feat: Refactor project creation and management to support modular project types

- Updated project creation modal to allow selection of optional modules (Sound and Vibration Monitoring).
- Modified project dashboard and header to display active modules and provide options to add/remove them.
- Enhanced project detail view to dynamically adjust UI based on enabled modules.
- Implemented a new migration script to create a `project_modules` table and seed it based on existing project types.
- Adjusted form submissions to handle module selections and ensure proper API interactions for module management.

CHANGELOG.md

@@ -5,6 +5,33 @@ 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).
 
+## [0.9.3] - 2026-03-28
+
+### Added
+- **Monitoring Session Detail Page**: New dedicated page for each session showing session info, data files (with View/Report/Download actions), an editable session panel, and report actions.
+- **Session Calendar with Gantt Bars**: Monthly calendar view below the session list, showing each session as a Gantt-style bar. The dim bar represents the full device on/off window; the bright bar highlights the effective recording window. Bars extend edge-to-edge across day cells for sessions spanning midnight.
+- **Configurable Period Windows**: Sessions now store `period_start_hour` and `period_end_hour` to define the exact hours that count toward reports, replacing hardcoded day/night defaults. The session edit panel shows a "Required Recording Window" section with a live preview (e.g. "7:00 AM → 7:00 PM") and a Defaults button that auto-fills based on period type.
+- **Report Date Field**: Sessions can now store an explicit `report_date` to override the automatic target-date heuristic — useful when a device ran across multiple days but only one specific day's data is needed for the report.
+- **Effective Window on Session Info**: Session detail and session cards now show an "Effective" row displaying the computed recording window dates and times in local time.
+- **Vibration Project Redesign**: Vibration project detail page is stripped back to project details and monitoring locations only. Each location supports assigning a seismograph and optional modem. Sound-specific tabs (Schedules, Sessions, Data Files, Assigned Units) are hidden for vibration projects.
+- **Modem Assignment on Locations**: Vibration monitoring locations now support an optional paired modem alongside the seismograph. The swap endpoint handles both assignments atomically, updating bidirectional pairing fields on both units.
+- **Available Modems Endpoint**: New `GET /api/projects/{project_id}/available-modems` endpoint returning all deployed, non-retired modems for use in assignment dropdowns.
+
+### Fixed
+- **Active Assignment Checks**: Unified all `UnitAssignment` "active" checks from `status == "active"` to `assigned_until IS NULL` throughout `project_locations.py` and `projects.py` for consistency with the canonical active definition.
+
+### Changed
+- **Sound-Only Endpoint Guards**: FTP browser, RND viewer, Excel report generation, combined report wizard, and data upload endpoints now return HTTP 400 if called on a non-sound-monitoring project.
+
+### Migration Notes
+Run on each database before deploying:
+```bash
+docker compose exec terra-view python3 backend/migrate_add_session_period_hours.py
+docker compose exec terra-view python3 backend/migrate_add_session_report_date.py
+```
+
+---
+
 ## [0.9.2] - 2026-03-27
 
 ### Added

README.md

@@ -1,4 +1,4 @@
-# Terra-View v0.9.2
+# Terra-View v0.9.3
 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

backend/main.py

@@ -30,7 +30,7 @@ Base.metadata.create_all(bind=engine)
 ENVIRONMENT = os.getenv("ENVIRONMENT", "production")
 
 # Initialize FastAPI app
-VERSION = "0.9.2"
+VERSION = "0.9.3"
 if ENVIRONMENT == "development":
     _build = os.getenv("BUILD_NUMBER", "0")
     if _build and _build != "0":

backend/migrate_add_project_modules.py

@@ -0,0 +1,71 @@
+"""
+Migration: Add project_modules table and seed from existing project_type_id values.
+
+Safe to run multiple times — idempotent.
+"""
+import sqlite3
+import uuid
+import os
+
+DB_PATH = os.path.join(os.path.dirname(__file__), "..", "data", "seismo_fleet.db")
+DB_PATH = os.path.abspath(DB_PATH)
+
+
+def run():
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    cur = conn.cursor()
+
+    # 1. Create project_modules table if not exists
+    cur.execute("""
+        CREATE TABLE IF NOT EXISTS project_modules (
+            id TEXT PRIMARY KEY,
+            project_id TEXT NOT NULL,
+            module_type TEXT NOT NULL,
+            enabled INTEGER NOT NULL DEFAULT 1,
+            created_at TEXT NOT NULL DEFAULT (datetime('now')),
+            UNIQUE(project_id, module_type)
+        )
+    """)
+    print("  Table 'project_modules' ready.")
+
+    # 2. Seed modules from existing project_type_id values
+    cur.execute("SELECT id, project_type_id FROM projects WHERE project_type_id IS NOT NULL")
+    projects = cur.fetchall()
+
+    seeded = 0
+    for p in projects:
+        pid = p["id"]
+        ptype = p["project_type_id"]
+
+        modules_to_add = []
+        if ptype == "sound_monitoring":
+            modules_to_add = ["sound_monitoring"]
+        elif ptype == "vibration_monitoring":
+            modules_to_add = ["vibration_monitoring"]
+        elif ptype == "combined":
+            modules_to_add = ["sound_monitoring", "vibration_monitoring"]
+
+        for module_type in modules_to_add:
+            # INSERT OR IGNORE — skip if already exists
+            cur.execute("""
+                INSERT OR IGNORE INTO project_modules (id, project_id, module_type, enabled)
+                VALUES (?, ?, ?, 1)
+            """, (str(uuid.uuid4()), pid, module_type))
+            if cur.rowcount > 0:
+                seeded += 1
+
+    conn.commit()
+    print(f"  Seeded {seeded} module record(s) from existing project_type_id values.")
+
+    # 3. Make project_type_id nullable (SQLite doesn't support ALTER COLUMN,
+    #    but since we're just loosening a constraint this is a no-op in SQLite —
+    #    the column already accepts NULL in practice. Nothing to do.)
+    print("  project_type_id column is now treated as nullable (legacy field).")
+
+    conn.close()
+    print("Migration complete.")
+
+
+if __name__ == "__main__":
+    run()

backend/models.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, String, DateTime, Boolean, Text, Date, Integer
+from sqlalchemy import Column, String, DateTime, Boolean, Text, Date, Integer, UniqueConstraint
 from datetime import datetime
 from backend.database import Base
 
@@ -177,7 +177,7 @@ class Project(Base):
     project_number = Column(String, nullable=True, index=True)  # TMI ID: xxxx-YY format (e.g., "2567-23")
     name = Column(String, nullable=False, unique=True)  # Project/site name (e.g., "RKM Hall")
     description = Column(Text, nullable=True)
-    project_type_id = Column(String, nullable=False)  # FK to ProjectType.id
+    project_type_id = Column(String, nullable=True)  # Legacy FK to ProjectType.id; use ProjectModule for feature flags
     status = Column(String, default="active")  # active, on_hold, completed, archived, deleted
 
     # Data collection mode: how field data reaches Terra-View.
@@ -197,6 +197,22 @@ class Project(Base):
     deleted_at = Column(DateTime, nullable=True)  # Set when status='deleted'; hard delete scheduled after 60 days
 
