Add end-to-end encryption support to the Matrix bot using the matrix-sdk
crypto features. The bot now:
- Enables E2EE on the Matrix client with cross-signing bootstrapping
- Auto-verifies its own cross-signing identity on startup
- Handles key verification requests from other users automatically
- Sends encrypted messages in E2EE-enabled rooms
- Adds MATRIX_STORE_PATH config for persistent crypto store
Squash merge of feature/story-194_story_enable_matrix_e2ee_with_cross_signing_verification_on_bot
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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