port, etc.
+        """
+        return await self._request("GET", f"/{unit_id}/config")
+
+    async def update_unit_config(
+        self,
+        unit_id: str,
+        host: Optional[str] = None,
+        tcp_port: Optional[int] = None,
+        ftp_port: Optional[int] = None,
+        ftp_username: Optional[str] = None,
+        ftp_password: Optional[str] = None,
+    ) -> Dict[str, Any]:
+        """
+        Update unit configuration in SLMM cache.
+
+        Args:
+            unit_id: Unit identifier
+            host: Device IP address
+            tcp_port: TCP control port (default: 2255)
+            ftp_port: FTP data port (default: 21)
+            ftp_username: FTP username
+            ftp_password: FTP password
+
+        Returns:
+            Updated config
+        """
+        config = {}
+        if host is not None:
+            config["host"] = host
+        if tcp_port is not None:
+            config["tcp_port"] = tcp_port
+        if ftp_port is not None:
+            config["ftp_port"] = ftp_port
+        if ftp_username is not None:
+            config["ftp_username"] = ftp_username
+        if ftp_password is not None:
+            config["ftp_password"] = ftp_password
+
+        return await self._request("PUT", f"/{unit_id}/config", data=config)
+
+    # ========================================================================
+    # Status & Monitoring
+    # ========================================================================
+
+    async def get_unit_status(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Get cached status snapshot from SLMM.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Status dict with measurement_state, lp, leq, battery, etc.
+        """
+        return await self._request("GET", f"/{unit_id}/status")
+
+    async def get_live_data(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Request fresh data from device (DOD command).
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Live data snapshot
+        """
+        return await self._request("GET", f"/{unit_id}/live")
+
+    # ========================================================================
+    # Recording Control
+    # ========================================================================
+
+    async def start_recording(
+        self,
+        unit_id: str,
+        config: Optional[Dict[str, Any]] = None,
+    ) -> Dict[str, Any]:
+        """
+        Start recording on a unit.
+
+        Args:
+            unit_id: Unit identifier
+            config: Optional recording config (interval, settings, etc.)
+
+        Returns:
+            Response from SLMM with success status
+        """
+        return await self._request("POST", f"/{unit_id}/start", data=config or {})
+
+    async def stop_recording(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Stop recording on a unit.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Response from SLMM
+        """
+        return await self._request("POST", f"/{unit_id}/stop")
+
+    async def pause_recording(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Pause recording on a unit.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Response from SLMM
+        """
+        return await self._request("POST", f"/{unit_id}/pause")
+
+    async def resume_recording(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Resume paused recording on a unit.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Response from SLMM
+        """
+        return await self._request("POST", f"/{unit_id}/resume")
+
+    async def reset_data(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Reset measurement data on a unit.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Response from SLMM
+        """
+        return await self._request("POST", f"/{unit_id}/reset")
+
+    # ========================================================================
+    # Device Settings
+    # ========================================================================
+
+    async def get_frequency_weighting(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Get frequency weighting setting (A, C, or Z).
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Dict with current weighting
+        """
+        return await self._request("GET", f"/{unit_id}/frequency-weighting")
+
+    async def set_frequency_weighting(
+        self,
+        unit_id: str,
+        weighting: str,
+    ) -> Dict[str, Any]:
+        """
+        Set frequency weighting (A, C, or Z).
+
+        Args:
+            unit_id: Unit identifier
+            weighting: "A", "C", or "Z"
+
+        Returns:
+            Confirmation response
+        """
+        return await self._request(
+            "PUT",
+            f"/{unit_id}/frequency-weighting",
+            data={"weighting": weighting},
+        )
+
+    async def get_time_weighting(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Get time weighting setting (F, S, or I).
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Dict with current time weighting
+        """
+        return await self._request("GET", f"/{unit_id}/time-weighting")
+
+    async def set_time_weighting(
+        self,
+        unit_id: str,
+        weighting: str,
+    ) -> Dict[str, Any]:
+        """
+        Set time weighting (F=Fast, S=Slow, I=Impulse).
+
+        Args:
+            unit_id: Unit identifier
+            weighting: "F", "S", or "I"
+
+        Returns:
+            Confirmation response
+        """
+        return await self._request(
+            "PUT",
+            f"/{unit_id}/time-weighting",
+            data={"weighting": weighting},
+        )
+
+    async def get_all_settings(self, unit_id: str) -> Dict[str, Any]:
+        """
+        Get all device settings.
+
+        Args:
+            unit_id: Unit identifier
+
+        Returns:
+            Dict with all settings
+        """
+        return await self._request("GET", f"/{unit_id}/settings")
+
+    # ========================================================================
+    # Data Download (Future)
+    # ========================================================================
+
+    async def download_files(
+        self,
+        unit_id: str,
+        destination_path: str,
+        files: Optional[List[str]] = None,
+    ) -> Dict[str, Any]:
+        """
+        Download files from unit via FTP.
+
+        NOTE: This endpoint doesn't exist in SLMM yet. Will need to implement.
+
+        Args:
+            unit_id: Unit identifier
+            destination_path: Local path to save files
+            files: List of filenames to download, or None for all
+
+        Returns:
+            Dict with downloaded files list and metadata
+        """
+        data = {
+            "destination_path": destination_path,
+            "files": files or "all",
+        }
+        return await self._request("POST", f"/{unit_id}/ftp/download", data=data)
+
+    # ========================================================================
+    # Health Check
+    # ========================================================================
+
+    async def health_check(self) -> bool:
+        """
+        Check if SLMM backend is reachable.
+
+        Returns:
+            True if SLMM is responding, False otherwise
+        """
+        try:
+            async with httpx.AsyncClient(timeout=5.0) as client:
+                response = await client.get(f"{self.base_url}/health")
+                return response.status_code == 200
+        except:
+            return False
+
+
+# Singleton instance for convenience
+_default_client: Optional[SLMMClient] = None
+
+
+def get_slmm_client() -> SLMMClient:
+    """
+    Get the default SLMM client instance.
+
+    Returns:
+        SLMMClient instance
+    """
+    global _default_client
+    if _default_client is None:
+        _default_client = SLMMClient()
+    return _default_client

