feat(admin): show storage policies

backend/src/test/java/com/yoyuzh/admin/AdminControllerIntegrationTest.java

@@ -320,11 +320,33 @@ class AdminControllerIntegrationTest {
                 .andExpect(jsonPath("$.code").value(0));
     }
 
+    @Test
+    @WithMockUser(username = "admin")
+    void shouldAllowConfiguredAdminToListStoragePolicies() throws Exception {
+        mockMvc.perform(get("/api/admin/storage-policies"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.code").value(0))
+                .andExpect(jsonPath("$.data.length()", greaterThanOrEqualTo(1)))
+                .andExpect(jsonPath("$.data[0].name").value("Default Local Storage"))
+                .andExpect(jsonPath("$.data[0].type").value("LOCAL"))
+                .andExpect(jsonPath("$.data[0].enabled").value(true))
+                .andExpect(jsonPath("$.data[0].defaultPolicy").value(true))
+                .andExpect(jsonPath("$.data[0].capabilities.directUpload").value(false))
+                .andExpect(jsonPath("$.data[0].capabilities.multipartUpload").value(false))
+                .andExpect(jsonPath("$.data[0].capabilities.serverProxyDownload").value(true))
+                .andExpect(jsonPath("$.data[0].capabilities.requiresCors").value(false))
+                .andExpect(jsonPath("$.data[0].maxSizeBytes").isNumber());
+    }
+
     @Test
     @WithMockUser(username = "portal-user")
     void shouldRejectNonAdminUser() throws Exception {
         mockMvc.perform(get("/api/admin/users?page=0&size=10"))
                 .andExpect(status().isForbidden())
                 .andExpect(jsonPath("$.msg").value("没有权限访问该资源"));
+
+        mockMvc.perform(get("/api/admin/storage-policies"))
+                .andExpect(status().isForbidden())
+                .andExpect(jsonPath("$.msg").value("没有权限访问该资源"));
     }
 }

backend/src/test/java/com/yoyuzh/admin/AdminServiceTest.java

@@ -12,6 +12,8 @@ import com.yoyuzh.files.FileBlobRepository;
 import com.yoyuzh.files.FileService;
 import com.yoyuzh.files.StoredFile;
 import com.yoyuzh.files.StoredFileRepository;
+import com.yoyuzh.files.StoragePolicyRepository;
+import com.yoyuzh.files.StoragePolicyService;
 import com.yoyuzh.transfer.OfflineTransferSessionRepository;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -56,6 +58,10 @@ class AdminServiceTest {
     private OfflineTransferSessionRepository offlineTransferSessionRepository;
     @Mock
     private AdminMetricsService adminMetricsService;
+    @Mock
+    private StoragePolicyRepository storagePolicyRepository;
+    @Mock
+    private StoragePolicyService storagePolicyService;
 
     private AdminService adminService;
 
@@ -64,7 +70,8 @@ class AdminServiceTest {
         adminService = new AdminService(
                 userRepository, storedFileRepository, fileBlobRepository, fileService,
                 passwordEncoder, refreshTokenService, registrationInviteService,
-                offlineTransferSessionRepository, adminMetricsService);
+                offlineTransferSessionRepository, adminMetricsService,
+                storagePolicyRepository, storagePolicyService);
     }
 
     // --- getSummary ---