Add a 4096-character cap before persisting official channel tokens, map that validation failure to HTTP 400 in the dashboard route, and cover both paths with regression tests.
- replace the Discord-only config with multi-channel official channels selection
- add Telegram token handling and iMessage platform-aware runtime gating
- expand CLI, dashboard, and tests for Telegram, Discord, and iMessage
Refs #783
- add runtime injection for official Discord Channels on eligible native Claude sessions
- add CLI and dashboard configuration plus secure token handling
- add tests for launch planning, token sync, and config routing
Refs #783
Tam Nhu Tran