- Create files.html template with scrollable file list
- Add /files route to serve the Flash Memory page
- Add POST /api/files/export endpoint for tidEDA format
- Include file count display and search/filter functionality
- Add export, view, and delete buttons for each file
- Security: prevent path traversal in file operations
Implements FILE-03 (scroll navigation) and FILE-05 (tidEDA export)
- Add Flask backend with SocketIO for real-time updates
- Implement sensor service with mock data generation
- Create Dashboard UI with rainfall, voltage, status displays
- Create Settings UI with station, network, ADC, sensor configuration
- Create Calibration UI with live ADC readings and rainfall reset
- Touch-optimized interface with 64px touch targets for 7" display
Implements: DASH-01 through DASH-09, UI-01 through UI-03,
SETT-01 through SETT-08, CAL-01 through CAL-04, BACK-01 through BACK-03
