* fix(signal): handle reactions inside dataMessage.reaction
Signal reactions can arrive in two formats:
1. envelope.reactionMessage (already handled)
2. envelope.dataMessage.reaction (now handled)
The signal-cli SSE events use the second format, which was being
misinterpreted as a message with attachments, leading to 'broken
media / attachments' errors.
Changes:
- Add reaction property to SignalDataMessage type
- Check both envelope.reactionMessage and dataMessage.reaction
- Improve body content detection to properly identify reaction-only messages
- Add test for dataMessage.reaction format
* fix(signal): reaction notifications work when account is phone number
When reactionNotifications mode is 'own', notifications would never fire
because resolveSignalReactionTarget() returned a UUID but
shouldEmitSignalReactionNotification() compared it against the account
phone number, which never matched.
The fix:
- Add optional 'phone' field to SignalReactionTarget type
- Extract phone number first in resolveSignalReactionTarget(), include
it even when UUID is present
- In shouldEmitSignalReactionNotification() 'own' mode, check phone
match first before falling back to UUID comparison
This ensures reactions to your own messages are properly detected when
the Signal account is configured as a phone number and the reaction
event contains both targetAuthor (phone) and targetAuthorUuid.
* fix(signal): include phone in reaction target for own-mode matching
When targetAuthorUuid is present, also store targetAuthor phone number
in the reaction target. This allows own-mode reaction notifications to
match when comparing account phone against UUID-based targets.
