Migration cleanup: SLM dashboard restored, db migration

CHANGELOG.md

@@ -1,10 +1,99 @@
 # Changelog
 
-All notable changes to Seismo Fleet Manager will be documented in this file.
+All notable changes to Terra-View 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