6062083b5e
- Upgraded LVGL from 8.4 to 9.5.0 (new display/input API) - Rewrote DisplayManager for LVGL 9 (lv_display_create, tick callback) - New lv_conf.h for v9.5 with optimized widget selection - Premium dark AMOLED UI with gradient panels, status dots, storage bar - Backend: Wi-Fi from SD JSON, NTP Vienna, SimpleFTPServer on SD_MMC - Removed 6 unused sensor libs, added ArduinoJson + SimpleFTPServer - Build: 19% RAM, 4.6% Flash — verified compilation success