- Add BRIDGE_MODE to DEFAULT_FEATURES in dev.ts
- Implement peerSessions.ts: cross-session messaging via bridge API
- Implement webhookSanitizer.ts: redact secrets from webhook payloads
- Replace any stubs in controlTypes.ts with Zod schema-inferred types
- Fix tengu_bridge_system_init default to true for app "active" status
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>