Christian Gick bfc717372c fix(voice): add MSC4143 call.member encryption key support ...

Element Call v0.17+ embeds encryption_keys in call.member state events
instead of separate timeline events. In E2EE rooms, timeline events are
encrypted and the bot HTTP fetch cannot decrypt them, causing DEC_FAILED.

- Extract caller keys from call.member state event on join
- Embed bot key in call.member state event
- Check call.member state in key fetch (before timeline fallback)
- Handle key updates in call.member during active calls
- Update voice.py key poller to check call.member state first
- Add debug logging for UnknownEvent types in call rooms

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-23 08:12:58 +02:00

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