Validate Agent Work

The rules live in AGENTS.md and CONTRIBUTING.md; this is the order to check them in before handing work back.

Steps

1. See what changed — the branch against main, and whatever is not committed yet:

   git diff --name-only main...HEAD
   git status --short
   

   Stage nothing: every check below runs over the whole module, and the index is the user's to decide.

2. Run the gate:

   make check
   

   fmt runs first and rewrites files, so re-read one before editing it again.

3. Comment pass — the ## Comment pass in .claude/rules/comments.md, over the comments this change added or touched.

4. Read the diff against the mandatory rules in AGENTS.md — the language, commit, type, script and comment rules, and the "Working here" list. The linter checks none of them. Two need a search rather than a read: a field, method or constant added without a reader in the same change, and a probe whose finding has not reached docs/architecture/herdr-socket-api.md, which is the record — AGENTS.md takes it only if it misleads the code in silence.

5. Check nothing was left running:

   make ps
   

6. Before opening a pull request, write its body with the pr skill and check it against .github/pull_request_template.md: every section filled, no HTML comment left, no attribution line.

7. Fix and re-run — fix what a step found, then run that step again to confirm it. If a failure is not yours to fix, say so rather than working around it.

8. Report — always say what happened:

   • Clean: a brief confirmation.

   • Found and fixed, one line each:

     Validation found and fixed 3 issues:
     - golangci-lint: unused parameter in resolver.qualify
     - Comments: dropped a caller note in app/reads.go
     - Type rule: removed PaneInfo.Cols, which nothing read
     

   • Still broken: what is wrong and why you could not fix it.

make check is the whole gate on this machine, but CI also builds and tests on the Go floor go.mod names and on macOS — see CONTRIBUTING's "Pull requests". The user should never be surprised by a failure that could have been caught here.