backend/services/snapshot.py

@@ -1,8 +1,8 @@
 from datetime import datetime, timezone
 from sqlalchemy.orm import Session
 
-from app.seismo.database import get_db_session
-from app.seismo.models import Emitter, RosterUnit, IgnoredUnit
+from backend.database import get_db_session
+from backend.models import Emitter, RosterUnit, IgnoredUnit
 
 
 def ensure_utc(dt):
@@ -60,7 +60,7 @@ def emit_status_snapshot():
     db = get_db_session()
     try:
         # Get user preferences for status thresholds
-        from app.seismo.models import UserPreferences
+        from backend.models import UserPreferences
         prefs = db.query(UserPreferences).filter_by(id=1).first()
         status_ok_threshold = prefs.status_ok_threshold_hours if prefs else 12
         status_pending_threshold = prefs.status_pending_threshold_hours if prefs else 24

docker-compose.yml

@@ -1,25 +1,22 @@
 services:
 
-  # --- TERRA-VIEW (PRODUCTION) ---
-  # Unified application: UI + Seismograph logic + SLM dashboard/proxy
-  # Only external HTTP dependency: SLMM backend for NL-43 device communication
+  # --- TERRA-VIEW PRODUCTION ---
   terra-view-prod:
-    build:
-      context: .
-      dockerfile: Dockerfile.terraview
+    build: .
     container_name: terra-view
-    network_mode: host
+    ports:
+      - "8001:8001"
     volumes:
       - ./data:/app/data
     environment:
       - PYTHONUNBUFFERED=1
       - ENVIRONMENT=production
-      - PORT=8001
-      - SLMM_API_URL=http://localhost:8100    # Points to SLMM container
+      - SLMM_BASE_URL=http://host.docker.internal:8100
     restart: unless-stopped
     depends_on:
       - slmm
-    command: python3 -m app.main              # Runs full Terra-View (UI + seismo + SLM)
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8001/health"]
       interval: 30s
@@ -27,42 +24,37 @@ services:
       retries: 3
       start_period: 40s
 
