- Add VOICE_MODES constant and VoiceMode type to shared validators/chat.ts
- Extend createMessageSchema with optional voiceMode enum field
- Add voiceMode optional field to ChatMessage interface in types/chat.ts
- Add 36-voice-schema.test.ts with 6 passing tests for voiceMode validation
- Add ChatFile, ChatFileReference, ChatFileUploadResponse, ChatFileListResponse interfaces to types/chat.ts
- Add optional files?: ChatFile[] field to ChatMessage interface
- Add uploadChatFileSchema and createFileReferenceSchema Zod validators to validators/chat.ts
- Re-export all new types and validators from shared/src/index.ts
- Create test stubs for chat-file-service.test.ts and chat-file-routes.test.ts with it.todo() entries
- Add message_type text column to chat_messages Drizzle schema
- Create SQL migration 0049_add_message_type.sql
- Update _journal.json with entries for idx 47, 48, 49
- Add messageType field to ChatMessage interface
- Add messageType to createMessageSchema (optional)
- Add handoffSchema and Handoff type to validators/chat.ts
- Re-export handoffSchema and Handoff from shared/src/index.ts