fix(scale)+docs: fix scale calculator units (cm not m), update CLAUDE.md+ROADMAP.md

Scale calculator:
- Real input now in cm (not m) — more natural for architects
- Drawing output in mm (unchanged)
- Formula: drawing_mm = real_cm * 10 / scale (was val/scale, wrong)
- Reverse: real_cm = drawing_mm * scale / 10 (was val*scale, wrong)
- Secondary display: real in m; drawing in cm; reverse also shows mm
- Added 1:20 preset (useful for detail drawings)
- Removed Camere tab (not useful)

Docs:
- CLAUDE.md: update Mini Utilities 0.3.0 + Password Vault 0.4.0 descriptions
- ROADMAP.md: add task 8.04 (this session), bump module versions, renumber 8.05-8.08

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ROADMAP.md

@@ -36,13 +36,13 @@
 | 2   | Email Signature    | 0.1.0   | COMPLETE  | US/SDT addresses may need update                    | AD sync, branding packs, promo banners            |
 | 3   | Word XML           | 0.1.0   | COMPLETE  | —                                                   | Schema validator, visual mapper                   |
 | 4   | Digital Signatures | 0.1.0   | COMPLETE  | —                                                   | Permission layers, document insertion             |
-| 5   | Password Vault     | 0.3.0   | COMPLETE  | —                                                   | Hardware key, rotation reminders, Passbolt        |
+| 5   | Password Vault     | 0.4.0   | COMPLETE  | —                                                   | Hardware key, rotation reminders, Passbolt        |
 | 6   | IT Inventory       | 0.2.0   | COMPLETE  | —                                                   | Network scan import                               |
 | 7   | Address Book       | 0.1.1   | COMPLETE  | —                                                   | Email sync, deduplication                         |
 | 8   | Prompt Generator   | 0.2.0   | HARDENING | Bug fixes, new idea TBD                             | Prompt scoring, more image templates              |
 | 9   | Word Templates     | 0.1.0   | COMPLETE  | No clause library; no Word generation               | Diff compare, document generator                  |
 | 10  | Tag Manager        | 0.2.0   | HARDENING | Logic/workflow fix, ERP API exposure needed         | Smart suggestions                                 |
-| 11  | Mini Utilities     | 0.2.0   | COMPLETE  | —                                                   | More converters, more tools TBD                   |
+| 11  | Mini Utilities     | 0.3.0   | COMPLETE  | —                                                   | More converters, more tools TBD                   |
 | 12  | Dashboard          | 0.1.0   | COMPLETE  | —                                                   | Custom dashboards per role                        |
 | 13  | AI Chat            | 0.2.0   | COMPLETE  | Needs API key env vars for real AI                  | Streaming, model selector, conversation templates |
 | 14  | Hot Desk           | 0.1.1   | COMPLETE  | —                                                   | —                                                 |
@@ -845,25 +845,38 @@ Env vars (hardcoded in docker-compose.yml for Portainer CE):
 
 ---
 
-### 8.04 `[STANDARD]` Registratura — Print/PDF Export
+### 8.04 ✅ `[STANDARD]` Mini Utilities + Password Vault — UX Improvements (2026-03-12)
+
+**What:** TVA calculator with configurable rate, new scale calculator for drawings, multi-user support in Password Vault.
+**Implemented:**
+- **TVA cotă configurabilă**: preseturi 5%/9%/19%/21% + câmp custom; rata efectivă afișată în rezultate; titlu card actualizat dinamic
+- **Calculator scară desen** (tab nou "Scară"): modul Real→Desen (input cm, output mm) și Desen→Real (input mm, output cm); 7 preseturi 1:20..1:5000 + scară custom 1:X; afișare secundară în m/cm; copy button pe rezultat
+  - Logică: `drawing_mm = real_cm × 10 / scale` / `real_cm = drawing_mm × scale / 10`
+- **Password Vault — utilizatori multipli**: tip `VaultUser { username, password, email?, notes? }`; câmp `additionalUsers: VaultUser[]` pe `VaultEntry`; secțiune colapsibilă "Utilizatori suplimentari" în form; badge cu numărul de utilizatori în lista de intrări; normalizare backward-compat în `useVault` hook
+**Files:** `src/modules/mini-utilities/components/mini-utilities-module.tsx`, `src/modules/password-vault/types.ts`, `src/modules/password-vault/components/password-vault-module.tsx`, `src/modules/password-vault/hooks/use-vault.ts`
+**Versions:** Mini Utilities 0.2.0→0.3.0, Password Vault 0.3.0→0.4.0
+
+---
+
+### 8.05 `[STANDARD]` Registratura — Print/PDF Export
 
 **What:** Export registry as formatted PDF. Options: full registry, single entry, deadline summary.
 
 ---
 
-### 8.05 `[STANDARD]` Word Templates — Clause Library + Document Generator
+### 8.06 `[STANDARD]` Word Templates — Clause Library + Document Generator
 
 **What:** In-app clause composition, template preview, simple Word generation from templates.
 
 ---
 
-### 8.06 `[STANDARD]` N8N Webhook Integration
+### 8.07 `[STANDARD]` N8N Webhook Integration
 
 **What:** Fire webhooks on events (new entry, deadline approaching, status change). N8N at http://10.10.10.166:5678.
 
 ---
 
-### 8.07 `[STANDARD]` Mobile Responsiveness Audit
+### 8.08 `[STANDARD]` Mobile Responsiveness Audit
 
 **What:** Test all modules on 375px/768px. Fix overflowing tables, forms, sidebar.