docs: update CLAUDE.md, ROADMAP.md, SESSION-LOG.md

- Registratura v0.4.0 with QuickLook preview description
- New task 3.03d: QuickLook + bug fixes (NAS links, overflow, vault filter)
- Session log updated with all fixes and new features
- attachment-preview.tsx added to key files list

ROADMAP.md

@@ -316,6 +316,19 @@
 - ✅ **Table UX cleanup**: click pe rând deschide detail sheet, acțiuni reduse la View + Edit, Close/Delete mutate în sheet
 - ✅ **Row click navigation**: cursor-pointer pe rânduri, Eye icon + Pencil icon în acțiuni
 
+### 3.03d ✅ `[STANDARD]` Registratura — QuickLook Attachment Preview + Bug Fixes (2026-02-28)
+
+**Implementat:**
+
+- ✅ **QuickLook-style preview modal** (`attachment-preview.tsx`, ~480 lines): fullscreen dark overlay cu animații
+- ✅ **Image preview**: zoom with scroll wheel + buttons (25%–500%), pan/drag when zoomed, reset cu tasta 0
+- ✅ **PDF preview**: native browser PDF viewer via blob URL iframe (scroll, zoom, print built-in)
+- ✅ **Multi-file navigation**: săgeți stânga/dreapta (keyboard + butoane), thumbnail strip în josul ecranului
+- ✅ **Actions**: download, print, close (Esc)
+- ✅ **NAS link fix**: `file:///` URLs blocked by browsers — replaced with copy-to-clipboard + "Copiat!" feedback
+- ✅ **NAS card overflow fix**: disabled horizontal scroll on Radix ScrollArea viewport, redesigned card to single-row compact
+- ✅ **Password Vault filter reset**: category/search reset to "all" after add/edit
+
 ### 3.04 ✅ `[ARCHITECTURE]` Autentificare & Identitate (2026-02-27)
 
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