CLIENT: Dashboard - Student View - Search bar

[RoderickLei]

Problem Description

As a user, I want to search so I can quickly find relevant posts.

Required Changes

• Implement search input at top of dashboard.
• Filter posts by text match.

Goal

Allow users to search for a post in the feed.

Acceptance Criteria

• Typing a query filters visible posts.
• Clearing query restores full feed.
• Empty state shown if no posts match.

Dependencies

Backend: none

[jonavano]

I think the search bar is a different epic, so for the dashboard it can be non funcional for now