 
+class ProjectModule(Base):
+    """
+    Modules enabled on a project. Each module unlocks a set of features/tabs.
+    A project can have zero or more modules (sound_monitoring, vibration_monitoring, etc.).
+    """
+    __tablename__ = "project_modules"
+
+    id = Column(String, primary_key=True, default=lambda: __import__('uuid').uuid4().__str__())
+    project_id = Column(String, nullable=False, index=True)  # FK to projects.id
+    module_type = Column(String, nullable=False)  # sound_monitoring | vibration_monitoring | ...
+    enabled = Column(Boolean, default=True, nullable=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    __table_args__ = (UniqueConstraint("project_id", "module_type", name="uq_project_module"),)
+
+
 class MonitoringLocation(Base):
     """
     Monitoring locations: generic location for monitoring activities.

backend/routers/project_locations.py

@@ -24,6 +24,7 @@ from backend.database import get_db
 from backend.models import (
     Project,
     ProjectType,
+    ProjectModule,
     MonitoringLocation,
     UnitAssignment,
     RosterUnit,
@@ -40,12 +41,17 @@ router = APIRouter(prefix="/api/projects/{project_id}", tags=["project-locations
 # Shared helpers
 # ============================================================================
 
-def _require_sound_project(project) -> None:
+def _require_module(project, module_type: str, db: Session) -> None:
-    """Raise 400 if the project is not a sound_monitoring project."""
+    """Raise 400 if the project does not have the given module enabled."""
-    if not project or project.project_type_id != "sound_monitoring":
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found.")
+    exists = db.query(ProjectModule).filter_by(
+        project_id=project.id, module_type=module_type, enabled=True
+    ).first()
+    if not exists:
         raise HTTPException(
             status_code=400,
-            detail="This feature is only available for Sound Monitoring projects.",
+            detail=f"This project does not have the {module_type.replace('_', ' ').title()} module enabled.",
         )
 
 
@@ -762,7 +768,7 @@ async def upload_nrl_data(
 
     # Verify project and location exist
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     location = db.query(MonitoringLocation).filter_by(
         id=location_id, project_id=project_id
@@ -955,7 +961,7 @@ async def get_nrl_live_status(
     import os
     import httpx
 
-    _require_sound_project(db.query(Project).filter_by(id=project_id).first())
+    _require_module(db.query(Project).filter_by(id=project_id).first(), "sound_monitoring", db)
 
     # Find the assigned unit (active = assigned_until IS NULL)
     assignment = db.query(UnitAssignment).filter(

backend/routers/projects.py

@@ -31,6 +31,7 @@ import pathlib as _pathlib
 from backend.models import (
     Project,
     ProjectType,
+    ProjectModule,
     MonitoringLocation,
     UnitAssignment,
     MonitoringSession,
@@ -49,11 +50,40 @@ logger = logging.getLogger(__name__)
 # Shared helpers
 # ============================================================================
 
-def _require_sound_project(project: Project) -> None:
+# Registry of known module types. Add new entries here to make them available
-    """Raise 400 if the project is not a sound_monitoring project.
+# in the UI for any project.
-    Call this at the top of any endpoint that only makes sense for sound projects
+MODULES = {
-    (report generation, FTP browser, RND file viewer, etc.)."""
+    "sound_monitoring":     {"name": "Sound Monitoring",     "icon": "speaker",   "color": "orange"},
-    if not project or project.project_type_id != "sound_monitoring":
+    "vibration_monitoring": {"name": "Vibration Monitoring", "icon": "activity",  "color": "blue"},
+}
+
+
+def _get_project_modules(project_id: str, db: Session) -> list[str]:
+    """Return list of enabled module_type strings for a project."""
+    rows = db.query(ProjectModule).filter_by(project_id=project_id, enabled=True).all()
+    return [r.module_type for r in rows]
+
+
+def _require_module(project: Project, module_type: str, db: Session) -> None:
+    """Raise 400 if the project does not have the given module enabled."""
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found.")
+    exists = db.query(ProjectModule).filter_by(
+        project_id=project.id, module_type=module_type, enabled=True
+    ).first()
+    if not exists:
+        module_name = MODULES.get(module_type, {}).get("name", module_type)
+        raise HTTPException(
+            status_code=400,
+            detail=f"This project does not have the {module_name} module enabled.",
+        )
+
+
+# Keep legacy alias so any call sites not yet migrated still work
+def _require_sound_project(project: Project, db: Session = None) -> None:
+    if db is not None:
+        _require_module(project, "sound_monitoring", db)
+    elif not project or project.project_type_id != "sound_monitoring":
         raise HTTPException(
             status_code=400,
             detail="This feature is only available for Sound Monitoring projects.",
@@ -604,7 +634,7 @@ async def create_project(request: Request, db: Session = Depends(get_db)):
         project_number=form_data.get("project_number"),  # TMI ID: xxxx-YY format
         name=form_data.get("name"),
         description=form_data.get("description"),
-        project_type_id=form_data.get("project_type_id"),
+        project_type_id=form_data.get("project_type_id") or "",
         status="active",
         client_name=form_data.get("client_name"),
         site_address=form_data.get("site_address"),
@@ -635,6 +665,7 @@ async def get_project(project_id: str, db: Session = Depends(get_db)):
         raise HTTPException(status_code=404, detail="Project not found")
 
     project_type = db.query(ProjectType).filter_by(id=project.project_type_id).first()
+    modules = _get_project_modules(project.id, db)
 
     return {
         "id": project.id,
@@ -643,6 +674,7 @@ async def get_project(project_id: str, db: Session = Depends(get_db)):
         "description": project.description,
         "project_type_id": project.project_type_id,
         "project_type_name": project_type.name if project_type else None,
+        "modules": modules,
         "status": project.status,
         "client_name": project.client_name,
         "site_address": project.site_address,
@@ -655,6 +687,58 @@ async def get_project(project_id: str, db: Session = Depends(get_db)):
     }
 
 
+@router.get("/{project_id}/modules")
+async def list_project_modules(project_id: str, db: Session = Depends(get_db)):
+    """Return enabled modules for a project, including metadata from MODULES registry."""
+    project = db.query(Project).filter_by(id=project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+    rows = db.query(ProjectModule).filter_by(project_id=project_id, enabled=True).all()
+    active = {r.module_type for r in rows}
+    return {
+        "active": list(active),
+        "available": [
+            {"module_type": k, **v}
+            for k, v in MODULES.items()
+            if k not in active
+        ],
+    }
+
+
+@router.post("/{project_id}/modules")
+async def add_project_module(project_id: str, request: Request, db: Session = Depends(get_db)):
+    """Add a module to a project. Body: {module_type: str}"""
+    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()
+    module_type = data.get("module_type")
+    if not module_type or module_type not in MODULES:
+        raise HTTPException(status_code=400, detail=f"Unknown module type: {module_type}")
+    existing = db.query(ProjectModule).filter_by(project_id=project_id, module_type=module_type).first()
+    if existing:
+        existing.enabled = True
+    else:
+        db.add(ProjectModule(
+            id=str(uuid.uuid4()),
+            project_id=project_id,
+            module_type=module_type,
+            enabled=True,
+        ))
+    db.commit()
+    return {"ok": True, "modules": _get_project_modules(project_id, db)}
+
+
+@router.delete("/{project_id}/modules/{module_type}")
+async def remove_project_module(project_id: str, module_type: str, db: Session = Depends(get_db)):
+    """Disable a module on a project. Data is not deleted."""
+    row = db.query(ProjectModule).filter_by(project_id=project_id, module_type=module_type).first()
+    if row:
+        row.enabled = False
+        db.commit()
+    return {"ok": True, "modules": _get_project_modules(project_id, db)}
+
+
 @router.put("/{project_id}")
 async def update_project(
     project_id: str,
@@ -867,6 +951,7 @@ async def get_project_dashboard(
         "request": request,
         "project": project,
         "project_type": project_type,
+        "modules": _get_project_modules(project_id, db),
         "locations": locations,
         "assigned_units": assigned_units,
         "active_sessions": active_sessions,
@@ -899,6 +984,7 @@ async def get_project_header(
         "request": request,
         "project": project,
         "project_type": project_type,
+        "modules": _get_project_modules(project_id, db),
     })
 
