- Added .nav-logo CSS styling to dashboard.html, settings.html, calibration.html, files.html
- Added logo image at start of each navigation bar using logo/[LOGO] TCK.svg
- Logo displays at 40px height, touch-friendly sizing
- 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)
