Add theme support to user settings and related components

app/src/components/settings/account/AccountSettings.tsx

@@ -89,6 +89,7 @@ const AccountSettings: React.FC<AccountSettingsProps> = ({
         email: user.email,
         currentPassword: '',
         newPassword: '',
+        theme: user.theme,
       };
       dispatch({
         type: SettingsActionType.INIT_SETTINGS,
@@ -107,6 +108,13 @@ const AccountSettings: React.FC<AccountSettingsProps> = ({
     });
   };
 
+  const handleThemeChange = (theme: string): void => {
+    dispatch({
+      type: SettingsActionType.UPDATE_LOCAL_SETTINGS,
+      payload: { theme } as UserProfileSettings,
+    });
+  };
+
   const handleSubmit = async (): Promise<void> => {
     const updates: UserProfileSettings = {};
     const needsPasswordConfirmation =
@@ -117,6 +125,14 @@ const AccountSettings: React.FC<AccountSettingsProps> = ({
       updates.displayName = state.localSettings.displayName || '';
     }
 
+    // Add theme if changed
+    if (
+      state.localSettings.theme &&
+      state.localSettings.theme !== state.initialSettings.theme
+    ) {
+      updates.theme = state.localSettings.theme;
+    }
+
     // Handle password change
     if (state.localSettings.newPassword) {
       if (!state.localSettings.currentPassword) {
@@ -216,6 +232,7 @@ const AccountSettings: React.FC<AccountSettingsProps> = ({
                 <ProfileSettings
                   settings={state.localSettings}
                   onInputChange={handleInputChange}
+                  onThemeChange={handleThemeChange}
                 />
               </Accordion.Panel>
             </Accordion.Item>

app/src/components/settings/account/ProfileSettings.tsx

@@ -1,36 +1,70 @@
 import React from 'react';
-import { Box, Stack, TextInput } from '@mantine/core';
-import type { UserProfileSettings } from '@/types/models';
+import { Box, Stack, TextInput, Group, Text, Switch } from '@mantine/core';
+import { IconMoon, IconSun } from '@tabler/icons-react';
+import { useAuth } from '@/contexts/AuthContext';
+import { Theme, type UserProfileSettings } from '@/types/models';
 
 interface ProfileSettingsProps {
   settings: UserProfileSettings;
   onInputChange: (key: keyof UserProfileSettings, value: string) => void;
+  onThemeChange?: (theme: Theme) => void;
 }
 
 const ProfileSettings: React.FC<ProfileSettingsProps> = ({
   settings,
   onInputChange,
-}) => (
-  <Box>
-    <Stack gap="md">
-      <TextInput
-        label="Display Name"
-        type="text"
-        value={settings.displayName || ''}
-        onChange={(e) => onInputChange('displayName', e.currentTarget.value)}
-        placeholder="Enter display name"
-        data-testid="display-name-input"
-      />
-      <TextInput
-        label="Email"
-        type="email"
-        value={settings.email || ''}
-        onChange={(e) => onInputChange('email', e.currentTarget.value)}
-        placeholder="Enter email"
-        data-testid="email-input"
-      />
-    </Stack>
-  </Box>
-);
+  onThemeChange,
+}) => {
+  const { user } = useAuth();
+  const currentTheme = settings.theme || user?.theme || Theme.Dark;
+
+  const handleThemeToggle = () => {
+    const newTheme = currentTheme === Theme.Dark ? Theme.Light : Theme.Dark;
+    if (onThemeChange) {
+      onThemeChange(newTheme);
+    }
+  };
+
+  return (
+    <Box>
+      <Stack gap="md">
+        <TextInput
+          label="Display Name"
+          type="text"
+          value={settings.displayName || ''}
+          onChange={(e) => onInputChange('displayName', e.currentTarget.value)}
+          placeholder="Enter display name"
+          data-testid="display-name-input"
+        />
+        <TextInput
+          label="Email"
+          type="email"
+          value={settings.email || ''}
+          onChange={(e) => onInputChange('email', e.currentTarget.value)}
+          placeholder="Enter email"
+          data-testid="email-input"
+        />
+        <Group justify="space-between" align="flex-start">
+          <div>
+            <Text size="sm" fw={500}>
+              Default Theme
+            </Text>
+            <Text size="xs" c="dimmed">
+              Sets the default theme for new workspaces
+            </Text>
+          </div>
+          <Switch
+            checked={currentTheme === Theme.Dark}
+            onChange={handleThemeToggle}
+            size="lg"
+            onLabel={<IconMoon size={16} />}
+            offLabel={<IconSun size={16} />}
+            data-testid="theme-toggle"
+          />
+        </Group>
+      </Stack>
+    </Box>
+  );
+};
 
 export default ProfileSettings;

app/src/components/settings/admin/AdminDashboard.test.tsx

@@ -3,7 +3,7 @@ import { render as rtlRender, screen, fireEvent } from '@testing-library/react';
 import React from 'react';
 import { MantineProvider } from '@mantine/core';
 import AdminDashboard from './AdminDashboard';
-import { UserRole, type User } from '@/types/models';
+import { UserRole, Theme, type User } from '@/types/models';
 
 // Mock the auth context
 const mockCurrentUser: User = {
@@ -11,6 +11,7 @@ const mockCurrentUser: User = {
   email: 'admin@example.com',
   displayName: 'Admin User',
   role: UserRole.Admin,
+  theme: Theme.Dark,
   createdAt: '2024-01-01T00:00:00Z',
   lastWorkspaceId: 1,
 };

app/src/components/settings/admin/AdminUsersTab.test.tsx

@@ -8,7 +8,7 @@ import {
 import React from 'react';
 import { MantineProvider } from '@mantine/core';
 import AdminUsersTab from './AdminUsersTab';
-import { UserRole, type User } from '@/types/models';
+import { UserRole, Theme, type User } from '@/types/models';
 
 // Mock the user admin hook
 const mockCreate = vi.fn();
@@ -123,6 +123,7 @@ describe('AdminUsersTab', () => {
     email: 'admin@example.com',
     displayName: 'Admin User',
     role: UserRole.Admin,
+    theme: Theme.Dark,
     createdAt: '2024-01-01T00:00:00Z',
     lastWorkspaceId: 1,
   };
@@ -134,6 +135,7 @@ describe('AdminUsersTab', () => {
       email: 'editor@example.com',
       displayName: 'Editor User',
       role: UserRole.Editor,
+      theme: Theme.Dark,
       createdAt: '2024-01-15T00:00:00Z',
       lastWorkspaceId: 2,
     },
@@ -142,6 +144,7 @@ describe('AdminUsersTab', () => {
       email: 'viewer@example.com',
       displayName: 'Viewer User',
       role: UserRole.Viewer,
+      theme: Theme.Dark,
       createdAt: '2024-02-01T00:00:00Z',
       lastWorkspaceId: 3,
     },