feat(03-03): QuoteTab component + Preventivo tab in client detail page

- Create QuoteTab.tsx: catalog dropdown + freeform toggle + items table + accepted total editor
- Wire QuoteTab as 5th tab (Preventivo) in /admin/clients/[id]/page.tsx
- Destructure quoteItems + activeServices from getClientFullDetail result
- TypeScript clean, build passes

src/app/admin/clients/[id]/page.tsx

@@ -5,6 +5,7 @@ import { PhasesTab } from "@/components/admin/tabs/PhasesTab";
 import { PaymentsTab } from "@/components/admin/tabs/PaymentsTab";
 import { DocumentsTab } from "@/components/admin/tabs/DocumentsTab";
 import { CommentsTab } from "@/components/admin/tabs/CommentsTab";
+import { QuoteTab } from "@/components/admin/tabs/QuoteTab";
 import { PhasesViewToggle } from "@/components/admin/kanban/PhasesViewToggle";
 import { ClientActions } from "@/components/admin/ClientActions";
 import Link from "next/link";
@@ -20,7 +21,7 @@ export default async function ClientDetailPage({
   const detail = await getClientFullDetail(id);
   if (!detail) notFound();
 
-  const { client, phases, payments, documents, comments } = detail;
+  const { client, phases, payments, documents, comments, quoteItems, activeServices } = detail;
 
   return (
     <div>
@@ -59,6 +60,7 @@ export default async function ClientDetailPage({
           <TabsTrigger value="payments">Pagamenti</TabsTrigger>
           <TabsTrigger value="documents">Documenti</TabsTrigger>
           <TabsTrigger value="comments">Commenti</TabsTrigger>
+          <TabsTrigger value="quote">Preventivo</TabsTrigger>
         </TabsList>
 
         <TabsContent value="phases">
@@ -81,6 +83,14 @@ export default async function ClientDetailPage({
         <TabsContent value="comments">
           <CommentsTab comments={comments} phases={phases} clientId={client.id} />
         </TabsContent>
+        <TabsContent value="quote">
+          <QuoteTab
+            clientId={client.id}
+            items={quoteItems}
+            activeServices={activeServices}
+            acceptedTotal={client.accepted_total ?? "0"}
+          />
+        </TabsContent>
       </Tabs>
     </div>
   );