replace mock like function

[zigzagdev]

📝 TODOs for mock removal notes

• Add a TODO comment in lib/api/feed.ts to indicate the mock will be replaced with a real API call
  // TODO: Replace mockPosts with real API response once the backend is ready.

• Add a TODO comment in DashboardContainer.tsx near the fetchFeed() usage
  // TODO: Replace this call with real API logic once fetchFeed uses backend

• Add a TODO comment in mock/posts.ts above the mockPosts definition
  // TODO: Temporary mock data for post feed. To be removed once real API is integrated.

• Optionally, include an example of the expected real API implementation in feed.ts

  // TODO: Example future implementation
  // const response = await fetch('/api/feed');
  // if (!response.ok) throw new Error('Failed to fetch feed');
  // return await response.json();

• Review all temporary/mock-dependent imports to ensure they’re isolated and clearly replaceable