chore(ci): auto-pr 라벨 자동부여 재검증 ping

Reviewed-on: #5

.gitea/workflows/auto-pr.yml

@@ -33,6 +33,34 @@ jobs:
           echo "API status: $HTTP_CODE"
           if [ "$HTTP_CODE" = "201" ]; then
             echo "PR created"; cat /tmp/pr_resp.json
+            PR_NUMBER=$(cat /tmp/pr_resp.json | sed -n 's/.*"number":\([0-9]*\).*/\1/p' | head -n1)
           else
             echo "PR not created (possibly exists). Response:"; cat /tmp/pr_resp.json || true
           fi
+
+          # Retry to resolve PR number by listing open PRs and matching head/base
+          i=0
+          while [ -z "${PR_NUMBER:-}" ] && [ $i -lt 10 ]; do
+            i=$((i+1))
+            echo "[retry $i] Resolving PR number for $HEAD_BRANCH -> $BASE_BRANCH"
+            curl -sS -o /tmp/pr_list.json -H "Authorization: token ${CI_TOKEN}" \
+              "${GITEA_BASE_URL}/api/v1/repos/${OWNER}/${NAME}/pulls?state=open" || true
+            # Extract PR number matching head.ref==HEAD_BRANCH and base.ref==BASE_BRANCH
+            PR_NUMBER=$(awk -v hb="$HEAD_BRANCH" -v bb="$BASE_BRANCH" 'BEGIN{RS="},"; pr=""} {
+              if($0 ~ /\"head\":\{[^}]*\"ref\":\"" hb "\"/ && $0 ~ /\"base\":\{[^}]*\"ref\":\"" bb "\"/){
+                if (match($0, /\"number\":([0-9]+)/, m)) { print m[1]; exit }
+              }
+            }' /tmp/pr_list.json)
+            if [ -z "${PR_NUMBER:-}" ]; then sleep 2; fi
+          done
+
+          if [ -n "${PR_NUMBER:-}" ]; then
+            echo "Adding 'automerge' label to PR #$PR_NUMBER"
+            curl -sS -X POST \
+              -H "Content-Type: application/json" \
+              -H "Authorization: token ${CI_TOKEN}" \
+              "${GITEA_BASE_URL}/api/v1/repos/${OWNER}/${NAME}/issues/${PR_NUMBER}/labels" \
+              -d '["automerge"]' || true
+          else
+            echo "PR number could not be determined after retries; skipping label add"
+          fi