 
@@ -1235,18 +1321,65 @@ async def get_sessions_calendar(
         if loc:
             loc_names[lid] = loc.name
 
-    # Build day -> list of session dots
+    # Build calendar grid bounds first (needed for session spanning logic)
-    # day key: date object
+    first_day = _date(year, month, 1)
+    last_day = _date(year, month, monthrange(year, month)[1])
+    days_before = (first_day.isoweekday() % 7)
+    grid_start = first_day - _td(days=days_before)
+    days_after = 6 - (last_day.isoweekday() % 7)
+    grid_end = last_day + _td(days=days_after)
+
+    def _period_hours(s):
+        """Return (start_hour, end_hour) for a session, falling back to period_type defaults."""
+        psh, peh = s.period_start_hour, s.period_end_hour
+        if psh is None or peh is None:
+            if s.period_type and "night" in s.period_type:
+                return 19, 7
+            if s.period_type and "day" in s.period_type:
+                return 7, 19
+        return psh, peh
+
+    # Build day -> list of gantt segments
     day_sessions: dict = {}
     for s in sessions:
         if not s.started_at:
             continue
         local_start = utc_to_local(s.started_at)
-        d = local_start.date()
+        local_end = utc_to_local(s.stopped_at) if s.stopped_at else now_local
-        if d.year == year and d.month == month:
+        span_start = local_start.date()
-            if d not in day_sessions:
+        span_end = local_end.date()
-                day_sessions[d] = []
+        psh, peh = _period_hours(s)
-            day_sessions[d].append({
+
+        cur_d = span_start
+        while cur_d <= span_end:
+            if grid_start <= cur_d <= grid_end:
+                # Device bar bounds (hours 0–24 within this day)
+                dev_sh = (local_start.hour + local_start.minute / 60.0) if cur_d == span_start else 0.0
+                dev_eh = (local_end.hour + local_end.minute / 60.0) if cur_d == span_end else 24.0
+
+                # Effective window within this day
+                eff_sh = eff_eh = None
+                if psh is not None and peh is not None:
+                    if psh < peh:
+                        # Day window e.g. 7→19
+                        eff_sh, eff_eh = float(psh), float(peh)
+                    else:
+                        # Night window crossing midnight e.g. 19→7
+                        if cur_d == span_start:
+                            eff_sh, eff_eh = float(psh), 24.0
+                        else:
+                            eff_sh, eff_eh = 0.0, float(peh)
+
+                # Format tooltip labels
+                def _fmt_h(h):
+                    hh = int(h) % 24
+                    mm = int((h % 1) * 60)
+                    suffix = "AM" if hh < 12 else "PM"
+                    return f"{hh % 12 or 12}:{mm:02d} {suffix}"
+
+                if cur_d not in day_sessions:
+                    day_sessions[cur_d] = []
+                day_sessions[cur_d].append({
                     "session_id": s.id,
                     "label": s.session_label or f"Session {s.id[:8]}",
                     "location_id": s.location_id,
@@ -1254,17 +1387,17 @@ async def get_sessions_calendar(
                     "color": loc_color.get(s.location_id, "#9ca3af"),
                     "status": s.status,
                     "period_type": s.period_type,
+                    # Gantt bar percentages (0–100 scale across 24 hours)
+                    "dev_start_pct": round(dev_sh / 24 * 100, 1),
+                    "dev_width_pct": max(1.5, round((dev_eh - dev_sh) / 24 * 100, 1)),
+                    "eff_start_pct": round(eff_sh / 24 * 100, 1) if eff_sh is not None else None,
+                    "eff_width_pct": max(1.0, round((eff_eh - eff_sh) / 24 * 100, 1)) if eff_sh is not None else None,
+                    "dev_start_label": _fmt_h(dev_sh),
+                    "dev_end_label": _fmt_h(dev_eh),
+                    "eff_start_label": f"{int(psh):02d}:00" if eff_sh is not None else None,
+                    "eff_end_label": f"{int(peh):02d}:00" if eff_sh is not None else None,
                 })
-
+            cur_d += _td(days=1)
-    # Build calendar grid (Mon–Sun weeks)
-    first_day = _date(year, month, 1)
-    last_day = _date(year, month, monthrange(year, month)[1])
-    # Start on Sunday before first_day (isoweekday: Mon=1 … Sun=7; weekday: Mon=0 … Sun=6)
-    days_before = (first_day.isoweekday() % 7)  # Sun=0, Mon=1, …, Sat=6
-    grid_start = first_day - _td(days=days_before)
-    # End on Saturday after last_day
-    days_after = 6 - (last_day.isoweekday() % 7)
-    grid_end = last_day + _td(days=days_after)
 
     weeks = []
     cur = grid_start
@@ -1324,7 +1457,7 @@ async def get_ftp_browser(
     from backend.models import DataFile
 
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     # Get all assignments for this project (active = assigned_until IS NULL)
     assignments = db.query(UnitAssignment).filter(
@@ -1372,7 +1505,7 @@ async def ftp_download_to_server(
     from pathlib import Path
     from backend.models import DataFile
 
-    _require_sound_project(db.query(Project).filter_by(id=project_id).first())
+    _require_module(db.query(Project).filter_by(id=project_id).first(), "sound_monitoring", db)
 
     data = await request.json()
     unit_id = data.get("unit_id")
@@ -1540,7 +1673,7 @@ async def ftp_download_folder_to_server(
     import zipfile
     import io
 
-    _require_sound_project(db.query(Project).filter_by(id=project_id).first())
+    _require_module(db.query(Project).filter_by(id=project_id).first(), "sound_monitoring", db)
     from pathlib import Path
     from backend.models import DataFile
 
@@ -2100,7 +2233,7 @@ async def view_session_detail(
     project = db.query(Project).filter_by(id=project_id).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     session = db.query(MonitoringSession).filter_by(id=session_id, project_id=project_id).first()
     if not session:
@@ -2186,7 +2319,7 @@ async def view_rnd_file(
 
     # Get project info
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     # Get location info if available
     location = None
@@ -2239,7 +2372,7 @@ async def get_rnd_data(
     import csv
     import io
 
-    _require_sound_project(db.query(Project).filter_by(id=project_id).first())
+    _require_module(db.query(Project).filter_by(id=project_id).first(), "sound_monitoring", db)
 
