Christian Gick 9578e0406b feat: Matrix E2EE key management + multi-user isolation ...

- Add rag_key_manager.py: stores encryption key in private E2EE room
- Bot loads key from Matrix on startup, injects into RAG via portal proxy
- No plaintext key on disk (removed RAG_ENCRYPTION_KEY from .env)
- Pass owner_id (matrix_user_id) to RAG search for user isolation
- Stronger format_context instructions for source link rendering

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-03 11:19:02 +00:00

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