Spec Kit Agent Context Update
Read AGENTS.md, .specify/extensions.yml, .specify/feature.json, and the
current feature artifacts.
Do
- Update only the block between configured Spec Kit markers.
- Preserve all host-owned text outside the markers.
- Summarize active feature directory, spec/plan/tasks status, and required validation.
- If markers are missing, create a small proposed block or report the exact missing marker instead of rewriting the whole file.
Done
- Agent context points at current artifacts.
- No unrelated guidance changed.