[CLAUDE] FE-User: fix ProposalCreatePage workflow dropdown shape (latent S37 bug)

Follow-up cho bug flagged trong 75df04e. ProposalCreatePage (fe-admin + fe-user)
fetch /approval-workflows-v2 expect flat array, nhưng endpoint trả AwAdminOverviewDto
{types:[{applicableType, history:[...]}]} → workflows.data.map chạy .map trên object
→ TypeError/dropdown rỗng. Latent vì create-with-workflow chưa exercise UAT.

Fix: mirror pattern proven của ContractCreatePage + WorkflowAppDetailPage —
res.data.types.find(t=>t.applicableType===4)?.history.filter(isUserSelectable).
WorkflowDto +isUserSelectable. Render .map giữ nguyên (data giờ là array đúng).

Verify: tsc -b + vite build ×2 PASS (exit 0) · fe-admin/fe-user SHA256 identical
(91565D47...7697C771).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

fe-user/src/pages/office/ProposalCreatePage.tsx

@@ -25,6 +25,7 @@ interface WorkflowDto {
   id: string
   code: string
   name: string
+  isUserSelectable: boolean
 }
 
 function parseVnd(s: string): number {
@@ -48,12 +49,19 @@ export function ProposalCreatePage() {
     queryFn: async () => (await api.get<DepartmentDto[]>('/departments')).data,
   })
 
+  // Endpoint trả AwAdminOverviewDto { types: [{ applicableType, history: [...] }] } —
+  // KHÔNG phải flat array. Mirror ContractCreatePage/WorkflowAppDetail: extract bucket
+  // theo applicableType=4 (Đề xuất) rồi filter isUserSelectable (admin ghim cho user pick).
   const workflows = useQuery({
     queryKey: ['approval-workflows-v2', { applicableType: 4, isUserSelectable: true }],
-    queryFn: async () =>
-      (await api.get<WorkflowDto[]>('/approval-workflows-v2', {
-        params: { applicableType: 4, isUserSelectable: true },
-      })).data,
+    queryFn: async () => {
+      const res = await api.get<{ types: { applicableType: number; history: WorkflowDto[] }[] }>(
+        '/approval-workflows-v2',
+        { params: { applicableType: 4 } },
+      )
+      const bucket = res.data.types.find((t) => t.applicableType === 4)
+      return (bucket?.history ?? []).filter((w) => w.isUserSelectable)
+    },
   })
 
   const create = useMutation({