docs: add GitHub activity helper to maintainer skill

.agents/skills/openclaw-pr-maintainer/SKILL.md

@@ -29,8 +29,18 @@ gitcrawl cluster-detail openclaw/openclaw --id <cluster-id> --member-limit 20 --
 - For every reviewed, triaged, closed, or landed issue/PR, show the opener's human name when available, GitHub login, and account age.
 - Get the login from `gh issue view` / `gh pr view` (`author.login`), then fetch profile metadata once with `gh api users/<login> --jq '{login,name,created_at,type}'`.
 - Report account age as created date plus rough age, for example `Opened by Jane Doe (@jane, account created 2021-04-03, ~5y old)`.
+- Also show recent GitHub activity when it informs maintainer risk: OpenClaw PRs, issues, and commits in the last 12 months; for linked issue-fixing PRs, include both the PR author and issue opener when they differ.
+- Prefer the bundled helper for activity lookups:
+
+```bash
+.agents/skills/openclaw-pr-maintainer/scripts/github-activity.sh <login> [other-login...]
+.agents/skills/openclaw-pr-maintainer/scripts/github-activity.sh --global <login>
+```
+
+- The helper reports repo-local activity first and can fetch public GitHub contribution totals for the same window with `--global`.
+- Report activity compactly, for example `OpenClaw last 12mo: 4 PRs, 2 issues, 11 commits; GitHub public last 12mo: 86 commits, 9 PRs, 3 issues, 12 reviews`.
 - If `name` is empty, use the login only. If profile lookup is rate-limited or unavailable, say `account age unknown` rather than omitting the opener.
-- Use this as triage signal, not proof by itself: new or bot-like accounts can raise review caution, but code, repro, and CI evidence still decide.
+- Use identity and activity as triage signal, not proof by itself: new, low-activity, or bot-like accounts can raise review caution, but code, repro, and CI evidence still decide.
 
