Fixes chat sessions not showing the working/"Thinking…" indicator when returning to a session whose generation was already in flight but hadn't emitted its first delta yet.
- useChat.ts: selectSession's authoritative fetchChatSession refresh now reattaches whenever refreshedSession.isGenerating===true, instead of also requiring a populated inFlightGeneration snapshot (which is null pre-first-delta)
- Added a guard so the reattach only proceeds if the user hasn't navigated away from the session while the refresh was in flight (activeSessionRef.current?.id === id)
- Calls attachIfGenerating(id, refreshedSession.inFlightGeneration, { silent: true }) when no stream is already attached, reusing existing double-attach guarding
- Added regression tests in useChat.test.ts covering the reattach-on-isGenerating-alone behavior and the stale-session navigation guard
- Added a patch changeset documenting the fix
Files changed:
.changeset/fn-7656-chat-reattach-working-state.md | 7 ++
.../dashboard/app/hooks/__tests__/useChat.test.ts | 113 +++++++++++++++++++++
packages/dashboard/app/hooks/useChat.ts | 22 +++-
3 files changed, 141 insertions(+), 1 deletion(-)
Fusion-Task-Id: FN-7656
Fusion-Task-Lineage: c923c16a-391f-4475-aab8-6194bbc675f7
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
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