feat(recipe-upgrade): add stale-test PR helpers

.claude/skills/recipe-upgrade/post-pr-comment.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+# recipe-upgrade :: post a comment on a Gitea PR/issue
+# ----------------------------------------------------
+# Usage:
+#   BODY='text' post-pr-comment.sh <owner/repo> <pr-number>
+#   BODY_FILE=/tmp/comment.md post-pr-comment.sh <owner/repo> <pr-number>
+set -o errexit -o nounset -o pipefail
+
+REPO="${1:?usage: post-pr-comment.sh <owner/repo> <pr-number>}"
+PRIDX="${2:?usage: post-pr-comment.sh <owner/repo> <pr-number>}"
+TESTENV="${TESTENV:-/srv/cc-ci/.testenv}"
+set -a; . "$TESTENV"; set +a
+: "${GITEA_USERNAME:?}"
+: "${GITEA_PASSWORD:?}"
+: "${GITEA_URL:?}"
+
+if [ -n "${BODY_FILE:-}" ]; then
+  BODY="$(<"${BODY_FILE}")"
+else
+  : "${BODY:?set BODY or BODY_FILE}"
+fi
+
+API="https://${GITEA_URL}/api/v1"
+AUTH=(-u "${GITEA_USERNAME}:${GITEA_PASSWORD}")
+
+resp="$(mktemp)"
+code="$({ curl -sS -o "$resp" -w "%{http_code}" "${AUTH[@]}" \
+  -H "Content-Type: application/json" \
+  -X POST "${API}/repos/${REPO}/issues/${PRIDX}/comments" \
+  -d "$(jq -n --arg body "$BODY" '{body:$body}')"; } || true)"
+
+if [ "$code" != "201" ]; then
+  echo "ERROR: comment POST failed for ${REPO}#${PRIDX} (HTTP ${code})" >&2
+  cat "$resp" >&2 || true
+  rm -f "$resp"
+  exit 1
+fi
+
+jq -r '"COMMENT_URL=" + (.html_url // "") + "\nCOMMENT_ID=" + ((.id // 0) | tostring)' "$resp"
+rm -f "$resp"