v2.5.0: Thread-safe timing, theme engine, modular web UI, kiosk mode

Highlights

• Thread-safe ISR timing — portMUX_TYPE spinlocks on all 64-bit timing variables across dual-core ESP32-S3
• Theme engine — 5 selectable CSS themes (Interceptor, Classic, Daytona, Case File, Cyber)
• Modular web UI — LittleFS-first HTML/CSS/JS with PROGMEM fallback
• Kiosk mode — ?kiosk URL parameter or Ctrl+K for display-only presentation
• Dual-layout navigation — Desktop sticky tabs + mobile bottom thumb bar
• NTP timestamps — Wall-clock time in serial log ring buffer with timezone support
• Regional settings — Imperial/metric units, configurable POSIX timezone
• WiFi diagnostics — /api/wifi-status endpoint with RSSI, failure reasons
• Captive portal fix — OS-specific handlers for iOS, Android, and Windows CNA detection
• Peer hotlinks — Clickable hostname.local links to paired devices
• Named constants — 20+ magic numbers extracted to #define constants
• Dead code cleanup — Removed unused functions from lidar, WLED, and ESP-NOW modules
• push_ui.sh — Remote LittleFS UI update script over HTTP

Upgrade Notes

• No breaking config changes — existing config.json is compatible
• New LittleFS UI files are optional — PROGMEM fallback serves pages without them
• To use the new modular UI, run pio run -t uploadfs or use push_ui.sh

See CHANGELOG.md for full details.

Firmware Binary

MD5: 6cf3af27f4d91519b2c5ed13521ce778
Size: 1,744,448 bytes (1.66 MB)
Board: ESP32-S3-WROOM-1 (N16R8)