Enhances list_unreconciled_via_fusion to include fusion fields
(top_suggestion_id, confidence_band, attachment_count). Adds 3 new
adapter methods that proxy the engine: suggest_matches, accept_suggestion,
unreconcile. AI tools (Task 22+) and OWL controller (Task 26) will call
these adapter methods instead of touching the engine directly.
Made-with: Cursor
