refactor: remove AI profile functionality and related components

- Deleted the AI profile management feature, including all associated views, hooks, and types.
- Updated settings and navigation components to remove references to AI profiles.
- Adjusted local storage and settings synchronization logic to reflect the removal of AI profiles.
- Cleaned up tests and utility functions that were dependent on the AI profile feature.

These changes streamline the application by eliminating unused functionality, improving maintainability and reducing complexity.

apps/ui/tests/profiles/profiles-crud.spec.ts

@@ -1,59 +0,0 @@
-/**
- * AI Profiles E2E Test
- *
- * Happy path: Create a new profile
- */
-
-import { test, expect } from '@playwright/test';
-import {
-  setupMockProjectWithProfiles,
-  waitForNetworkIdle,
-  navigateToProfiles,
-  clickNewProfileButton,
-  fillProfileForm,
-  saveProfile,
-  waitForSuccessToast,
-  countCustomProfiles,
-  authenticateForTests,
-  handleLoginScreenIfPresent,
-} from '../utils';
-
-test.describe('AI Profiles', () => {
-  test('should create a new profile', async ({ page }) => {
-    await setupMockProjectWithProfiles(page, { customProfilesCount: 0 });
-    await authenticateForTests(page);
-    await page.goto('/');
-    await page.waitForLoadState('load');
-    await handleLoginScreenIfPresent(page);
-    await waitForNetworkIdle(page);
-    await navigateToProfiles(page);
-
-    // Get initial custom profile count (may be 0 or more due to server settings hydration)
-    const initialCount = await countCustomProfiles(page);
-
-    await clickNewProfileButton(page);
-
-    await fillProfileForm(page, {
-      name: 'Test Profile',
-      description: 'A test profile',
-      icon: 'Brain',
-      model: 'sonnet',
-      thinkingLevel: 'medium',
-    });
-
-    await saveProfile(page);
-
-    await waitForSuccessToast(page, 'Profile created');
-
-    // Wait for the new profile to appear in the list (replaces arbitrary timeout)
-    // The count should increase by 1 from the initial count
-    await expect(async () => {
-      const customCount = await countCustomProfiles(page);
-      expect(customCount).toBe(initialCount + 1);
-    }).toPass({ timeout: 5000 });
-
-    // Verify the count is correct (final assertion)
-    const finalCount = await countCustomProfiles(page);
-    expect(finalCount).toBe(initialCount + 1);
-  });
-});