     # Get the file record
     file_record = db.query(DataFile).filter_by(id=file_id).first()
@@ -2399,7 +2532,7 @@ async def generate_excel_report(
 
     # Get related data for report context
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
     location = db.query(MonitoringLocation).filter_by(id=session.location_id).first() if session.location_id else None
 
     # Build full file path
@@ -2830,7 +2963,7 @@ async def preview_report_data(
 
     # Get related data for report context
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
     location = db.query(MonitoringLocation).filter_by(id=session.location_id).first() if session.location_id else None
 
     # Build full file path
@@ -3042,7 +3175,7 @@ async def generate_report_from_preview(
         raise HTTPException(status_code=403, detail="File does not belong to this project")
 
     project = db.query(Project).filter_by(id=project_id).first()
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
     location = db.query(MonitoringLocation).filter_by(id=session.location_id).first() if session.location_id else None
 
     # Extract data from request
@@ -3323,7 +3456,7 @@ async def generate_combined_excel_report(
     project = db.query(Project).filter_by(id=project_id).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     # Get all sessions with measurement files
     sessions = db.query(MonitoringSession).filter_by(project_id=project_id).all()
@@ -3669,7 +3802,7 @@ async def combined_report_wizard(
     project = db.query(Project).filter_by(id=project_id).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     sessions = db.query(MonitoringSession).filter_by(project_id=project_id).order_by(MonitoringSession.started_at).all()
 
@@ -3956,7 +4089,7 @@ async def generate_combined_from_preview(
     project = db.query(Project).filter_by(id=project_id).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     report_title = data.get("report_title", "Background Noise Study")
     project_name = data.get("project_name", project.name)
@@ -4432,7 +4565,7 @@ async def upload_all_project_data(
     project = db.query(Project).filter_by(id=project_id).first()
     if not project:
         raise HTTPException(status_code=404, detail="Project not found")
-    _require_sound_project(project)
+    _require_module(project, "sound_monitoring", db)
 
     # Load all sound monitoring locations for this project
     locations = db.query(MonitoringLocation).filter_by(

templates/partials/project_create_modal.html

@@ -63,16 +63,25 @@ Include this modal in pages that use the project picker.
 
             <div>
                 <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
-                    Project Type <span class="text-red-500">*</span>
+                    Modules
+                    <span class="text-gray-400 font-normal">(optional)</span>
                 </label>
-                <select name="project_type_id"
+                <div class="grid grid-cols-2 gap-2">
-                        id="qcp-project-type"
+                    <label class="flex items-center gap-2 p-2.5 border border-gray-200 dark:border-gray-700 rounded-lg cursor-pointer hover:border-orange-400 has-[:checked]:border-orange-400 has-[:checked]:bg-orange-50 dark:has-[:checked]:bg-orange-900/20 transition-colors">
-                        required
+                        <input type="checkbox" name="module_sound" value="1" class="accent-seismo-orange">
-                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
+                        <div>
-                    <option value="vibration_monitoring">Vibration Monitoring</option>
+                            <p class="text-sm font-medium text-gray-900 dark:text-white leading-tight">Sound</p>
-                    <option value="sound_monitoring">Sound Monitoring</option>
+                            <p class="text-xs text-gray-500 dark:text-gray-400">SLMs, sessions, reports</p>
-                    <option value="combined">Combined (Vibration + Sound)</option>
+                        </div>
-                </select>
+                    </label>
+                    <label class="flex items-center gap-2 p-2.5 border border-gray-200 dark:border-gray-700 rounded-lg cursor-pointer hover:border-blue-400 has-[:checked]:border-blue-400 has-[:checked]:bg-blue-50 dark:has-[:checked]:bg-blue-900/20 transition-colors">
+                        <input type="checkbox" name="module_vibration" value="1" class="accent-blue-500">
+                        <div>
+                            <p class="text-sm font-medium text-gray-900 dark:text-white leading-tight">Vibration</p>
+                            <p class="text-xs text-gray-500 dark:text-gray-400">Seismographs, modems</p>
+                        </div>
+                    </label>
+                </div>
             </div>
 
             <div>
@@ -222,6 +231,20 @@ if (typeof openCreateProjectModal === 'undefined') {
             const result = await response.json();
 
             if (response.ok && result.success) {
+                const projectId = result.project_id;
+
+                // Add selected modules
+                const moduleMap = { module_sound: 'sound_monitoring', module_vibration: 'vibration_monitoring' };
+                for (const [field, moduleType] of Object.entries(moduleMap)) {
+                    if (formData.get(field)) {
+                        await fetch(`/api/projects/${projectId}/modules`, {
+                            method: 'POST',
+                            headers: {'Content-Type': 'application/json'},
+                            body: JSON.stringify({ module_type: moduleType }),
+                        });
+                    }
+                }
+
                 // Build display text from form values
                 const parts = [];
                 const projectNumber = formData.get('project_number');
@@ -235,7 +258,7 @@ if (typeof openCreateProjectModal === 'undefined') {
                 const displayText = parts.join(' - ');
 
                 // Select the newly created project in the picker
-                selectProject(result.project_id, displayText, pickerId);
+                selectProject(projectId, displayText, pickerId);
 
                 // Close modal
                 closeCreateProjectModal();

templates/partials/projects/project_dashboard.html

@@ -52,14 +52,14 @@
     <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
         <div class="flex items-center justify-between mb-4">
             <h3 class="text-lg font-semibold text-gray-900 dark:text-white">
-                {% if project_type and project_type.id == 'sound_monitoring' %}
+                {% if 'sound_monitoring' in modules and 'vibration_monitoring' not in modules %}
                     NRLs
                 {% else %}
                     Locations
                 {% endif %}
             </h3>
-            <button onclick="openLocationModal('{% if project_type and project_type.id == 'sound_monitoring' %}sound{% elif project_type and project_type.id == 'vibration_monitoring' %}vibration{% else %}{% endif %}')" class="text-sm text-seismo-orange hover:text-seismo-navy">
+            <button onclick="openLocationModal('{% if 'sound_monitoring' in modules and 'vibration_monitoring' not in modules %}sound{% elif 'vibration_monitoring' in modules and 'sound_monitoring' not in modules %}vibration{% endif %}')" class="text-sm text-seismo-orange hover:text-seismo-navy">
-                {% if project_type and project_type.id == 'sound_monitoring' %}
+                {% if 'sound_monitoring' in modules and 'vibration_monitoring' not in modules %}
                     Add NRL
                 {% else %}
                     Add Location
@@ -67,7 +67,7 @@
             </button>
         </div>
         <div id="project-locations"
-             hx-get="/api/projects/{{ project.id }}/locations{% if project_type and project_type.id == 'sound_monitoring' %}?location_type=sound{% endif %}"
+             hx-get="/api/projects/{{ project.id }}/locations{% if 'sound_monitoring' in modules and 'vibration_monitoring' not in modules %}?location_type=sound{% endif %}"
              hx-trigger="load"
              hx-swap="innerHTML">
             <div class="animate-pulse space-y-3">

