Add charge status monitoring and LED control

- Add LED_0 pin definition and charge status GPIO pin
- Implement charge status monitoring in main loop
- Add LED visual indicators for charging state
- Configure LVGL Montserrat 10 font and set as default
- Reset GPIO pins to clear SPI configurations
- Update COM port to COM14 in VSCode settings

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/settings.local.json

@@ -22,7 +22,8 @@
       "Bash(curl -s http://127.0.0.1:5000/)",
       "Bash(./build_web_macos.sh:*)",
       "Bash(./dist/ESP32_Flasher.app/Contents/MacOS/ESP32_Flasher:*)",
-      "Bash(where:*)"
+      "Bash(where:*)",
+      "Bash(idf.py size-components:*)"
     ],
     "deny": []
   }