-  # --- TERRA-VIEW (DEVELOPMENT) ---
-  terra-view-dev:
-    build:
-      context: .
-      dockerfile: Dockerfile.terraview
-    container_name: terra-view-dev
-    network_mode: host
-    volumes:
-      - ./data-dev:/app/data
-    environment:
-      - PYTHONUNBUFFERED=1
-      - ENVIRONMENT=development
-      - PORT=1001
-      - SLMM_API_URL=http://localhost:8100
-    restart: unless-stopped
-    depends_on:
-      - slmm
-    profiles:
-      - dev
-    command: python3 -m app.main
-    healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:1001/health"]
-      interval: 30s
-      timeout: 10s
-      retries: 3
-      start_period: 40s
+  # --- TERRA-VIEW DEVELOPMENT ---
+  # terra-view-dev:
+  #   build: .
+  #   container_name: terra-view-dev
+  #   ports:
+  #     - "1001:8001"
+  #   volumes:
+  #     - ./data-dev:/app/data
+  #   environment:
+  #     - PYTHONUNBUFFERED=1
+  #     - ENVIRONMENT=development
+  #     - SLMM_BASE_URL=http://slmm:8100
+  #   restart: unless-stopped
+  #   depends_on:
+  #     - slmm
+  #   healthcheck:
+  #     test: ["CMD", "curl", "-f", "http://localhost:8001/health"]
+  #     interval: 30s
+  #     timeout: 10s
+  #     retries: 3
+  #     start_period: 40s
 
   # --- SLMM (Sound Level Meter Manager) ---
   slmm:
     build:
-      context: .
-      dockerfile: Dockerfile.slm
+      context: ../slmm
+      dockerfile: Dockerfile
     container_name: slmm
     network_mode: host
     volumes:
-      - ./data-slm:/app/data
+      - ../slmm/data:/app/data
     environment:
       - PYTHONUNBUFFERED=1
       - PORT=8100
@@ -78,4 +70,3 @@ services:
 volumes:
   data:
   data-dev:
-  data-slm:

rename_unit.py

@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+"""
+Script to rename a unit ID in the database.
+This updates the unit across all tables with proper foreign key handling.
+"""
+
+import sys
+from sqlalchemy import create_engine, text
+from sqlalchemy.orm import sessionmaker
+
+DATABASE_URL = "sqlite:///data/sfm.db"
+
+def rename_unit(old_id: str, new_id: str):
+    """
+    Rename a unit ID across all relevant tables.
+
+    Args:
+        old_id: Current unit ID (e.g., "SLM4301")
+        new_id: New unit ID (e.g., "SLM-43-01")
+    """
+    engine = create_engine(DATABASE_URL)
+    Session = sessionmaker(bind=engine)
+    session = Session()
+
+    try:
+        # Check if old unit exists
+        result = session.execute(
+            text("SELECT id, device_type FROM roster WHERE id = :old_id"),
+            {"old_id": old_id}
+        ).fetchone()
+
+        if not result:
+            print(f"❌ Error: Unit '{old_id}' not found in roster")
+            return False
+
+        device_type = result[1]
+        print(f"✓ Found unit '{old_id}' (device_type: {device_type})")
+
+        # Check if new ID already exists
+        result = session.execute(
+            text("SELECT id FROM roster WHERE id = :new_id"),
+            {"new_id": new_id}
+        ).fetchone()
+
+        if result:
+            print(f"❌ Error: Unit ID '{new_id}' already exists")
+            return False
+
+        print(f"\n🔄 Renaming '{old_id}' → '{new_id}'...\n")
+