templates/partials/projects/project_header.html

@@ -23,9 +23,30 @@
                         </svg>
                     </span>
                 </div>
-                {% if project_type %}
+                <!-- Module badges -->
-                <span class="text-gray-500 dark:text-gray-400">{{ project_type.name }}</span>
+                <div id="module-badges" class="flex items-center gap-1.5 flex-wrap">
-                {% endif %}
+                    {% for m in modules %}
+                    <span class="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium
+                        {% if m == 'sound_monitoring' %}bg-orange-100 text-orange-800 dark:bg-orange-900/40 dark:text-orange-300
+                        {% elif m == 'vibration_monitoring' %}bg-blue-100 text-blue-800 dark:bg-blue-900/40 dark:text-blue-300
+                        {% else %}bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300{% endif %}">
+                        {% if m == 'sound_monitoring' %}
+                        <svg class="w-3 h-3" 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 7.072M12 6v12M9 8.464a5 5 0 000 7.072"/></svg>
+                        Sound Monitoring
+                        {% elif m == 'vibration_monitoring' %}
+                        <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M22 12h-4l-3 9L9 3l-3 9H2"/></svg>
+                        Vibration Monitoring
+                        {% else %}{{ m }}{% endif %}
+                        <button onclick="removeModule('{{ m }}')" class="ml-0.5 hover:text-red-500 transition-colors" title="Remove module">
+                            <svg class="w-2.5 h-2.5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2.5" d="M6 18L18 6M6 6l12 12"/></svg>
+                        </button>
+                    </span>
+                    {% endfor %}
+                    <button onclick="openAddModuleModal()" class="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium border border-dashed border-gray-400 dark:border-gray-600 text-gray-500 dark:text-gray-400 hover:border-orange-400 hover:text-orange-500 transition-colors">
+                        <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"/></svg>
+                        Add Module
+                    </button>
+                </div>
                 {% if project.data_collection_mode == 'remote' %}
                 <span class="inline-flex items-center gap-1 px-2.5 py-0.5 rounded-full text-xs font-medium bg-blue-100 text-blue-800 dark:bg-blue-900/40 dark:text-blue-300">
                     <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -45,7 +66,7 @@
         </div>
         <!-- Project Actions -->
         <div class="flex items-center gap-3">
-            {% if project_type and project_type.id == 'sound_monitoring' %}
+            {% if 'sound_monitoring' in modules %}
             <a href="/api/projects/{{ project.id }}/combined-report-wizard"
                class="px-4 py-2 bg-emerald-600 text-white rounded-lg hover:bg-emerald-700 transition-colors flex items-center gap-2 text-sm">
                 <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -57,3 +78,69 @@
         </div>
     </div>
 </div>
+
+<!-- Add Module Modal -->
+<div id="add-module-modal" class="hidden fixed inset-0 z-50 flex items-center justify-center bg-black/60 backdrop-blur-sm">
+    <div class="bg-white dark:bg-slate-800 rounded-xl shadow-2xl w-full max-w-sm mx-4 p-6">
+        <div class="flex items-center justify-between mb-4">
+            <h3 class="text-lg font-semibold text-gray-900 dark:text-white">Add Module</h3>
+            <button onclick="closeAddModuleModal()" class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-200">
+                <svg class="w-5 h-5" 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"/></svg>
+            </button>
+        </div>
+        <div id="add-module-options" class="space-y-2">
+            <!-- Populated by JS -->
+        </div>
+        <p id="add-module-none" class="hidden text-sm text-gray-500 dark:text-gray-400 text-center py-4">All available modules are already enabled.</p>
+    </div>
+</div>
+
+<script>
+const _MODULE_META = {
+    sound_monitoring:     { name: "Sound Monitoring",     color: "orange", icon: "M15.536 8.464a5 5 0 010 7.072M12 6v12M9 8.464a5 5 0 000 7.072" },
+    vibration_monitoring: { name: "Vibration Monitoring", color: "blue",   icon: "M22 12h-4l-3 9L9 3l-3 9H2" },
+};
+
+async function openAddModuleModal() {
+    const resp = await fetch(`/api/projects/${projectId}/modules`);
+    const data = await resp.json();
+    const container = document.getElementById('add-module-options');
+    const none = document.getElementById('add-module-none');
+    container.innerHTML = '';
+    if (!data.available || data.available.length === 0) {
+        none.classList.remove('hidden');
+    } else {
+        none.classList.add('hidden');
+        data.available.forEach(m => {
+            const meta = _MODULE_META[m.module_type] || { name: m.module_type, color: 'gray' };
+            const btn = document.createElement('button');
+            btn.className = `w-full text-left px-4 py-3 rounded-lg border border-gray-200 dark:border-gray-700 hover:border-${meta.color}-400 hover:bg-${meta.color}-50 dark:hover:bg-${meta.color}-900/20 transition-colors flex items-center gap-3`;
+            btn.innerHTML = `<span class="flex-1 font-medium text-gray-900 dark:text-white">${meta.name}</span>`;
+            btn.onclick = () => addModule(m.module_type);
+            container.appendChild(btn);
+        });
+    }
+    document.getElementById('add-module-modal').classList.remove('hidden');
+}
+
+function closeAddModuleModal() {
+    document.getElementById('add-module-modal').classList.add('hidden');
+}
+
+async function addModule(moduleType) {
+    await fetch(`/api/projects/${projectId}/modules`, {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({ module_type: moduleType }),
+    });
+    closeAddModuleModal();
+    window.location.reload();
+}
+
+async function removeModule(moduleType) {
+    const meta = _MODULE_META[moduleType] || { name: moduleType };
+    if (!confirm(`Remove the ${meta.name} module? The data will not be deleted, but the related tabs will be hidden.`)) return;
+    await fetch(`/api/projects/${projectId}/modules/${moduleType}`, { method: 'DELETE' });
+    window.location.reload();
+}
+</script>

templates/partials/projects/sessions_calendar.html

@@ -1,7 +1,7 @@
-<!-- Monthly Sessions Calendar -->
+<!-- Monthly Sessions Calendar — Gantt Style -->
-<div class="bg-white dark:bg-slate-800 rounded-xl border border-gray-200 dark:border-gray-700 overflow-hidden">
+<div class="sessions-cal-wrap bg-white dark:bg-slate-800 rounded-xl border border-gray-200 dark:border-gray-700 overflow-hidden">
 
-    <!-- Calendar header: month navigation -->
+    <!-- Month navigation -->
     <div class="px-5 py-3 border-b border-gray-200 dark:border-gray-700 flex items-center justify-between">
         <button hx-get="/api/projects/{{ project_id }}/sessions-calendar?month={{ prev_month }}&year={{ prev_year }}"
                 hx-target="#sessions-calendar"
@@ -12,9 +12,7 @@
                 <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
             </svg>
         </button>
-
         <h3 class="text-sm font-semibold text-gray-800 dark:text-gray-200">{{ month_name }} {{ year }}</h3>
-
         <button hx-get="/api/projects/{{ project_id }}/sessions-calendar?month={{ next_month }}&year={{ next_year }}"
                 hx-target="#sessions-calendar"
                 hx-swap="innerHTML"
@@ -26,9 +24,10 @@
         </button>
     </div>
 
