🐛(frontend) preserve title when adding an emoji

[fch-aa]

Fixes #2529

Purpose

Fix a race condition when renaming a newly created page and immediately adding
an emoji. The emoji update previously reused the stale document title, causing
the new title to disappear.

Proposal

• Keep the latest submitted title available to the emoji action
• Add a regression test covering rename followed immediately by emoji addition

Validated with:

• corepack yarn lint
• corepack yarn test — 55 Yjs and 304 Impress tests
• Targeted DocHeader emoji tests
• Stylelint and the Next.js production build

Video

2026-08-14.13-34-09.mp4

External contributions

Thank you for your contribution! 🎉

General requirements

• I have read and followed the contributing guidelines
• I have read and agreed to the Code of Conduct
• I have added corresponding tests for new features or bug fixes

CI requirements

• I made sure that all existing tests are passing
• I have signed off my commits with git commit --signoff (DCO compliance)
• I have signed my commits with my SSH or GPG key (git commit -S)
• My commit messages follow the required format: <gitmoji>(type) title description
• I have added a changelog entry under ## [Unreleased] section (if noticeable change)

AI requirements

• I used AI assistance to produce part or all of this contribution
• I have read, reviewed, understood and can explain the code I am submitting
• I can jump in a call or a chat to explain my work to a maintainer

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 4cf83a03-f6c3-482e-9183-9344c02e9f5a

📥 Commits

Reviewing files that changed from the base of the PR and between fb984ab and 11938f4.

📒 Files selected for processing (4)

• CHANGELOG.md
• src/frontend/apps/impress/src/features/docs/doc-header/__tests__/DocHeaderEmoji.spec.tsx
• src/frontend/apps/impress/src/features/docs/doc-header/components/DocHeader.tsx
• src/frontend/apps/impress/src/features/docs/doc-header/components/DocTitle.tsx

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Walkthrough

DocTitle reports sanitized title changes through a new optional callback. DocHeader stores the latest title in a ref and uses it for emoji additions and removals. Tests cover editing the title immediately before adding an emoji. The changelog records the fix.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 11938

This localized frontend fix preserves the latest page title when an emoji is added immediately after renaming; no actionable merge-blocking risk remains beyond normal checks and review.

Suggested reviewers: antolc, ovgodd

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the frontend fix that preserves the document title when adding an emoji.
Description check	✅ Passed	The description clearly explains the race condition, the proposed fix, regression coverage, and validation performed.
Linked Issues check	✅ Passed	The changes address issue #2529 by preserving the latest title during emoji updates and adding a regression test.
Out of Scope Changes check	✅ Passed	The changelog entry, implementation changes, and regression tests are directly related to issue #2529.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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