+        # Update roster table (primary)
+        session.execute(
+            text("UPDATE roster SET id = :new_id WHERE id = :old_id"),
+            {"new_id": new_id, "old_id": old_id}
+        )
+        print(f"  ✓ Updated roster")
+
+        # Update emitters table
+        result = session.execute(
+            text("UPDATE emitters SET id = :new_id WHERE id = :old_id"),
+            {"new_id": new_id, "old_id": old_id}
+        )
+        if result.rowcount > 0:
+            print(f"  ✓ Updated emitters ({result.rowcount} rows)")
+
+        # Update unit_history table
+        result = session.execute(
+            text("UPDATE unit_history SET unit_id = :new_id WHERE unit_id = :old_id"),
+            {"new_id": new_id, "old_id": old_id}
+        )
+        if result.rowcount > 0:
+            print(f"  ✓ Updated unit_history ({result.rowcount} rows)")
+
+        # Update deployed_with_modem_id references
+        result = session.execute(
+            text("UPDATE roster SET deployed_with_modem_id = :new_id WHERE deployed_with_modem_id = :old_id"),
+            {"new_id": new_id, "old_id": old_id}
+        )
+        if result.rowcount > 0:
+            print(f"  ✓ Updated modem references ({result.rowcount} rows)")
+
+        # Update unit_assignments table (if exists)
+        try:
+            result = session.execute(
+                text("UPDATE unit_assignments SET unit_id = :new_id WHERE unit_id = :old_id"),
+                {"new_id": new_id, "old_id": old_id}
+            )
+            if result.rowcount > 0:
+                print(f"  ✓ Updated unit_assignments ({result.rowcount} rows)")
+        except Exception:
+            pass  # Table may not exist
+
+        # Update recording_sessions table (if exists)
+        try:
+            result = session.execute(
+                text("UPDATE recording_sessions SET unit_id = :new_id WHERE unit_id = :old_id"),
+                {"new_id": new_id, "old_id": old_id}
+            )
+            if result.rowcount > 0:
+                print(f"  ✓ Updated recording_sessions ({result.rowcount} rows)")
+        except Exception:
+            pass  # Table may not exist
+
+        # Commit all changes
+        session.commit()
+        print(f"\n✅ Successfully renamed unit '{old_id}' to '{new_id}'")
+        return True
+
+    except Exception as e:
+        session.rollback()
+        print(f"\n❌ Error during rename: {e}")
+        return False
+    finally:
+        session.close()
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 3:
+        print("Usage: python rename_unit.py <old_id> <new_id>")
+        print("Example: python rename_unit.py SLM4301 SLM-43-01")
+        sys.exit(1)
+
+    old_id = sys.argv[1]
+    new_id = sys.argv[2]
+
+    print(f"Unit Renaming Tool")
+    print(f"=" * 50)
+    print(f"Old ID: {old_id}")
+    print(f"New ID: {new_id}")
+    print(f"=" * 50)
+
+    confirm = input(f"\nAre you sure you want to rename '{old_id}' to '{new_id}'? (yes/no): ")
+    if confirm.lower() != 'yes':
+        print("❌ Rename cancelled")
+        sys.exit(0)
+
+    success = rename_unit(old_id, new_id)
+    sys.exit(0 if success else 1)

