add mic recording, rename scripts, extend camera dump

- Rename main.py → play_speaker.py
- Add record_mic.py: record audio from camera mic via RTSP to a
  timestamped WAV in data/
- Add private API camera dump to dump_camera.py
- Update README scripts section

README.md

@@ -32,8 +32,10 @@ access to settings not exposed by the official API, consider
 [uiprotect](https://github.com/uilibs/uiprotect) — an unofficial Python library
 wrapping the private UniFi Protect API.
 
-## Run
+## Scripts
 
 ```sh
-uv run main.py
+uv run play_speaker.py   # play hello.wav through the camera speaker
+uv run record_mic.py     # record from the camera mic (Ctrl+C to stop)
+uv run dump_camera.py    # dump camera data from integration + private API
 ```