- Replace all response.data ?? [] with (response.data ?? response)
pattern across 14 files to handle SDK array-shaped responses
- Normalize SDK parts in parts-reader.ts by injecting sessionID/
messageID before validation (P1: SDK parts lack these fields)
- Treat unknown part types as having content in
recover-empty-content-message-sdk.ts to prevent false placeholder
injection on image/file parts
- Replace local isRecord with shared import in parts-reader.ts
- Make id field optional in all Todo interfaces (TodoInfo, Todo, TodoItem)
- Fix null-unsafe comparisons in todo-sync.ts to handle missing ids
- Add test case for todos without id field preservation
- All tests pass and typecheck clean