templates/base.html

@@ -127,7 +127,7 @@
                     Sound Level Meters
                 </a>
 
-                <a href="#" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 opacity-50 cursor-not-allowed">
+                <a href="/projects" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 {% if request.url.path.startswith('/projects') %}bg-gray-100 dark:bg-gray-700{% endif %}">
                     <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path>
                     </svg>

templates/nrl_detail.html

@@ -0,0 +1,563 @@
+{% extends "base.html" %}
+
+{% block title %}{{ location.name }} - NRL Detail{% endblock %}
+
+{% block content %}
+<!-- Breadcrumb Navigation -->
+<div class="mb-6">
+    <nav class="flex items-center space-x-2 text-sm">
+        <a href="/projects" class="text-seismo-orange hover:text-seismo-navy flex items-center">
+            <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
+            </svg>
+            Projects
+        </a>
+        <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
+        </svg>
+        <a href="/projects/{{ project_id }}" class="text-seismo-orange hover:text-seismo-navy">
+            {{ project.name }}
+        </a>
+        <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
+        </svg>
+        <span class="text-gray-900 dark:text-white font-medium">{{ location.name }}</span>
+    </nav>
+</div>
+
+<!-- Header -->
+<div class="mb-8">
+    <div class="flex justify-between items-start">
+        <div>
+            <h1 class="text-3xl font-bold text-gray-900 dark:text-white flex items-center">
+                <svg class="w-8 h-8 mr-3 text-seismo-orange" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"></path>
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"></path>
+                </svg>
+                {{ location.name }}
+            </h1>
+            <p class="text-gray-600 dark:text-gray-400 mt-1">
+                Noise Recording Location • {{ project.name }}
+            </p>
+        </div>
+        <div class="flex gap-2">
+            {% if assigned_unit %}
+                <span class="px-3 py-1 rounded-full text-sm font-medium bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300">
+                    <svg class="w-4 h-4 inline mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path>
+                    </svg>
+                    Unit Assigned
+                </span>
+            {% else %}
+                <span class="px-3 py-1 rounded-full text-sm font-medium bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-300">
+                    No Unit Assigned
+                </span>
+            {% endif %}
+        </div>
+    </div>
+</div>
+
+<!-- Tab Navigation -->
+<div class="mb-6 border-b border-gray-200 dark:border-gray-700">
+    <nav class="flex space-x-6">
+        <button onclick="switchTab('overview')"
+                data-tab="overview"
+                class="tab-button px-4 py-3 border-b-2 font-medium text-sm transition-colors border-seismo-orange text-seismo-orange">
+            Overview
+        </button>
+        <button onclick="switchTab('settings')"
+                data-tab="settings"
+                class="tab-button px-4 py-3 border-b-2 border-transparent font-medium text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:border-gray-300 dark:hover:border-gray-600 transition-colors">
+            Settings
+        </button>
+        {% if assigned_unit %}
+        <button onclick="switchTab('command')"
+                data-tab="command"
+                class="tab-button px-4 py-3 border-b-2 border-transparent font-medium text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:border-gray-300 dark:hover:border-gray-600 transition-colors">
+            Command Center
+        </button>
+        {% endif %}
+        <button onclick="switchTab('sessions')"
+                data-tab="sessions"
+                class="tab-button px-4 py-3 border-b-2 border-transparent font-medium text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:border-gray-300 dark:hover:border-gray-600 transition-colors">
+            Recording Sessions
+        </button>
+        <button onclick="switchTab('data')"
+                data-tab="data"
+                class="tab-button px-4 py-3 border-b-2 border-transparent font-medium text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:border-gray-300 dark:hover:border-gray-600 transition-colors">
+            Data Files
+        </button>
+    </nav>
+</div>
+
+<!-- Tab Content -->
+<div id="tab-content">
+    <!-- Overview Tab -->
+    <div id="overview-tab" class="tab-panel">
+        <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
+            <!-- Location Details Card -->
+            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Location Details</h2>
+                <div class="space-y-4">
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Name</div>
+                        <div class="text-lg font-medium text-gray-900 dark:text-white">{{ location.name }}</div>
+                    </div>
+                    {% if location.description %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Description</div>
+                        <div class="text-gray-900 dark:text-white">{{ location.description }}</div>
+                    </div>
+                    {% endif %}
+                    {% if location.address %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Address</div>
+                        <div class="text-gray-900 dark:text-white">{{ location.address }}</div>
+                    </div>
+                    {% endif %}
+                    {% if location.coordinates %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Coordinates</div>
+                        <div class="text-gray-900 dark:text-white font-mono text-sm">{{ location.coordinates }}</div>
+                    </div>
+                    {% endif %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Created</div>
+                        <div class="text-gray-900 dark:text-white">{{ location.created_at.strftime('%Y-%m-%d %H:%M') if location.created_at else 'N/A' }}</div>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Assignment Card -->
