Changes:
- Add sign initiator handling for participant_joined events in MainViewModel
- Add sign initiator handling for session_started events in MainViewModel
- Add sign initiator handling for all_joined events in MainViewModel
- Set pendingSessionId in TssRepository.createSignSession for event matching
- Refactor initiateSignSession to wait for session_started instead of starting immediately
- Add PendingSignInitiatorInfo data class to store pending sign info
- Add sessionAlreadyInProgress flag to SignSessionResult for immediate trigger case
This fixes the issue where sign initiator couldn't detect when other parties
joined the signing session, making Android flow 100% consistent with Electron.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
hailin
16e1e9159c
