🧷 refactor: Split useResumeOnLoad by Responsibility

[berry-13]

Pull Request

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Documentation changes belong in the LibreChat documentation repository.

Summary

useResumeOnLoad.ts (1,087 lines) did four things in one hook: tracking runs the server owes a conversation (queued-turn receipts, the active-job list and the quiet-window latch), re-arming the resume check when such a run is announced or resumeStream asks, settling what a run that ended while the pane was away left behind, and building the resume submission itself. It also carried its own copies of the steer-chip seed and settle callbacks that useResumableSSE already had.

This splits it by responsibility in client/src/hooks/SSE/: useOwedSuccessor (the owed-run latch), useResumeAnnouncements (the re-arm on announcements and resume requests), and finished.ts (settling a finished run), with the steer chips taken from the shared useSteerChips instead of the duplicated callbacks. useResumeOnLoad.ts keeps the resume decision and is now 437 lines. No behavior changes. Stacked on #17133.

Type of change

• Refactor

Testing

Tested environments/configuration:

Not applicable: the logic is moved, not changed; the two removed steer callbacks were line-for-line the shared ones.

Automated tests:

• useResumeOnLoad.spec.tsx (3,100 lines) and the rest of the hooks/SSE and hooks/Chat specs plus data-provider/SSE, unchanged: 1148 pass.
• npx tsc --noEmit in client, eslint, prettier and sort-imports on the changed files: clean.

Screenshots / recordings

No user-facing change.

Risk / compatibility

None.

Checklist

• I reviewed my own changes
• Existing relevant tests pass
• The change does not introduce new warnings or errors

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-16T19:40:00.255446Z	b860d82	New commits
🔒 Security Review	✅ Completed 2026-10-15T07:14:39.137101Z	6b607ba	PR opened

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