Agent Skills: ticket-orient

Entry-point skill for the ticket-writing workflow. Runs the 7-step orient flow from spec §5: collects thoughts metadata, reads CONTEXT.md, performs tier-1 codebase orientation, detects the candidate primary tag from the user request, confirms scope with the user at a firm checkpoint, scaffolds the ticket bundle directory via scaffold-bundle.py, and hands off to ticket-grill for the Q↔R loop. Use as the first phase of every ticket-writing session before any grilling begins.