-    <!-- Legend -->
+    <!-- Legend + key -->
+    <div class="px-5 py-2 border-b border-gray-100 dark:border-gray-700 flex flex-wrap items-center gap-x-5 gap-y-1.5">
         {% if legend %}
-    <div class="px-5 py-2 border-b border-gray-100 dark:border-gray-700 flex flex-wrap gap-3">
+        <div class="flex flex-wrap gap-x-4 gap-y-1">
             {% for loc in legend %}
             <div class="flex items-center gap-1.5 text-xs text-gray-600 dark:text-gray-400">
                 <span class="w-2.5 h-2.5 rounded-full shrink-0" style="background-color: {{ loc.color }}"></span>
@@ -37,12 +36,24 @@
             {% endfor %}
         </div>
         {% endif %}
+        <!-- Bar key -->
+        <div class="flex items-center gap-3 text-xs text-gray-400 dark:text-gray-500 ml-auto shrink-0">
+            <div class="flex items-center gap-1.5">
+                <div class="w-8 h-2 rounded-sm" style="background:rgba(100,100,100,0.25)"></div>
+                <span>Device on</span>
+            </div>
+            <div class="flex items-center gap-1.5">
+                <div class="w-8 h-2 rounded-sm bg-blue-500"></div>
+                <span>Effective window</span>
+            </div>
+        </div>
+    </div>
 
     <!-- Day-of-week headers -->
     <div class="grid grid-cols-7 border-b border-gray-100 dark:border-gray-700">
         {% for day_name in ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'] %}
-        <div class="py-2 text-center text-xs font-medium text-gray-400 dark:text-gray-500 uppercase tracking-wide
+        <div class="py-2 text-center text-xs font-medium uppercase tracking-wide
-                    {% if loop.index == 1 or loop.index == 7 %}text-amber-500 dark:text-amber-400{% endif %}">
+                    {% if loop.index == 1 or loop.index == 7 %}text-amber-500 dark:text-amber-400{% else %}text-gray-400 dark:text-gray-500{% endif %}">
             {{ day_name }}
         </div>
         {% endfor %}
@@ -52,40 +63,62 @@
     {% for week in weeks %}
     <div class="grid grid-cols-7 {% if not loop.last %}border-b border-gray-100 dark:border-gray-700{% endif %}">
         {% for day in week %}
-        <div class="min-h-[72px] p-1.5 {% if not loop.last %}border-r border-gray-100 dark:border-gray-700{% endif %}
+        <div class="min-h-[80px] p-1.5
+                    {% if not loop.last %}border-r border-gray-100 dark:border-gray-700{% endif %}
                     {% if not day.in_month %}bg-gray-50 dark:bg-slate-800/50{% else %}bg-white dark:bg-slate-800{% endif %}
                     {% if day.is_today %}ring-1 ring-inset ring-seismo-orange{% endif %}">
 
             <!-- Date number -->
-            <div class="text-right mb-1">
+            <div class="text-right mb-1.5">
                 <span class="text-xs {% if day.is_today %}font-bold text-seismo-orange{% elif day.in_month %}text-gray-700 dark:text-gray-300{% else %}text-gray-300 dark:text-gray-600{% endif %}">
                     {{ day.date.day }}
                 </span>
             </div>
 
-            <!-- Session dots/chips -->
+            <!-- Gantt bars -->
             {% if day.sessions %}
-            <div class="space-y-0.5">
+            <div class="space-y-2">
-                {% for s in day.sessions[:4] %}
+                {% for s in day.sessions %}
-                <a href="/api/projects/{{ project_id }}/sessions/{{ s.session_id }}/detail"
+
-                   class="flex items-center gap-1 px-1 py-0.5 rounded text-xs truncate hover:opacity-80 transition-opacity"
+                <a href="/api/projects/{{ project_id }}/sessions/{{ s.session_id }}/detail" class="block">
-                   style="background-color: {{ s.color }}22; border-left: 2px solid {{ s.color }};"
+
-                   title="{{ s.label }}">
+                    <!-- 24-hour timeline bar -->
-                    <span class="truncate text-gray-700 dark:text-gray-300" style="color: {{ s.color }}; font-size: 0.65rem; line-height: 1.2;">
+                    <div class="relative overflow-hidden -mx-1.5" style="height:11px; background:rgba(128,128,128,0.08);">
-                        {{ s.location_name }}
+                        <div class="absolute top-0 bottom-0 w-px" style="left:25%; background:rgba(128,128,128,0.18)"></div>
-                        {% if s.period_type %}
+                        <div class="absolute top-0 bottom-0 w-px" style="left:50%; background:rgba(128,128,128,0.28)"></div>
-                        <span class="opacity-60">{{ '☀' if 'day' in s.period_type else '☾' }}</span>
+                        <div class="absolute top-0 bottom-0 w-px" style="left:75%; background:rgba(128,128,128,0.18)"></div>
+                        <div class="absolute top-0 bottom-0"
+                             style="left:{{ s.dev_start_pct }}%; width:{{ s.dev_width_pct }}%; background-color:{{ s.color }}; opacity:0.28;"></div>
+                        {% if s.eff_start_pct is not none %}
+                        <div class="absolute"
+                             style="left:{{ s.eff_start_pct }}%; width:{{ s.eff_width_pct }}%; top:1.5px; bottom:1.5px; background-color:{{ s.color }};"></div>
                         {% endif %}
-                    </span>
+                    </div>
+
+                    <!-- Label -->
+                    <div class="truncate mt-0.5" style="color:{{ s.color }}; font-size:0.58rem; line-height:1.3;">
+                        {{ s.location_name }} · {{ day.date.strftime('%-m/%-d') }} · {% if s.period_type %}{{ 'Night' if 'night' in s.period_type else 'Day' }}{% else %}—{% endif %}
+                    </div>
+
                 </a>
+
                 {% endfor %}
-                {% if day.sessions|length > 4 %}
-                <div class="text-center text-xs text-gray-400 dark:text-gray-500">+{{ day.sessions|length - 4 }} more</div>
-                {% endif %}
             </div>
             {% endif %}
+
         </div>
         {% endfor %}
     </div>
     {% endfor %}
+
+    <!-- Time scale footer hint -->
+    <div class="px-4 py-1.5 border-t border-gray-100 dark:border-gray-700 flex justify-between text-gray-300 dark:text-gray-600" style="font-size:0.6rem;">
+        <span>12 AM</span>
+        <span>6 AM</span>
+        <span>12 PM</span>
+        <span>6 PM</span>
+        <span>12 AM</span>
+    </div>
+
 </div>
+

templates/projects/detail.html

@@ -770,7 +770,7 @@
 <script>
 const projectId = "{{ project_id }}";
 let editingLocationId = null;
-let projectTypeId = null;
+let projectModules = [];  // list of enabled module_type strings, e.g. ['sound_monitoring']
 
 async function quickUpdateStatus(newStatus) {
     try {
@@ -828,7 +828,7 @@ async function loadProjectDetails() {
             throw new Error('Failed to load project details');
         }
         const data = await response.json();
-        projectTypeId = data.project_type_id || null;
+        projectModules = data.modules || [];
 
         // Update breadcrumb
         document.getElementById('project-name-breadcrumb').textContent = data.name || 'Project';
@@ -849,10 +849,10 @@ async function loadProjectDetails() {
         if (modeRadio) modeRadio.checked = true;
         settingsUpdateModeStyles();
 
