Close Loop

Analyzes what was built, captures decisions and architecture changes, pulls in the Step 7 gate evidence and the Step 8 PR review outcome, saves it all to a markdown document, and closes the tracker item referencing that evidence. This is Step 9, the final checkpoint: Pick up source → Brainstorm → SPEC.md → Slices → Review → Branch → Execute → Verify → PR + bot → Close loop

Prerequisites:

1. gsdl-verify-gates (Step 7) completed with all gates passing. If .planning/[project-name]/verify-report.md doesn't exist, or shows a failing gate, stop and tell the user to run/fix verification first — closing the loop without evidence defeats the point of the checkpoint.
2. gsdl-open-pr (Step 8) opened the PR and dispositioned any review-bot findings — unless Forge → provider: none, in which case there is no PR and the document says so. If a forge is configured but no PR exists, say so and ask whether to run Step 8 first: moving the parent item to review is meaningless without something to review.

Tier