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>

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
-  // Desen→Real: val(mm) × scale → mm real, ÷ 1000 → m
+  // drawing_mm = real_cm × 10 / scale
+  // real_cm    = drawing_mm × scale / 10
   const result = !isNaN(val)
     ? mode === "real-to-drawing"
-      ? (val * 1000) / effectiveScale
-      : (val * effectiveScale) / 1000
+      ? (val * 10) / effectiveScale          // cm → mm on drawing
+      : (val * effectiveScale) / 10          // mm drawing → cm real
     : NaN;
 
-  const unitIn = mode === "real-to-drawing" ? "m (real)" : "mm (desen)";
-
-  const fmtDesen = (n: number) =>
+  const fmt2 = (n: number) =>
     isNaN(n)
       ? "—"
-      : n.toLocaleString("ro-RO", { minimumFractionDigits: 2, maximumFractionDigits: 2 }) + " mm";
-  const fmtReal = (n: number) =>
-    isNaN(n)
-      ? "—"
-      : n.toLocaleString("ro-RO", { minimumFractionDigits: 3, maximumFractionDigits: 3 }) + " m";
+      : n.toLocaleString("ro-RO", { minimumFractionDigits: 2, maximumFractionDigits: 2 });
 
   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">
-            {unitIn}
+          <span className="text-sm text-muted-foreground shrink-0">
+            {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" ? (
-              <>
-                {val} m real →{" "}
-                <strong className="text-primary">{fmtDesen(result)}</strong> pe desen
-                <CopyButton text={isNaN(result) ? "" : result.toFixed(2)} />
-              </>
-            ) : (
-              <>
-                {val} mm desen →{" "}
-                <strong className="text-primary">{fmtReal(result)}</strong> real
-                <CopyButton text={isNaN(result) ? "" : result.toFixed(3)} />
-              </>
-            )}
-          </p>
-          {mode === "real-to-drawing" && !isNaN(result) && (
-            <p className="text-xs text-muted-foreground">
-              = {(result / 10).toFixed(2)} cm pe desen
-            </p>
+          {mode === "real-to-drawing" ? (
+            <>
+              <p>
+                Real: <strong>{fmt2(val)} cm</strong>{" "}
+                <span className="text-muted-foreground">
+                  ({fmt2(val / 100)} m)
+                </span>
+              </p>
+              <p className="text-base border-t pt-2">
+                Pe desen:{" "}
+                <strong className="text-primary">{fmt2(result)} mm</strong>
+                <CopyButton text={fmt2(result)} />
+              </p>
+              {!isNaN(result) && (
+                <p className="text-xs text-muted-foreground">
+                  = {fmt2(result / 10)} 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>
       )}