fix(55-desktop-collapsed-sidebar-fix): ukrycie etykiet i centrowanie ikon w zwiniętym sidebarze

Zwiniety sidebar (is-collapsed) pokazywal obciete etykiety zamiast
czystych ikon. Naprawiono: display:none na labelach/strzalkach/sublinkach,
justify-content:center na linkach, ukrycie brand text.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.paul/phases/55-desktop-collapsed-sidebar-fix/55-01-SUMMARY.md

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+---
+phase: 55-desktop-collapsed-sidebar-fix
+plan: 01
+subsystem: ui
+tags: [sidebar, collapsed, desktop, css-fix]
+
+requires:
+  - phase: 52-mobile-main-menu
+    provides: mobile sidebar overlay
+provides:
+  - Clean collapsed sidebar on desktop with icon-only display
+affects: []
+
+tech-stack:
+  added: []
+  patterns: []
+
+key-files:
+  created: []
+  modified:
+    - resources/scss/app.scss
+    - public/assets/css/app.css
+
+key-decisions:
+  - "display:none na labelach/strzalkach zamiast overflow clip — czyste ukrycie"
+  - "justify-content:center + margin 0 6px na linkach — centrowanie ikon"
+
+patterns-established: []
+
+duration: ~5min
+started: 2026-03-29
+completed: 2026-03-29
+---
+
+# Phase 55 Plan 01: Desktop Collapsed Sidebar Fix Summary
+
+**Naprawa zwinietego sidebara na desktop — ukrycie etykiet, centrowanie ikon, czysty wyglad icon-only**
+
+## Performance
+
+| Metric | Value |
+|--------|-------|
+| Duration | ~5min |
+| Started | 2026-03-29 |
+| Completed | 2026-03-29 |
+| Tasks | 3 completed (2 auto + 1 checkpoint) |
+| Files modified | 2 |
+
+## Acceptance Criteria Results
+
+| Criterion | Status | Notes |
+|-----------|--------|-------|
+| AC-1: Etykiety ukryte | Pass | display:none na .sidebar__label |
+| AC-2: Ikony wycentrowane | Pass | justify-content:center + margin 0 6px |
+| AC-3: Brand i strzalki ukryte | Pass | display:none na brand-text, toggle-arrow, group-links |
+
+## Accomplishments
+
+- Etykiety menu ukryte (display:none zamiast overflow clip)
+- Ikony wycentrowane w 52px z margin 0 6px
+- Brand text ukryty, collapse button wycentrowany
+- Strzalki toggle grup ukryte
+- Sublinki i group-links ukryte przy collapse
+- Padding boczny usuniety (padding: 18px 0)
+
+## Files Created/Modified
+
+| File | Change | Purpose |
+|------|--------|---------|
+| `resources/scss/app.scss` | Modified | Rozszerzenie .sidebar.is-collapsed o ukrywanie elementow |
+| `public/assets/css/app.css` | Modified | Kompilacja SCSS |
+
+## Deviations from Plan
+
+None — plan executed exactly as written
+
+## Issues Encountered
+
+None
+
+## Next Phase Readiness
+
+**Ready:** Sidebar desktop dziala poprawnie w obu stanach
+**Concerns:** None
+**Blockers:** None
+
+---
+*Phase: 55-desktop-collapsed-sidebar-fix, Plan: 01*
+*Completed: 2026-03-29*