+            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Unit Assignment</h2>
+                {% if assigned_unit %}
+                <div class="space-y-4">
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Assigned Unit</div>
+                        <div class="text-lg font-medium text-gray-900 dark:text-white">
+                            <a href="/slm/{{ assigned_unit.id }}?from_project={{ project_id }}&from_nrl={{ location_id }}" class="text-seismo-orange hover:text-seismo-navy">
+                                {{ assigned_unit.id }}
+                            </a>
+                        </div>
+                    </div>
+                    {% if assigned_unit.slm_model %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Model</div>
+                        <div class="text-gray-900 dark:text-white">{{ assigned_unit.slm_model }}</div>
+                    </div>
+                    {% endif %}
+                    {% if assignment %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Assigned Since</div>
+                        <div class="text-gray-900 dark:text-white">{{ assignment.assigned_at.strftime('%Y-%m-%d %H:%M') if assignment.assigned_at else 'N/A' }}</div>
+                    </div>
+                    {% if assignment.notes %}
+                    <div>
+                        <div class="text-sm text-gray-600 dark:text-gray-400">Notes</div>
+                        <div class="text-gray-900 dark:text-white text-sm">{{ assignment.notes }}</div>
+                    </div>
+                    {% endif %}
+                    {% endif %}
+                    <div class="pt-2">
+                        <button onclick="unassignUnit('{{ assignment.id }}')"
+                                class="px-4 py-2 bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-300 rounded-lg hover:bg-amber-200 dark:hover:bg-amber-900/50 transition-colors">
+                            Unassign Unit
+                        </button>
+                    </div>
+                </div>
+                {% else %}
+                <div class="text-center py-8">
+                    <svg class="w-16 h-16 mx-auto mb-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"></path>
+                    </svg>
+                    <p class="text-gray-500 dark:text-gray-400 mb-4">No unit currently assigned</p>
+                    <button onclick="openAssignModal()"
+                            class="px-4 py-2 bg-seismo-orange text-white rounded-lg hover:bg-seismo-navy transition-colors">
+                        Assign a Unit
+                    </button>
+                </div>
+                {% endif %}
+            </div>
+        </div>
+
+        <!-- Stats Cards -->
+        <div class="grid grid-cols-1 md:grid-cols-3 gap-6 mt-6">
+            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+                <div class="flex items-center justify-between">
+                    <div>
+                        <p class="text-sm text-gray-600 dark:text-gray-400">Total Sessions</p>
+                        <p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">{{ session_count }}</p>
+                    </div>
+                    <div class="w-12 h-12 bg-blue-100 dark:bg-blue-900/30 rounded-lg flex items-center justify-center">
+                        <svg class="w-6 h-6 text-blue-600 dark:text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19V6l12-3v13M9 19c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zm12-3c0 1.105-1.343 2-3 2s-3-.895-3-2 1.343-2 3-2 3 .895 3 2zM9 10l12-3"></path>
+                        </svg>
+                    </div>
+                </div>
+            </div>
+
+            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+                <div class="flex items-center justify-between">
+                    <div>
+                        <p class="text-sm text-gray-600 dark:text-gray-400">Data Files</p>
+                        <p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">{{ file_count }}</p>
+                    </div>
+                    <div class="w-12 h-12 bg-green-100 dark:bg-green-900/30 rounded-lg flex items-center justify-center">
+                        <svg class="w-6 h-6 text-green-600 dark:text-green-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z"></path>
+                        </svg>
+                    </div>
+                </div>
+            </div>
+
+            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+                <div class="flex items-center justify-between">
+                    <div>
+                        <p class="text-sm text-gray-600 dark:text-gray-400">Active Session</p>
+                        <p class="text-lg font-semibold text-gray-900 dark:text-white mt-2">
+                            {% if active_session %}
+                                <span class="text-green-600 dark:text-green-400">Recording</span>
+                            {% else %}
+                                <span class="text-gray-500">Idle</span>
+                            {% endif %}
+                        </p>
+                    </div>
+                    <div class="w-12 h-12 bg-purple-100 dark:bg-purple-900/30 rounded-lg flex items-center justify-center">
+                        <svg class="w-6 h-6 text-purple-600 dark:text-purple-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path>
+                        </svg>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- Settings Tab -->
+    <div id="settings-tab" class="tab-panel hidden">
+        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-6">Location Settings</h2>
+
+            <form id="location-settings-form" class="space-y-6">
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Name</label>
+                    <input type="text" id="settings-name" value="{{ location.name }}"
+                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white" required>
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Description</label>
