Propagate Matrix thread metadata from inbound events and attach
m.relates_to
(rel_type=m.thread, m.in_reply_to, is_falling_back=true) to outbound
messages
including attachments. Add tests for thread metadata and thread replies.
- extend message tool with optional media paths for channel delivery
- switch Matrix uploads to stream providers and handle encrypted-room payloads
- add/expand tests for message tool media forwarding and Matrix upload edge cases
- Replaces the explicit media event tuple with MATRIX_MEDIA_EVENT_FILTER
based on
media base classes: (RoomMessageMedia, RoomEncryptedMedia).
- Keeps MatrixMediaEvent as the static typing alias for media-specific
handlers.
- Removes MatrixInboundEvent and uses RoomMessage in mention-related
logic.
- Adds regression tests for:
- callback registration using MATRIX_MEDIA_EVENT_FILTER
- ensuring RoomMessageText is not matched by the media filter.
