Standardize API response envelopes: use items for collection responses and update tests

frontend/src/components/__tests__/ConfigPageLogPath.test.tsx

@@ -107,7 +107,7 @@ vi.mock("../../api/config", () => ({
   createActionFile: vi.fn(),
   previewLog: vi.fn(),
   testRegex: vi.fn(),
-  fetchInactiveJails: vi.fn().mockResolvedValue({ jails: [], total: 0 }),
+  fetchInactiveJails: vi.fn().mockResolvedValue({ items: [], total: 0 }),
   activateJail: vi.fn(),
   deactivateJail: vi.fn(),
   fetchParsedFilter: vi.fn(),
@@ -139,7 +139,7 @@ vi.mock("../../api/config", () => ({
 }));
 
 vi.mock("../../api/jails", () => ({
-  fetchJails: vi.fn().mockResolvedValue({ jails: [], total: 0 }),
+  fetchJails: vi.fn().mockResolvedValue({ items: [], total: 0 }),
 }));
 
 /** Minimal jail fixture used across tests. */
@@ -185,7 +185,7 @@ async function openSshdAccordion(user: ReturnType<typeof userEvent.setup>) {
 describe("ConfigPage — Add Log Path", () => {
   beforeEach(() => {
     vi.clearAllMocks();
-    mockFetchJailConfigs.mockResolvedValue({ jails: [MOCK_JAIL], total: 1 });
+    mockFetchJailConfigs.mockResolvedValue({ items: [MOCK_JAIL], total: 1 });
     mockAddLogPath.mockResolvedValue(undefined);
   });
 

frontend/src/components/config/__tests__/AssignFilterDialog.test.tsx

@@ -36,7 +36,7 @@ const mockFetchJails = vi.mocked(fetchJails);
 // ---------------------------------------------------------------------------
 
 const mockJailsResponse: JailListResponse = {
-  jails: [
+  items: [
     {
       name: "sshd",
       enabled: true,

frontend/src/components/config/__tests__/JailsTab.test.tsx

@@ -12,7 +12,7 @@ vi.mock("../../../hooks/useAutoSave");
 vi.mock("../../../hooks/useJailConfigs");
 vi.mock("../../../hooks/useConfigActiveStatus");
 vi.mock("../../../api/config", () => ({
-  fetchInactiveJails: vi.fn().mockResolvedValue({ jails: [] }),
+  fetchInactiveJails: vi.fn().mockResolvedValue({ items: [] }),
   deactivateJail: vi.fn(),
   deleteJailLocalOverride: vi.fn(),
   addLogPath: vi.fn(),