+                    <textarea id="settings-description" rows="3"
+                              class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">{{ location.description or '' }}</textarea>
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Address</label>
+                    <input type="text" id="settings-address" value="{{ location.address or '' }}"
+                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Coordinates</label>
+                    <input type="text" id="settings-coordinates" value="{{ location.coordinates or '' }}"
+                           placeholder="40.7128,-74.0060"
+                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">
+                    <p class="text-xs text-gray-500 mt-1">Format: latitude,longitude</p>
+                </div>
+
+                <div id="settings-error" class="hidden text-sm text-red-600"></div>
+
+                <div class="flex justify-end gap-3 pt-2">
+                    <button type="button" onclick="window.location.href='/projects/{{ project_id }}'"
+                            class="px-6 py-2 border border-gray-300 dark:border-gray-600 rounded-lg text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
+                        Cancel
+                    </button>
+                    <button type="submit"
+                            class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium">
+                        Save Changes
+                    </button>
+                </div>
+            </form>
+        </div>
+    </div>
+
+    <!-- Command Center Tab -->
+    {% if assigned_unit %}
+    <div id="command-tab" class="tab-panel hidden">
+        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-6">
+                SLM Command Center - {{ assigned_unit.id }}
+            </h2>
+
+            <div id="slm-command-center"
+                 hx-get="/api/slm-dashboard/live-view/{{ assigned_unit.id if assigned_unit else '' }}"
+                 hx-trigger="load"
+                 hx-swap="innerHTML">
+                <div class="text-center py-8 text-gray-500">
+                    <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-seismo-orange mx-auto mb-4"></div>
+                    <p>Loading command center...</p>
+                </div>
+            </div>
+        </div>
+    </div>
+    {% endif %}
+
+    <!-- Recording Sessions Tab -->
+    <div id="sessions-tab" class="tab-panel hidden">
+        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+            <div class="flex items-center justify-between mb-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Recording Sessions</h2>
+                {% if assigned_unit %}
+                <button onclick="openScheduleModal()"
+                        class="px-4 py-2 bg-seismo-orange text-white rounded-lg hover:bg-seismo-navy transition-colors">
+                    Schedule Session
+                </button>
+                {% endif %}
+            </div>
+
+            <div id="sessions-list"
+                 hx-get="/api/projects/{{ project_id }}/nrl/{{ location_id }}/sessions"
+                 hx-trigger="load, every 30s"
+                 hx-swap="innerHTML">
+                <div class="text-center py-8 text-gray-500">Loading sessions...</div>
+            </div>
+        </div>
+    </div>
+
+    <!-- Data Files Tab -->
+    <div id="data-tab" class="tab-panel hidden">
+        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
+            <div class="flex items-center justify-between mb-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Data Files</h2>
+                <div class="text-sm text-gray-500">
+                    <span class="font-medium">{{ file_count }}</span> files
+                </div>
+            </div>
+
+            <div id="data-files-list"
+                 hx-get="/api/projects/{{ project_id }}/nrl/{{ location_id }}/files"
+                 hx-trigger="load"
+                 hx-swap="innerHTML">
+                <div class="text-center py-8 text-gray-500">Loading data files...</div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Assign Unit Modal -->
+<div id="assign-modal" class="hidden fixed inset-0 bg-black bg-opacity-50 z-50 flex items-center justify-center">
+    <div class="bg-white dark:bg-slate-800 rounded-xl shadow-2xl w-full max-w-2xl max-h-[90vh] overflow-y-auto m-4">
+        <div class="p-6 border-b border-gray-200 dark:border-gray-700 flex items-center justify-between">
+            <div>
+                <h2 class="text-2xl font-bold text-gray-900 dark:text-white">Assign Unit</h2>
+                <p class="text-gray-600 dark:text-gray-400 mt-1">Attach a sound level meter to this location</p>
+            </div>
+            <button onclick="closeAssignModal()" class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200">
+                <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
+                </svg>
+            </button>
+        </div>
+
+        <form id="assign-form" class="p-6 space-y-4">
+            <div>
+                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Available Units</label>
+                <select id="assign-unit-id" name="unit_id"
+                        class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white" required>
+                    <option value="">Loading units...</option>
+                </select>
+                <p id="assign-empty" class="hidden text-xs text-gray-500 mt-2">No available units for this location type.</p>
+            </div>
+
+            <div>
+                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Notes</label>
+                <textarea id="assign-notes" name="notes" rows="2"
+                          class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"></textarea>
+            </div>
+
+            <div id="assign-error" class="hidden text-sm text-red-600"></div>
+
+            <div class="flex justify-end gap-3 pt-2">
+                <button type="button" onclick="closeAssignModal()"
