Evidence-grounded search interface #3

Description

Users need to search across their documents and get answers that point back to the exact passage they came from, not just a plausible-sounding summary.

Proposed Solution

Build a search UI backed by the local index that returns results with inline citations/highlights linking back to source passages.

Acceptance Criteria

• Search UI is available from both web and desktop clients
• Every result links back to the exact source passage
• Search works fully offline against the local index
• Empty/no-result and loading states are handled