dlt/faultline/triage

Batch-groom the unresolved error queue.

1. Call list_error_groups with status: "unresolved" and the default limit. If the list is empty, say so and stop.
2. Render a numbered summary so the user has the lay of the land: id | exception_class | count | last_seen.
3. Walk the list one entry at a time. For each group:

a. Show: exception_class, message, file_path:line_number, occurrence_count, last_seen_at. b. Ask which of these to do: investigate / resolve / ignore / file-issue / skip / stop. c. Act on the user's choice:

• investigate — follow the faultline:debugging skill (get_occurrence for the latest), then return to the next group.
• resolve — call resolve_error_group (optionally prompt for a note).
• ignore — call ignore_error_group.
• file-issue — call create_github_issue.
• skip — move on without mutating.
• stop — exit the loop.

1. At the end, summarize what was done: counts of resolved/ignored/issues-filed/investigated/skipped.

If any mutating call returns "Tool disabled: mcp_readonly is true", stop the loop and tell the user to set c.mcp_readonly = false — there is no point continuing without mutation rights.