Fix chat image/file attachments not rendering until re-entering the thread by reconciling the optimistic temp user bubble with the persisted user-message SSE echo during active streaming.
- In useChat, when a persisted user-role message arrives via chat:message:added while the active session is streaming, replace the optimistic temp-* bubble with the reconciled persisted message (real id + attachment filenames) instead of leaving the temp bubble in place with no refetch.
- Add regression coverage: persisted user attachment echo reconciles without duplicate/refetch, attachment-only echo reconciles content+attachments, and text-only echo still reconciles without duplicating messages.
- Extend test helper makeMessage to pass through attachments overrides.
Files changed:
.../dashboard/app/hooks/__tests__/useChat.test.ts | 160 +++++++++++++++++++++
packages/dashboard/app/hooks/useChat.ts | 13 ++
2 files changed, 173 insertions(+)
Fusion-Task-Id: FN-7849
Fusion-Task-Lineage: dbabda9c-5842-4d16-bafb-776a6536e51f
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
3d7eaeabee