- Edit (pencil) button appears on idle recorder cards; hidden while recording
- openEditPanel() pre-populates all form fields from existing recorder state
- openPanel() resets editingId and restores "New recorder" defaults
- closePanel() clears editingId and removes any stale probe result
- handleSaveRecorder() dispatches PATCH /recorders/:id in edit mode, POST otherwise
- Fix field name bugs in create path: codec→recording_codec, resolution→recording_resolution,
proxy_config object→proxy_enabled/proxy_codec/proxy_resolution flat fields
- Badge in card now reads rec.recording_codec (correct DB field) instead of rec.codec
- Bump api.js cache-buster to v=6
ZGaetano
508cf8d41b