- delete_linear_issue + delete_notion_page: add db_session.rollback()
in the KB document deletion exception handler so the session is never
left in a PendingRollbackError state after a failed commit, which
would otherwise break all subsequent DB operations in the same request
- delete_linear_issue: include issue identifier (e.g. ENG-42) in the
success message so the caller can confirm which issue was archived
- update_linear_issue: remove redundant label_ids ternary
(x if x is not None else None -> x)
- create_linear_issue: add logger.error on empty-title guard for parity
with the equivalent Notion tool
- update_issue: handle not_indexed KB sync status with a distinct user
message (matches Notion parity)
- delete_issue: fix log message "not found in DB" → "not found in KB"
