feat(05-03): add OffersTab component + Offerte tab in project workspace

- Create OffersTab.tsx client component with assign form and offer list
- Inline accepted_total editing via onBlur handler
- Add Offerte tab trigger and content to project workspace page
- Destructure projectOffers and availableMicros from getProjectFullDetail result

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

@@ -8,6 +8,7 @@ import { DocumentsTab } from "@/components/admin/tabs/DocumentsTab";
 import { CommentsTab } from "@/components/admin/tabs/CommentsTab";
 import { QuoteTab } from "@/components/admin/tabs/QuoteTab";
 import { TimerTab } from "@/components/admin/tabs/TimerTab";
+import { OffersTab } from "@/components/admin/tabs/OffersTab";
 import { PhasesViewToggle } from "@/components/admin/kanban/PhasesViewToggle";
 import Link from "next/link";
 
@@ -38,6 +39,8 @@ export default async function ProjectDetailPage({
     activeTimerEntryId,
     activeTimerStartedAt,
     totalTrackedSeconds,
+    projectOffers,
+    availableMicros,
   } = detail;
 
   return (
@@ -71,6 +74,7 @@ export default async function ProjectDetailPage({
           <TabsTrigger value="comments">Commenti</TabsTrigger>
           <TabsTrigger value="quote">Preventivo</TabsTrigger>
           <TabsTrigger value="timer">Timer</TabsTrigger>
+          <TabsTrigger value="offers">Offerte</TabsTrigger>
         </TabsList>
 
         <TabsContent value="phases">
@@ -133,6 +137,14 @@ export default async function ProjectDetailPage({
             targetHourlyRate={targetHourlyRate}
           />
         </TabsContent>
+
+        <TabsContent value="offers">
+          <OffersTab
+            projectId={id}
+            projectOffers={projectOffers}
+            availableMicros={availableMicros}
+          />
+        </TabsContent>
       </Tabs>
     </div>
   );