 ## Apply close and triage labels correctly
 

.agents/skills/openclaw-pr-maintainer/scripts/github-activity.sh

@@ -0,0 +1,180 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo="openclaw/openclaw"
+months="12"
+include_global="0"
+
+usage() {
+  printf 'Usage: %s [--repo owner/repo] [--months N] [--global] <github-login> [login...]\n' "$0"
+}
+
+die() {
+  printf 'error: %s\n' "$*" >&2
+  exit 1
+}
+
+need() {
+  command -v "$1" >/dev/null 2>&1 || die "missing required command: $1"
+}
+
+date_utc_relative_months() {
+  local count="$1"
+  if date -u -v-"${count}"m +%Y-%m-%dT%H:%M:%SZ >/dev/null 2>&1; then
+    date -u -v-"${count}"m +%Y-%m-%dT%H:%M:%SZ
+    return
+  fi
+  date -u -d "${count} months ago" +%Y-%m-%dT%H:%M:%SZ
+}
+
+date_to_epoch() {
+  local value="$1"
+  if date -u -j -f '%Y-%m-%dT%H:%M:%SZ' "$value" +%s >/dev/null 2>&1; then
+    date -u -j -f '%Y-%m-%dT%H:%M:%SZ' "$value" +%s
+    return
+  fi
+  date -u -d "$value" +%s
+}
+
+rough_age() {
+  local created_at="$1"
+  local now_s created_s days
+  now_s=$(date -u +%s)
+  created_s=$(date_to_epoch "$created_at")
+  days=$(( (now_s - created_s) / 86400 ))
+  if (( days < 120 )); then
+    printf '~%dd old' "$days"
+    return
+  fi
+  awk -v days="$days" 'BEGIN { printf "~%.1fy old", days / 365.2425 }'
+}
+
+count_threads() {
+  local kind="$1"
+  local login="$2"
+  local since_ts="$3"
+  local kind_filter
+  if [[ "$kind" == "prs" ]]; then
+    kind_filter='has("pull_request")'
+  else
+    kind_filter='has("pull_request") | not'
+  fi
+  gh api --paginate "repos/${repo}/issues?state=all&creator=${login}&since=${since_ts}&per_page=100" \
+    --jq ".[] | select(.created_at >= \"${since_ts}\") | select(${kind_filter}) | .number" |
+    wc -l |
+    tr -d '[:space:]'
+}
+
+count_commits() {
+  local login="$1"
+  local since_ts="$2"
+  gh api --paginate "repos/${repo}/commits?author=${login}&since=${since_ts}&per_page=100" \
+    --jq '.[].sha' | wc -l | tr -d '[:space:]'
+}
+
+global_activity() {
+  local login="$1"
+  local since_ts="$2"
+  local now_ts="$3"
+  # shellcheck disable=SC2016
+  gh api graphql \
+    -f login="$login" \
+    -f from="$since_ts" \
+    -f to="$now_ts" \
+    -f query='
+query($login: String!, $from: DateTime!, $to: DateTime!) {
+  user(login: $login) {
+    contributionsCollection(from: $from, to: $to) {
+      totalCommitContributions
+      totalIssueContributions
+      totalPullRequestContributions
+      totalPullRequestReviewContributions
+    }
+  }
+}' \
+    --jq '.data.user.contributionsCollection // empty'
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --repo)
+      [[ $# -ge 2 ]] || die "--repo requires owner/repo"
+      repo="$2"
+      shift 2
+      ;;
+    --months)
+      [[ $# -ge 2 ]] || die "--months requires a positive integer"
+      months="$2"
+      [[ "$months" =~ ^[0-9]+$ && "$months" != "0" ]] || die "--months must be a positive integer"
+      shift 2
+      ;;
+    --global)
+      include_global="1"
+      shift
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      die "unknown option: $1"
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+[[ $# -gt 0 ]] || {
+  usage >&2
+  exit 2
+}
+
+need gh
+need jq
+
+since_ts=$(date_utc_relative_months "$months")
+now_ts=$(date -u +%Y-%m-%dT%H:%M:%SZ)
+
+for login in "$@"; do
+  profile=$(gh api "users/${login}" --jq '{login,name,created_at,type}')
+  display_login=$(jq -r '.login' <<<"$profile")
+  name=$(jq -r '.name // empty' <<<"$profile")
+  created_at=$(jq -r '.created_at' <<<"$profile")
+  type=$(jq -r '.type' <<<"$profile")
+  created_day=${created_at%%T*}
+
+  prs=$(count_threads prs "$display_login" "$since_ts")
+  issues=$(count_threads issues "$display_login" "$since_ts")
+  commits=$(count_commits "$display_login" "$since_ts")
+
+  if [[ -n "$name" ]]; then
+    printf '%s (@%s, %s, account created %s, %s)\n' \
+      "$name" "$display_login" "$type" "$created_day" "$(rough_age "$created_at")"
+  else
+    printf '@%s (%s, account created %s, %s)\n' \
+      "$display_login" "$type" "$created_day" "$(rough_age "$created_at")"
+  fi
+  printf '%s last %smo: %s PRs, %s issues, %s commits\n' "$repo" "$months" "$prs" "$issues" "$commits"
+
+  if [[ "$include_global" == "1" ]]; then
+    if global_json=$(global_activity "$display_login" "$since_ts" "$now_ts" 2>/dev/null); then
+      if [[ -n "$global_json" ]]; then
+        global_commits=$(jq -r '.totalCommitContributions' <<<"$global_json")
+        global_issues=$(jq -r '.totalIssueContributions' <<<"$global_json")
+        global_prs=$(jq -r '.totalPullRequestContributions' <<<"$global_json")
+        global_reviews=$(jq -r '.totalPullRequestReviewContributions' <<<"$global_json")
+        printf 'GitHub public last %smo: %s commits, %s PRs, %s issues, %s reviews\n' \
+          "$months" "$global_commits" "$global_prs" "$global_issues" "$global_reviews"
+      else
+        printf 'GitHub public last %smo: unavailable\n' "$months"
+      fi
+    else
+      printf 'GitHub public last %smo: unavailable\n' "$months"
+    fi
+  fi
+done