+                        class="px-6 py-2 border border-gray-300 dark:border-gray-600 rounded-lg text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
+                    Cancel
+                </button>
+                <button type="submit"
+                        class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium">
+                    Assign Unit
+                </button>
+            </div>
+        </form>
+    </div>
+</div>
+
+<script>
+const projectId = "{{ project_id }}";
+const locationId = "{{ location_id }}";
+
+// Tab switching
+function switchTab(tabName) {
+    // Hide all tab panels
+    document.querySelectorAll('.tab-panel').forEach(panel => {
+        panel.classList.add('hidden');
+    });
+
+    // Reset all tab buttons
+    document.querySelectorAll('.tab-button').forEach(button => {
+        button.classList.remove('border-seismo-orange', 'text-seismo-orange');
+        button.classList.add('border-transparent', 'text-gray-600', 'dark:text-gray-400');
+    });
+
+    // Show selected tab panel
+    const panel = document.getElementById(`${tabName}-tab`);
+    if (panel) {
+        panel.classList.remove('hidden');
+    }
+
+    // Highlight selected tab button
+    const button = document.querySelector(`[data-tab="${tabName}"]`);
+    if (button) {
+        button.classList.remove('border-transparent', 'text-gray-600', 'dark:text-gray-400');
+        button.classList.add('border-seismo-orange', 'text-seismo-orange');
+    }
+}
+
+// Location settings form submission
+document.getElementById('location-settings-form').addEventListener('submit', async function(e) {
+    e.preventDefault();
+
+    const payload = {
+        name: document.getElementById('settings-name').value.trim(),
+        description: document.getElementById('settings-description').value.trim() || null,
+        address: document.getElementById('settings-address').value.trim() || null,
+        coordinates: document.getElementById('settings-coordinates').value.trim() || null,
+    };
+
+    try {
+        const response = await fetch(`/api/projects/${projectId}/locations/${locationId}`, {
+            method: 'PUT',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify(payload)
+        });
+
+        if (!response.ok) {
+            const data = await response.json().catch(() => ({}));
+            throw new Error(data.detail || 'Failed to update location');
+        }
+
+        window.location.reload();
+    } catch (err) {
+        const errorEl = document.getElementById('settings-error');
+        errorEl.textContent = err.message || 'Failed to update location.';
+        errorEl.classList.remove('hidden');
+    }
+});
+
+// Assign modal functions
+function openAssignModal() {
+    const modal = document.getElementById('assign-modal');
+    modal.classList.remove('hidden');
+    loadAvailableUnits();
+}
+
+function closeAssignModal() {
+    document.getElementById('assign-modal').classList.add('hidden');
+}
+
+async function loadAvailableUnits() {
+    try {
+        const response = await fetch(`/api/projects/${projectId}/available-units?location_type=sound`);
+        if (!response.ok) {
+            throw new Error('Failed to load available units');
+        }
+        const data = await response.json();
+        const select = document.getElementById('assign-unit-id');
+        select.innerHTML = '<option value="">Select a unit</option>';
+
+        if (!data.length) {
+            document.getElementById('assign-empty').classList.remove('hidden');
+            return;
+        }
+
+        data.forEach(unit => {
+            const option = document.createElement('option');
+            option.value = unit.id;
+            option.textContent = `${unit.id} • ${unit.model || unit.device_type}`;
+            select.appendChild(option);
+        });
+    } catch (err) {
+        const errorEl = document.getElementById('assign-error');
+        errorEl.textContent = err.message || 'Failed to load units.';
+        errorEl.classList.remove('hidden');
+    }
+}
+
+document.getElementById('assign-form').addEventListener('submit', async function(e) {
+    e.preventDefault();
+
+    const unitId = document.getElementById('assign-unit-id').value;
+    const notes = document.getElementById('assign-notes').value.trim();
+
+    if (!unitId) {
+        document.getElementById('assign-error').textContent = 'Select a unit to assign.';
+        document.getElementById('assign-error').classList.remove('hidden');
+        return;
+    }
+
+    try {
+        const formData = new FormData();
+        formData.append('unit_id', unitId);
+        formData.append('notes', notes);
+
+        const response = await fetch(`/api/projects/${projectId}/locations/${locationId}/assign`, {
+            method: 'POST',
+            body: formData
+        });
+
+        if (!response.ok) {
+            const data = await response.json().catch(() => ({}));
+            throw new Error(data.detail || 'Failed to assign unit');
+        }
+
+        window.location.reload();
+    } catch (err) {
+        const errorEl = document.getElementById('assign-error');
+        errorEl.textContent = err.message || 'Failed to assign unit.';
+        errorEl.classList.remove('hidden');
+    }
+});
+
+async function unassignUnit(assignmentId) {
+    if (!confirm('Unassign this unit from the location?')) return;
+
+    try {
+        const response = await fetch(`/api/projects/${projectId}/assignments/${assignmentId}/unassign`, {
+            method: 'POST'
+        });
+
+        if (!response.ok) {
+            const data = await response.json().catch(() => ({}));
+            throw new Error(data.detail || 'Failed to unassign unit');
+        }
+
+        window.location.reload();
+    } catch (err) {
+        alert(err.message || 'Failed to unassign unit.');
+    }
+}
+
+// Keyboard shortcuts
+document.addEventListener('keydown', function(e) {
+    if (e.key === 'Escape') {
+        closeAssignModal();
+    }
+});
+
+// Click outside to close modal
+document.getElementById('assign-modal')?.addEventListener('click', function(e) {
+    if (e.target === this) {
+        closeAssignModal();
+    }
+});
+</script>
+{% endblock %}