fix(admin): reauthenticate model discovery

frontend/tests/admin-model-management-ui-contract.test.ts

@@ -19,8 +19,10 @@ test("provider form keeps codes server-owned and API keys write-only", () => {
 });
 
 test("model discovery stays searchable with a manual provider model fallback", () => {
+  assert.match(component, /onClick=\{\(\) => setDiscoverProviderId\(selectedProviderId\)\}>获取模型列表<\/Button>/);
+  assert.match(component, /title="获取供应商模型列表"[\s\S]*reauthPermission="models\.test"[\s\S]*onSubmit=\{discoverModels\}/);
   assert.match(component, /adminRequestJson<DiscoveredModelsPayload>\("\/api\/admin\/models\/discover"/);
-  assert.match(component, /body: JSON\.stringify\(\{ providerId: selectedProviderId \}\)/);
+  assert.match(component, /body: JSON\.stringify\(\{ providerId: discoverProviderId \}\)/);
   assert.match(component, /获取模型列表/);
   assert.match(component, /<Select[\s\S]*showSearch[\s\S]*optionFilterProp="label"[\s\S]*onSelect=\{selectDiscoveredModel\}/);
   assert.match(component, /name="providerModel" label="供应商模型名（可手工输入）"/);