- Feature 1: Remote Battery Monitoring & Low-Battery LED Alert (Closes#5)
* Parse BLE Battery Service (0x180F) & Characteristic (0x2A19) with notifications and polling
* Double-pulse white LED blink on onboard NeoPixel when battery <= 15%
* Display real-time battery percentage in Web UI status bar and BLE tab
- Feature 2: Wake-on-LAN (WOL) & Advanced Actions Architecture (Closes#1)
* Implement UDP broadcast WOL Magic Packet builder and sender (ACTION_WOL = 11)
* Support MAC parsing in colon, dash, or 12-char hex formats, with port configuration
* Add 'Advanced Extension' mode in Keymap UI with WOL tester and placeholders for Macro, Webhook, and MQTT
* Persist wol_mac in NVS and handle immediate trigger on keypress
- Docs: Update README.md and ROADMAP.md reflecting new features and future plans
- Build: Update prebuilt firmware binaries in RemoteMapper-Flasher/bin