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

record_mic.py

@@ -0,0 +1,62 @@
+import json
+import os
+import subprocess
+from datetime import datetime
+
+import httpx
+from dotenv import load_dotenv
+
+load_dotenv()
+
+HOST = os.environ["HOST"]
+PRIVATE_BASE = f"https://{HOST}/proxy/protect/api"
+USERNAME = os.environ["UNIFI_USERNAME"]
+PASSWORD = os.environ["UNIFI_PASSWORD"]
+
+CAMERA_NAME = "G6 Pro 360"
+OUTPUT_DIR = "./data"
+
+
+def main():
+    body = json.dumps({"username": USERNAME, "password": PASSWORD, "rememberMe": False}).encode()
+
+    # Accept-Encoding must be suppressed at request level — server returns 403 when present
+    with httpx.Client(verify=False, http2=True) as client:
+        client.post(
+            f"https://{HOST}/api/auth/login",
+            content=body,
+            headers={"Content-Type": "application/json", "Accept-Encoding": ""},
+        ).raise_for_status()
+
+        cameras = client.get(f"{PRIVATE_BASE}/cameras").raise_for_status().json()
+        camera = next(c for c in cameras if CAMERA_NAME in c["name"])
+
+    rtsp_alias = next(ch["rtspAlias"] for ch in camera["channels"] if ch.get("isRtspEnabled"))
+    rtsp_url = f"rtsps://{HOST}:7441/{rtsp_alias}?enableSrtp"
+
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    output = f"{OUTPUT_DIR}/recording_{timestamp}.wav"
+
+    print(f"Recording from: {camera['name']}")
+    print(f"Output: {output}")
+    print("Press Ctrl+C to stop.")
+
+    proc = subprocess.Popen([
+        "ffmpeg", "-y",
+        "-rtsp_transport", "tcp",
+        "-i", rtsp_url,
+        "-vn",
+        "-acodec", "pcm_s16le",
+        output,
+    ])
+
+    try:
+        proc.wait()
+    except KeyboardInterrupt:
+        proc.terminate()
+        proc.wait()
+        print(f"\nSaved to {output}")
+
+
+if __name__ == "__main__":
+    main()