feat(factory): add local flashing toolkit and secure OTA defaults

tools/esptool-factory/flash_encrypted_gui.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+"""
+TalkingQ Drawing Robot - Factory Flashing GUI (local-only).
+
+Minimal Tkinter GUI to avoid Windows batch quirks. Relies on python -m esptool /
+espefuse, and bin files placed in the same folder as this script / exe.
+Designed to be PyInstaller-friendly.
+"""
+from __future__ import annotations
+
+import sys
+
+from factory_gui.app import main
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        sys.exit(1)