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>

CLAUDE.md

@@ -105,8 +105,8 @@ legacy/                         # Original HTML tools for reference
 | 5   | **Tag Manager**        | `/tag-manager`        | 0.2.0   | CRUD tags, category/scope/color, US/SDT seeds, mandatory categories, **ManicTime bidirectional sync**                                                                                                                                                                                                                                                                                           |
 | 6   | **IT Inventory**       | `/it-inventory`       | 0.2.0   | Dynamic equipment types, rented status (purple pulse), **42U rack visualization**, type/status/company filters                                                                                                                                                                                                                                                                                  |
 | 7   | **Address Book**       | `/address-book`       | 0.1.1   | CRUD contacts, card grid, vCard export, Registratura reverse lookup, **dynamic types (creatable)**, **alphabetically sorted type dropdown**                                                                                                                                                                                                                                                     |
-| 8   | **Password Vault**     | `/password-vault`     | 0.3.0   | CRUD credentials, 9 categorii cu iconițe, **WiFi QR code real**, context-aware form, strength meter, company scope, **AES-256-GCM encryption**                                                                                                                                                                                                                                                  |
+| 8   | **Password Vault**     | `/password-vault`     | 0.4.0   | CRUD credentials, 9 categorii cu iconițe, **WiFi QR code real**, context-aware form, strength meter, company scope, **AES-256-GCM encryption**, **utilizatori multipli per intrare** (VaultUser[]: username/password/email/notes, colapsibil în form, badge în list)                                                                                                                           |
-| 9   | **Mini Utilities**     | `/mini-utilities`     | 0.2.0   | Text case, char counter, percentage, **TVA calculator (19%)**, area converter, U→R, num→text, artifact cleaner, MDLPA, **extreme PDF compression (GS+qpdf)**, PDF unlock, **DWG→DXF**, OCR, color palette, **paste on all drop zones**, **thermal drag-drop reorder**                                                                                                                           |
+| 9   | **Mini Utilities**     | `/mini-utilities`     | 0.3.0   | Text case, char counter, percentage, **TVA calculator (cotă configurabilă: 5/9/19/21% + custom)**, area converter, U→R, num→text, artifact cleaner, MDLPA, **extreme PDF compression (GS+qpdf)**, PDF unlock, **DWG→DXF**, OCR, color palette, **paste on all drop zones**, **thermal drag-drop reorder**, **Calculator scară desen** (real cm↔desen mm, 7 preseturi 1:20..1:5000 + custom)  |
 | 10  | **Prompt Generator**   | `/prompt-generator`   | 0.2.0   | Template-driven prompt builder, **18 templates** (14 text + 4 image), search bar, target type filter                                                                                                                                                                                                                                                                                            |
 | 11  | **Digital Signatures** | `/digital-signatures` | 0.1.0   | CRUD assets, drag-and-drop file upload, tag chips                                                                                                                                                                                                                                                                                                                                               |
 | 12  | **Word Templates**     | `/word-templates`     | 0.1.0   | Template library, 8 categories, version tracking, .docx placeholder auto-detection                                                                                                                                                                                                                                                                                                              |

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.
 

src/modules/mini-utilities/components/mini-utilities-module.tsx

@@ -2527,6 +2527,7 @@ function ColorPaletteExtractor() {
 // ─── Calculator Scară ─────────────────────────────────────────────────────────
 
 const SCALE_PRESETS = [
+  { label: "1:20", value: 20 },
   { label: "1:50", value: 50 },
   { label: "1:100", value: 100 },
   { label: "1:200", value: 200 },
@@ -2535,6 +2536,15 @@ const SCALE_PRESETS = [
   { label: "1:5000", value: 5000 },
 ];
 
+/**
+ * Scale calculator — all real dimensions in cm, drawing in mm.
+ *
+ * Real → Desen:  drawing_mm = real_cm × 10 / scale
+ *   e.g. 350 cm at 1:100 → 350 × 10 / 100 = 35 mm
+ *
+ * Desen → Real:  real_cm = drawing_mm × scale / 10
+ *   e.g. 35 mm at 1:100 → 35 × 100 / 10 = 350 cm = 3.50 m
+ */
 function ScaleCalculator() {
   const [scale, setScale] = useState(100);
   const [customScale, setCustomScale] = useState("");
@@ -2547,27 +2557,22 @@ function ScaleCalculator() {
     customScale !== "" ? parseFloat(customScale) || scale : scale;
   const val = parseFloat(inputVal);
 
-  // Real→Desen: val(m) × 1000 → mm, ÷ scale → mm pe desen
+  // drawing_mm = real_cm × 10 / scale
-  // Desen→Real: val(mm) × scale → mm real, ÷ 1000 → m
+  // real_cm    = drawing_mm × scale / 10
   const result = !isNaN(val)
     ? mode === "real-to-drawing"
-      ? (val * 1000) / effectiveScale
+      ? (val * 10) / effectiveScale          // cm → mm on drawing
-      : (val * effectiveScale) / 1000
+      : (val * effectiveScale) / 10          // mm drawing → cm real
     : NaN;
 
