docs(ui): note the symmetric Immersive button in FullscreenLyrics header

[InstaZDLL]

Summary

• One-line docs fix: the Immersive Now Playing section in docs/features/ui.md listed the PlayerBar entry points but never mentioned the new Maximize2 button in the FullscreenLyrics header that closes the round-trip Lyrics → Immersive (added in PR feat(lyrics): add immersive button to fullscreen lyrics header #124 / issue feat: add a Immersive Now Playing button from Fullscreen Lyrics #109).
• Caught while doing a post-release audit of docs vs. code.

Test plan

• Render the docs / read the diff — wording reads naturally next to the existing PlayerBar entry-points sentence.

Summary by CodeRabbit

• Documentation
  • Mise à jour de la documentation UI/UX pour Immersive Now Playing : clarification des points d'accès depuis la barre (clic cover et icône Maximize), navigation entre les vues Immersive et Lyrics fullscreen, et gestes de fermeture disponibles (Escape ou bouton X).

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 867efbe1-c8f2-485b-99a3-125deba6940e

📥 Commits

Reviewing files that changed from the base of the PR and between 3012cd5 and eae3201.

📒 Files selected for processing (1)

• docs/features/ui.md

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📝 Walkthrough

Walkthrough

Mise à jour de la documentation UI/UX pour décrire l'overlay Immersive Now Playing : points d'entrée depuis PlayerBar (clic cover et bouton Maximize2), navigation bidirectionnelle vers Lyrics fullscreen, fermeture via Escape/X, et gestion locale de l'état sans PlayerContext.

Changes

Documentation Immersive Now Playing

Layer / File(s)	Summary
Documentation de la navigation Immersive et fermeture fullscreen docs/features/ui.md	Ajout d'une section décrivant les deux points d'entrée (clic cover et Maximize2), la navigation aller-retour Immersive ↔ Lyrics, la fermeture (Escape/X), et le mutex fullscreen maintenant une seule overlay active à la fois.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• InstaZDLL/WaveFlow#124: Implémentation du bouton Maximize2 dans FullscreenLyrics pour la navigation Immersive ↔ Lyrics que cette documentation décrit.

Poem

📖 La doc brille enfin claire,
Immersive danse en plein air,
Maximize2 fait les allers-retours,
Entre Lyrics et ombres du jour,
Le mutex veille, un seul overlay pour toujours ! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	Le titre suit les Conventional Commits avec un scope kebab-case et décrit précisément l'ajout du bouton Maximize2 dans FullscreenLyrics.
Description check	✅ Passed	La description couvre les sections essentielles : sommaire avec contexte, lien vers la PR/issue précédente, et plan de test (bien que partiel).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/fullscreen-lyrics-immersive-button

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