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fix(FN-3760): add SSE first-event watchdog for legacy chat streams

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- Add a first-event watchdog in legacy chat SSE handling to prevent hangs before initial stream data
- Cover watchdog behavior with legacy chat stream API tests
- Add hook-level regression tests for useChat and useQuickChat first-send stream scenarios
- Include a changeset for @runfusion/fusion patch release

Fusion-Task-Id: FN-3760
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Fusion
2026-05-08 20:45:45 -07:00
committed by gsxdsm
parent 9cfc2875d3
commit 9c86771295
5 changed files with 133 additions and 5 deletions
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.changeset/FN-3760-first-send-hang-fix.md Normal file
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"@runfusion/fusion": patch
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Fix first chat message send hanging on "Connecting…" — the initial SSE stream now completes reliably on cold-start.