Previously, search results were sorted solely by candidate_id
(preserving original order from the database), which could result in
less relevant matches appearing before better ones.

This change sorts results primarily by fuzzy match score (descending),
with candidate_id as a tiebreaker for equal scores. This ensures that
better matches appear first while preserving recency order among items
with identical scores.

Example improvement:
- Searching for 'pica' will now rank 'picabo' higher than scattered
matches like 'project-api, project-chat'
- Consecutive character matches are prioritized over scattered matches
across multiple path segments

Release Notes:
- Improved project search relevance by ranking results using match score
instead of insertion order.