-        // Update tab labels and visibility based on project type
+        // Update tab labels and visibility based on active modules
-        const isSoundProject = projectTypeId === 'sound_monitoring';
+        const hasSoundModule = projectModules.includes('sound_monitoring');
-        const isVibrationProject = projectTypeId === 'vibration_monitoring';
+        const hasVibrationModule = projectModules.includes('vibration_monitoring');
-        if (isSoundProject) {
+        if (hasSoundModule && !hasVibrationModule) {
             document.getElementById('locations-tab-label').textContent = 'NRLs';
             document.getElementById('locations-header').textContent = 'Noise Recording Locations';
             document.getElementById('add-location-label').textContent = 'Add NRL';
@@ -860,11 +860,11 @@ async function loadProjectDetails() {
         // Monitoring Sessions and Data Files tabs are sound-only
         // Data Files also hides the FTP browser section for manual projects
         const isRemote = mode === 'remote';
-        document.getElementById('sessions-tab-btn').classList.toggle('hidden', !isSoundProject);
+        document.getElementById('sessions-tab-btn').classList.toggle('hidden', !hasSoundModule);
-        document.getElementById('data-tab-btn').classList.toggle('hidden', !isSoundProject);
+        document.getElementById('data-tab-btn').classList.toggle('hidden', !hasSoundModule);
-        // Schedules and Assigned Units: hidden for vibration; for sound, only show if remote
+        // Schedules and Assigned Units: hidden when no sound module; for sound, only show if remote
-        document.getElementById('schedules-tab-btn')?.classList.toggle('hidden', isVibrationProject || (isSoundProject && !isRemote));
+        document.getElementById('schedules-tab-btn')?.classList.toggle('hidden', !hasSoundModule || !isRemote);
-        document.getElementById('units-tab-btn')?.classList.toggle('hidden', isVibrationProject || (isSoundProject && !isRemote));
+        document.getElementById('units-tab-btn')?.classList.toggle('hidden', !hasSoundModule || !isRemote);
         // FTP browser within Data Files tab
         document.getElementById('ftp-browser')?.classList.toggle('hidden', !isRemote);
 
@@ -996,11 +996,13 @@ function openLocationModal(defaultType) {
     if (connectedRadio) { connectedRadio.checked = true; updateModeLabels(); }
     const locationTypeSelect = document.getElementById('location-type');
     const locationTypeWrapper = locationTypeSelect.closest('div');
-    if (projectTypeId === 'sound_monitoring') {
+    const hasSoundMod = projectModules.includes('sound_monitoring');
+    const hasVibMod = projectModules.includes('vibration_monitoring');
+    if (hasSoundMod && !hasVibMod) {
         locationTypeSelect.value = 'sound';
         locationTypeSelect.disabled = true;
         if (locationTypeWrapper) locationTypeWrapper.classList.add('hidden');
-    } else if (projectTypeId === 'vibration_monitoring') {
+    } else if (hasVibMod && !hasSoundMod) {
         locationTypeSelect.value = 'vibration';
         locationTypeSelect.disabled = true;
         if (locationTypeWrapper) locationTypeWrapper.classList.add('hidden');
@@ -1030,11 +1032,13 @@ function openEditLocationModal(button) {
     if (modeRadio) { modeRadio.checked = true; updateModeLabels(); }
     const locationTypeSelect = document.getElementById('location-type');
     const locationTypeWrapper = locationTypeSelect.closest('div');
-    if (projectTypeId === 'sound_monitoring') {
+    const hasSoundModE = projectModules.includes('sound_monitoring');
+    const hasVibModE = projectModules.includes('vibration_monitoring');
+    if (hasSoundModE && !hasVibModE) {
         locationTypeSelect.value = 'sound';
         locationTypeSelect.disabled = true;
         if (locationTypeWrapper) locationTypeWrapper.classList.add('hidden');
-    } else if (projectTypeId === 'vibration_monitoring') {
+    } else if (hasVibModE && !hasSoundModE) {
         locationTypeSelect.value = 'vibration';
         locationTypeSelect.disabled = true;
         if (locationTypeWrapper) locationTypeWrapper.classList.add('hidden');
@@ -1060,9 +1064,9 @@ document.getElementById('location-form').addEventListener('submit', async functi
     const address = document.getElementById('location-address').value.trim();
     const coordinates = document.getElementById('location-coordinates').value.trim();
     let locationType = document.getElementById('location-type').value;
-    if (projectTypeId === 'sound_monitoring') {
+    if (projectModules.includes('sound_monitoring') && !projectModules.includes('vibration_monitoring')) {
         locationType = 'sound';
-    } else if (projectTypeId === 'vibration_monitoring') {
+    } else if (projectModules.includes('vibration_monitoring') && !projectModules.includes('sound_monitoring')) {
         locationType = 'vibration';
     }
 
@@ -1842,5 +1846,6 @@ document.addEventListener('DOMContentLoaded', function() {
         switchTab(hash);
     }
 });
+
 </script>
 {% endblock %}

templates/projects/overview.html

@@ -96,48 +96,38 @@
         </div>
 
         <div class="p-6" id="createProjectContent">
-            <!-- Step 1: Project Type Selection (initially shown) -->
+            <form id="createProjectFormElement">
-            <div id="projectTypeSelection">
-                <h3 class="text-lg font-semibold text-gray-900 dark:text-white mb-4">Choose Project Type</h3>
-                <div class="grid grid-cols-1 md:grid-cols-3 gap-4"
-                     hx-get="/api/projects/types/list"
-                     hx-trigger="load"
-                     hx-target="this"
-                     hx-swap="innerHTML">
-                    <!-- Project type cards will be loaded here -->
-                    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-48 rounded-lg"></div>
-                    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-48 rounded-lg"></div>
-                    <div class="animate-pulse bg-gray-200 dark:bg-gray-700 h-48 rounded-lg"></div>
-                </div>
-                <div class="mt-6 flex justify-end">
-                    <button type="button" onclick="hideCreateProjectModal()"
-                            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>
-                </div>
-            </div>
-
-            <!-- Step 2: Project Details Form (hidden initially) -->
-            <div id="projectDetailsForm" class="hidden">
-                <button onclick="backToTypeSelection()"
-                        class="mb-4 text-seismo-orange hover:text-seismo-navy">
-                    ← Back to project types
-                </button>
-
-                <form id="createProjectFormElement"
-                      hx-post="/api/projects/create"
-                      hx-swap="none">
-                    <input type="hidden" id="project_type_id" name="project_type_id">
-
                 <div class="space-y-4">
                     <div>
                         <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
-                                Project Name *
+                            Project Name <span class="text-red-500">*</span>
                         </label>
                         <input type="text"
                                name="name"
                                required
-                                   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">
+                               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 focus:ring-2 focus:ring-seismo-orange">
+                    </div>
+
+                    <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
+                        <div>
+                            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+                                Project Number
+                                <span class="text-gray-400 font-normal">(xxxx-YY)</span>
+                            </label>
+                            <input type="text"
+                                   name="project_number"
+                                   pattern="\d{4}-\d{2}"
+                                   placeholder="2567-23"
+                                   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 focus:ring-2 focus:ring-seismo-orange">
+                        </div>
+                        <div>
+                            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+                                Client Name
+                            </label>
+                            <input type="text"
+                                   name="client_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 focus:ring-2 focus:ring-seismo-orange">
+                        </div>
                     </div>
 
