Bug: Search ignores sort and category even though controls remain interactive

**File:** FRONTEND/src/pages/HomePage.jsx (lines 78-81, 128-148)

**Severity:** LOW

**Problem:** When searching, changing sort or category triggers a re-fetch, but the search API ignores both parameters. The controls misleadingly suggest they filter the search results, but they have no effect.

**Fix:** Either disable sort/category controls while searching, or pass them through to the search API.