-  const unitIn = mode === "real-to-drawing" ? "m (real)" : "mm (desen)";
+  const fmt2 = (n: number) =>
-
-  const fmtDesen = (n: number) =>
     isNaN(n)
       ? "—"
-      : n.toLocaleString("ro-RO", { minimumFractionDigits: 2, maximumFractionDigits: 2 }) + " mm";
+      : n.toLocaleString("ro-RO", { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-  const fmtReal = (n: number) =>
-    isNaN(n)
-      ? "—"
-      : n.toLocaleString("ro-RO", { minimumFractionDigits: 3, maximumFractionDigits: 3 }) + " m";
 
   return (
     <div className="space-y-4">
+      {/* Scale picker */}
       <div>
         <Label className="text-xs text-muted-foreground">Scară</Label>
         <div className="mt-1 flex flex-wrap items-center gap-2">
@@ -2595,6 +2600,8 @@ function ScaleCalculator() {
           </div>
         </div>
       </div>
+
+      {/* Mode */}
       <div className="flex gap-2">
         <Button
           variant={mode === "real-to-drawing" ? "default" : "outline"}
@@ -2611,49 +2618,71 @@ function ScaleCalculator() {
           Desen → Real
         </Button>
       </div>
+
+      {/* Input */}
       <div>
         <Label>
           {mode === "real-to-drawing"
-            ? "Dimensiune reală (m)"
+            ? "Dimensiune reală (cm)"
             : "Dimensiune desen (mm)"}
         </Label>
-        <div className="mt-1 flex gap-2">
+        <div className="mt-1 flex gap-2 items-center">
           <Input
             type="number"
+            min={0}
+            step={0.5}
             value={inputVal}
             onChange={(e) => setInputVal(e.target.value)}
-            placeholder={mode === "real-to-drawing" ? "ex: 5.4" : "ex: 54"}
+            placeholder={mode === "real-to-drawing" ? "ex: 350" : "ex: 35"}
             className="flex-1"
           />
-          <span className="flex items-center text-sm text-muted-foreground px-2">
+          <span className="text-sm text-muted-foreground shrink-0">
-            {unitIn}
+            {mode === "real-to-drawing" ? "cm" : "mm"}
           </span>
         </div>
       </div>
+
+      {/* Result */}
       {!isNaN(val) && val > 0 && (
         <div className="rounded-md border bg-muted/30 p-4 space-y-2 text-sm">
-          <p className="text-xs text-muted-foreground">
+          <p className="text-xs text-muted-foreground font-medium">
             Scară 1:{effectiveScale}
           </p>
-          <p className="text-base font-medium">
+          {mode === "real-to-drawing" ? (
-            {mode === "real-to-drawing" ? (
+            <>
-              <>
+              <p>
-                {val} m real →{" "}
+                Real: <strong>{fmt2(val)} cm</strong>{" "}
-                <strong className="text-primary">{fmtDesen(result)}</strong> pe desen
+                <span className="text-muted-foreground">
-                <CopyButton text={isNaN(result) ? "" : result.toFixed(2)} />
+                  ({fmt2(val / 100)} m)
-              </>
+                </span>
-            ) : (
+              </p>
-              <>
+              <p className="text-base border-t pt-2">
-                {val} mm desen →{" "}
+                Pe desen:{" "}
-                <strong className="text-primary">{fmtReal(result)}</strong> real
+                <strong className="text-primary">{fmt2(result)} mm</strong>
-                <CopyButton text={isNaN(result) ? "" : result.toFixed(3)} />
+                <CopyButton text={fmt2(result)} />
-              </>
+              </p>
-            )}
+              {!isNaN(result) && (
-          </p>
+                <p className="text-xs text-muted-foreground">
-          {mode === "real-to-drawing" && !isNaN(result) && (
+                  = {fmt2(result / 10)} cm pe desen
-            <p className="text-xs text-muted-foreground">
+                </p>
-              = {(result / 10).toFixed(2)} cm pe desen
+              )}
-            </p>
+            </>
+          ) : (
+            <>
+              <p>
+                Pe desen: <strong>{fmt2(val)} mm</strong>
+              </p>
+              <p className="text-base border-t pt-2">
+                Real:{" "}
+                <strong className="text-primary">{fmt2(result)} cm</strong>
+                <CopyButton text={fmt2(result)} />
+              </p>
+              {!isNaN(result) && (
+                <p className="text-xs text-muted-foreground">
+                  = {fmt2(result / 100)} m &nbsp;·&nbsp; {fmt2(result * 10)} mm
+                </p>
+              )}
+            </>
           )}
         </div>
       )}