ci(contribution): block AI-attribution footers in PR body

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,6 +2,11 @@
 Thanks for contributing to GenieClaw! Please fill this template in honestly.
 The "Real Behavior Proof" section is required and enforced by CI.
 See CONTRIBUTING.md for the full rules.
+
+NOTE: Strip any AI-attribution footer (e.g. "🤖 Generated with Claude Code")
+from your PR body before submitting. Using AI tooling to draft the PR is
+fine; attribution in the PR body and in git history stays with the human
+contributor. CI enforces this.
 -->
 
 ## Summary

.github/workflows/contribution.yml

@@ -40,6 +40,16 @@ jobs:
               exit 1
           fi
 
+          # Block AI-attribution footers in PR body. Using Claude Code (or any
+          # other AI agent) to help draft the PR is fine — but `git log`,
+          # `git shortlog`, and the PR description record attribution to the
+          # human contributor, not the tool. Strip the trailer before
+          # submitting. See CONTRIBUTING.md "Commit hygiene".
+          if printf '%s' "$PR_BODY" | grep -Eqi 'Generated[[:space:]]+with[[:space:]]+\[?Claude[[:space:]]+Code\]?'; then
+              echo "::error::PR body contains an AI-attribution footer (e.g. '🤖 Generated with Claude Code'). Strip it before submitting — see CONTRIBUTING.md 'Commit hygiene'."
+              exit 1
+          fi
+
           # Allow Dependabot / Renovate / release automation to skip the
           # human-written proof requirement. These are bot PRs whose
           # contents are mechanically generated.

CHANGELOG.md

@@ -10,7 +10,11 @@
   `Contribution / PR body checklist` CI job (triggered via
   `pull_request_target` so the check runs from the base branch's
   workflow definition — fires on every PR regardless of whether the
-  PR head pre-dates the workflow). Quality / engineering /
+  PR head pre-dates the workflow). Checklist also blocks PR bodies
+  that include AI-attribution footers like `🤖 Generated with Claude
+  Code` (case-insensitive, matches the bracketed-link form as well)
+  to keep PR attribution with the human contributor; same spirit as
+  the existing no-`Co-Authored-By: Claude` commit-trailer rule. Quality / engineering /
   bug-fix contributions are explicitly welcomed; every PR must include
   a `## Real Behavior Proof` section in the body (CI enforces structure,
   reviewer reads the content) so reviewers can see what was actually

CONTRIBUTING.md

@@ -93,6 +93,7 @@ All checks must be green before merge. We squash-merge PRs, with the maintainer
 - Write commit subjects in the imperative mood, scoped if useful: `fix(voice/stt): per-call nonce on transcribe_pcm tempfile`.
 - Keep commit bodies useful — explain *why*, not *what*. The diff already shows what changed.
 - Do **not** add `Co-Authored-By: Claude` / Copilot / other AI-assistant trailers to commit messages. Tools to draft code are fine; we keep `git log` attribution to the human contributor so credit is unambiguous.
+- Do **not** include AI-generated attribution footers like `🤖 Generated with Claude Code` (or any variant) in **PR bodies** either. Enforced by the `Contribution / PR body checklist` CI job. Same reason as the commit-trailer rule: attribution stays with the human contributor.
 - Don't `--no-verify` past pre-commit hooks. Fix the underlying issue.
 
 ## Security disclosures