diff --git a/frontend/app/dashboard/__tests__/page.test.tsx b/frontend/app/dashboard/__tests__/page.test.tsx
index 63b63f2..446d6e7 100644
--- a/frontend/app/dashboard/__tests__/page.test.tsx
+++ b/frontend/app/dashboard/__tests__/page.test.tsx
@@ -46,18 +46,29 @@ const mockUseDashboard = useDashboard as jest.MockedFunction<typeof useDashboard
 
 describe('Dashboard Page', () => {
   const defaultDashboardState = {
+    // Authentication
+    isAuthenticated: true,
+    authLoading: false,
+    handleLogout: jest.fn(),
+
+    // Container list
     containers: [],
     isRefreshing: false,
-    error: null,
+    isLoading: false,
+    error: '',
     refreshContainers: jest.fn(),
+
+    // Terminal modal
     selectedContainer: null,
     isTerminalOpen: false,
     openTerminal: jest.fn(),
     closeTerminal: jest.fn(),
+
+    // UI state
     isMobile: false,
     isInitialLoading: false,
+    hasContainers: false,
     showEmptyState: false,
-    handleLogout: jest.fn(),
   };
 
   beforeEach(() => {
diff --git a/frontend/jest.d.ts b/frontend/jest.d.ts
new file mode 100644
index 0000000..e48dee9
--- /dev/null
+++ b/frontend/jest.d.ts
@@ -0,0 +1 @@
+/// <reference types="@testing-library/jest-dom" />
diff --git a/frontend/lib/hooks/__tests__/useInteractiveTerminal.test.tsx b/frontend/lib/hooks/__tests__/useInteractiveTerminal.test.tsx
index 09e669a..0be07d0 100644
--- a/frontend/lib/hooks/__tests__/useInteractiveTerminal.test.tsx
+++ b/frontend/lib/hooks/__tests__/useInteractiveTerminal.test.tsx
@@ -1,6 +1,14 @@
 import { renderHook, act } from '@testing-library/react';
 import { useInteractiveTerminal } from '../useInteractiveTerminal';
 
+type UseInteractiveTerminalProps = {
+  open: boolean;
+  containerId: string;
+  containerName: string;
+  isMobile: boolean;
+  onFallback: (reason: string) => void;
+};
+
 // Suppress console output during tests (terminal initialization logs)
 const originalConsoleLog = console.log;
 const originalConsoleWarn = console.warn;
@@ -113,7 +121,7 @@ describe('useInteractiveTerminal', () => {
       const mockDiv = document.createElement('div');
 
       const { rerender } = renderHook(
-        (props) => {
+        (props: UseInteractiveTerminalProps) => {
           const hook = useInteractiveTerminal(props);
           // Simulate ref being available
           if (hook.terminalRef.current === null) {
diff --git a/frontend/lib/store/__tests__/authSlice.test.ts b/frontend/lib/store/__tests__/authSlice.test.ts
index e2743c5..37ad427 100644
--- a/frontend/lib/store/__tests__/authSlice.test.ts
+++ b/frontend/lib/store/__tests__/authSlice.test.ts
@@ -11,14 +11,17 @@ import * as apiClient from '@/lib/api';
 jest.mock('@/lib/api');
 
 describe('authSlice', () => {
-  let store: ReturnType<typeof configureStore>;
+  type TestStore = ReturnType<typeof createTestStore>;
+  let store: TestStore;
+
+  const createTestStore = () => configureStore({
+    reducer: {
+      auth: authReducer,
+    },
+  });
 
   beforeEach(() => {
-    store = configureStore({
-      reducer: {
-        auth: authReducer,
-      },
-    });
+    store = createTestStore();
     jest.clearAllMocks();
     localStorage.clear();
   });
diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
index 3a13f90..3540c1b 100644
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -24,6 +24,7 @@
   },
   "include": [
     "next-env.d.ts",
+    "jest.d.ts",
     "**/*.ts",
     "**/*.tsx",
     ".next/types/**/*.ts",