                     <div>
@@ -145,61 +135,70 @@
                             Description
                         </label>
                         <textarea name="description"
-                                      rows="3"
+                                  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>
+                                  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 focus:ring-2 focus:ring-seismo-orange"></textarea>
                     </div>
 
                     <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
-                            <div>
-                                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
-                                    Client Name
-                                </label>
-                                <input type="text"
-                                       name="client_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">
-                            </div>
-
                         <div>
                             <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                                 Site Address
                             </label>
                             <input type="text"
                                    name="site_address"
-                                       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">
+                                   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 focus:ring-2 focus:ring-seismo-orange">
+                        </div>
+                        <div>
+                            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+                                Site Coordinates
+                                <span class="text-gray-400 font-normal">(optional)</span>
+                            </label>
+                            <input type="text"
+                                   name="site_coordinates"
+                                   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 focus:ring-2 focus:ring-seismo-orange">
                         </div>
                     </div>
 
                     <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                         <div>
-                                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+                            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Start Date</label>
-                                    Start Date
+                            <input type="date" name="start_date"
-                                </label>
+                                   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 focus:ring-2 focus:ring-seismo-orange">
-                                <input type="date"
-                                       name="start_date"
-                                       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">
+                            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">End Date <span class="text-gray-400 font-normal">(optional)</span></label>
-                                    End Date (Optional)
+                            <input type="date" name="end_date"
-                                </label>
+                                   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 focus:ring-2 focus:ring-seismo-orange">
-                                <input type="date"
-                                       name="end_date"
-                                       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>
 
-                        <div>
+                    <!-- Modules -->
+                    <div class="border-t border-gray-200 dark:border-gray-700 pt-4">
                         <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
-                                Site Coordinates (Optional)
+                            Add Modules
+                            <span class="text-gray-400 font-normal">(optional — can be added later)</span>
+                        </label>
+                        <div class="grid grid-cols-2 gap-3">
+                            <label class="flex items-center gap-3 p-3 border border-gray-200 dark:border-gray-700 rounded-lg cursor-pointer hover:border-orange-400 has-[:checked]:border-orange-400 has-[:checked]:bg-orange-50 dark:has-[:checked]:bg-orange-900/20 transition-colors">
+                                <input type="checkbox" id="ov-module-sound" class="accent-seismo-orange">
+                                <div>
+                                    <p class="text-sm font-medium text-gray-900 dark:text-white">Sound Monitoring</p>
+                                    <p class="text-xs text-gray-500 dark:text-gray-400">SLMs, sessions, reports</p>
+                                </div>
+                            </label>
+                            <label class="flex items-center gap-3 p-3 border border-gray-200 dark:border-gray-700 rounded-lg cursor-pointer hover:border-blue-400 has-[:checked]:border-blue-400 has-[:checked]:bg-blue-50 dark:has-[:checked]:bg-blue-900/20 transition-colors">
+                                <input type="checkbox" id="ov-module-vibration" class="accent-blue-500">
+                                <div>
+                                    <p class="text-sm font-medium text-gray-900 dark:text-white">Vibration Monitoring</p>
+                                    <p class="text-xs text-gray-500 dark:text-gray-400">Seismographs, modems</p>
+                                </div>
                             </label>
-                            <input type="text"
-                                   name="site_coordinates"
-                                   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>
+                </div>
+
+                <div id="ov-create-error" class="hidden mt-3 p-3 bg-red-100 dark:bg-red-900/30 text-red-700 dark:text-red-300 rounded-lg text-sm"></div>
 
                 <div class="mt-6 flex justify-end space-x-3">
                     <button type="button"
@@ -207,15 +206,14 @@
                             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"
+                    <button type="submit" id="ov-submit-btn"
-                                class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium">
+                            class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium transition-colors">
                         Create Project
                     </button>
                 </div>
             </form>
         </div>
     </div>
-    </div>
 </div>
 
 <script>
@@ -241,31 +239,58 @@ function showCreateProjectModal() {
     document.getElementById('createProjectModal').classList.remove('hidden');
 }
 
+function showCreateProjectModal() {
+    document.getElementById('createProjectModal').classList.remove('hidden');
+    document.getElementById('createProjectFormElement').reset();
+    document.getElementById('ov-create-error').classList.add('hidden');
+}
+
 function hideCreateProjectModal() {
     document.getElementById('createProjectModal').classList.add('hidden');
-    document.getElementById('projectTypeSelection').classList.remove('hidden');
-    document.getElementById('projectDetailsForm').classList.add('hidden');
 }
 
-function selectProjectType(typeId, typeName) {
+document.getElementById('createProjectFormElement').addEventListener('submit', async function(e) {
-    document.getElementById('project_type_id').value = typeId;
+    e.preventDefault();
-    document.getElementById('projectTypeSelection').classList.add('hidden');
+    const submitBtn = document.getElementById('ov-submit-btn');
-    document.getElementById('projectDetailsForm').classList.remove('hidden');
+    const errorDiv = document.getElementById('ov-create-error');
-}
+    errorDiv.classList.add('hidden');
+    submitBtn.disabled = true;
+    submitBtn.textContent = 'Creating...';
 
-function backToTypeSelection() {
+    const formData = new FormData(this);
-    document.getElementById('projectTypeSelection').classList.remove('hidden');
+    // project_type_id no longer required — send empty string so backend accepts it
-    document.getElementById('projectDetailsForm').classList.add('hidden');
+    formData.set('project_type_id', '');
-}
 
-// Handle form submission success
+    try {
-document.body.addEventListener('htmx:afterRequest', function(event) {
+        const resp = await fetch('/api/projects/create', { method: 'POST', body: formData });
-    if (event.detail.elt.id === 'createProjectFormElement' && event.detail.successful) {
+        const result = await resp.json();
+        if (!resp.ok || !result.success) {
+            errorDiv.textContent = result.detail || result.message || 'Failed to create project';
+            errorDiv.classList.remove('hidden');
+            return;
+        }
+        const projectId = result.project_id;
+        // Add selected modules
+        if (document.getElementById('ov-module-sound').checked) {
+            await fetch(`/api/projects/${projectId}/modules`, {
+                method: 'POST', headers: {'Content-Type':'application/json'},
+                body: JSON.stringify({ module_type: 'sound_monitoring' }),
+            });
+        }
+        if (document.getElementById('ov-module-vibration').checked) {
+            await fetch(`/api/projects/${projectId}/modules`, {
+                method: 'POST', headers: {'Content-Type':'application/json'},
+                body: JSON.stringify({ module_type: 'vibration_monitoring' }),
+            });
+        }
         hideCreateProjectModal();
-        // Refresh project list
         htmx.ajax('GET', '/api/projects/list', {target: '#projects-list'});
-        // Show success message
+    } catch(err) {
-        alert('Project created successfully!');
+        errorDiv.textContent = `Error: ${err.message}`;
+        errorDiv.classList.remove('hidden');
+    } finally {
+        submitBtn.disabled = false;
+        submitBtn.textContent = 'Create Project';
     }
 });
 </script>