pre-launch hardening: Address Book type sort, Hot Desk proportions, TVA calculator, ROADMAP Phase 4B

- Address Book: type dropdown always sorted alphabetically (ro locale), including custom types
- Hot Desk: window ~half height (top-[35%] bottom-[35%]), door ~double height (h-16)
- Mini Utilities: TVA calculator (19%) with add/extract modes, RON formatting, copy buttons
- ROADMAP: new Phase 4B Pre-Launch Hardening with 10 structured tasks
- CLAUDE.md: bumped versions (Address Book 0.1.1, Mini Utilities 0.1.1, Hot Desk 0.1.1), Visual Copilot separate repo note

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

@@ -16,6 +16,7 @@ import {
   CaseUpper,
   Palette,
   Upload,
+  Receipt,
 } from "lucide-react";
 import { Button } from "@/shared/components/ui/button";
 import { Input } from "@/shared/components/ui/input";
@@ -206,6 +207,103 @@ function PercentageCalculator() {
   );
 }
 
+function TvaCalculator() {
+  const TVA_RATE = 19; // Romania standard VAT
+  const [amount, setAmount] = useState("");
+  const [mode, setMode] = useState<"add" | "extract">("add");
+
+  const val = parseFloat(amount);
+  const tvaMultiplier = TVA_RATE / 100;
+
+  const cuTva = !isNaN(val) && mode === "add" ? val * (1 + tvaMultiplier) : NaN;
+  const faraTva =
+    !isNaN(val) && mode === "extract" ? val / (1 + tvaMultiplier) : NaN;
+  const tvaAmount = !isNaN(val)
+    ? mode === "add"
+      ? val * tvaMultiplier
+      : val - val / (1 + tvaMultiplier)
+    : NaN;
+
+  const fmt = (n: number) =>
+    isNaN(n)
+      ? "—"
+      : n.toLocaleString("ro-RO", {
+          minimumFractionDigits: 2,
+          maximumFractionDigits: 2,
+        });
+
+  return (
+    <div className="space-y-4">
+      <div className="flex gap-2">
+        <Button
+          variant={mode === "add" ? "default" : "outline"}
+          size="sm"
+          onClick={() => setMode("add")}
+        >
+          Adaugă TVA
+        </Button>
+        <Button
+          variant={mode === "extract" ? "default" : "outline"}
+          size="sm"
+          onClick={() => setMode("extract")}
+        >
+          Extrage TVA
+        </Button>
+      </div>
+      <div>
+        <Label>{mode === "add" ? "Sumă fără TVA" : "Sumă cu TVA"}</Label>
+        <div className="mt-1 flex gap-2">
+          <Input
+            type="number"
+            value={amount}
+            onChange={(e) => setAmount(e.target.value)}
+            placeholder={mode === "add" ? "Ex: 1000" : "Ex: 1190"}
+            className="flex-1"
+          />
+          <span className="flex items-center text-sm text-muted-foreground">
+            RON
+          </span>
+        </div>
+      </div>
+      {!isNaN(val) && val > 0 && (
+        <div className="rounded-md border bg-muted/30 p-4 space-y-2 text-sm">
+          {mode === "add" ? (
+            <>
+              <p>
+                Sumă fără TVA: <strong>{fmt(val)} RON</strong>
+              </p>
+              <p>
+                TVA ({TVA_RATE}%): <strong>{fmt(tvaAmount)} RON</strong>
+                <CopyButton text={fmt(tvaAmount)} />
+              </p>
+              <p className="text-base pt-1 border-t">
+                Total cu TVA:{" "}
+                <strong className="text-primary">{fmt(cuTva)} RON</strong>
+                <CopyButton text={fmt(cuTva)} />
+              </p>
+            </>
+          ) : (
+            <>
+              <p>
+                Sumă cu TVA: <strong>{fmt(val)} RON</strong>
+              </p>
+              <p>
+                TVA ({TVA_RATE}%): <strong>{fmt(tvaAmount)} RON</strong>
+                <CopyButton text={fmt(tvaAmount)} />
+              </p>
+              <p className="text-base pt-1 border-t">
+                Sumă fără TVA:{" "}
+                <strong className="text-primary">{fmt(faraTva)} RON</strong>
+                <CopyButton text={fmt(faraTva)} />
+              </p>
+            </>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
+
 function AreaConverter() {
   const units = [
     { key: "mp", label: "mp (m²)", factor: 1 },
@@ -1207,6 +1305,9 @@ export function MiniUtilitiesModule() {
         <TabsTrigger value="percentage">
           <Percent className="mr-1 h-3.5 w-3.5" /> Procente
         </TabsTrigger>
+        <TabsTrigger value="tva">
+          <Receipt className="mr-1 h-3.5 w-3.5" /> TVA
+        </TabsTrigger>
         <TabsTrigger value="area">
           <Ruler className="mr-1 h-3.5 w-3.5" /> Suprafețe
         </TabsTrigger>
@@ -1263,6 +1364,16 @@ export function MiniUtilitiesModule() {
           </CardContent>
         </Card>
       </TabsContent>
+      <TabsContent value="tva">
+        <Card>
+          <CardHeader>
+            <CardTitle className="text-base">Calculator TVA (19%)</CardTitle>
+          </CardHeader>
+          <CardContent>
+            <TvaCalculator />
+          </CardContent>
+        </Card>
+      </TabsContent>
       <TabsContent value="area">
         <Card>
           <CardHeader>