chore(ci): prevent duplicate 'automerge' creation — use existing label id only (auto-label/auto-pr)

.gitea/workflows/auto-label.yml

@@ -20,9 +20,18 @@ jobs:
             echo "CI_TOKEN not set; skipping labeling"; exit 0; fi
           OWNER=$(echo "$REPO" | cut -d'/' -f1)
           NAME=$(echo "$REPO" | cut -d'/' -f2)
-          echo "Labeling PR #$PR_NUMBER on $OWNER/$NAME with 'automerge'"
+          echo "Resolving existing label id for 'automerge' in $OWNER/$NAME (no creation)"
+          curl -sS -o /tmp/labels.json -H "Authorization: token ${CI_TOKEN}" \
+            "${GITEA_BASE_URL}/api/v1/repos/${OWNER}/${NAME}/labels?limit=1000" || true
+          # Extract all ids whose name == automerge, prefer the smallest id (oldest)
+          LID=$(tr '\n' ' ' < /tmp/labels.json | \
+            grep -o '"id":[0-9][0-9]*[^\}]*"name":"automerge"' | \
+            sed -E 's/.*"id":([0-9]+).*/\1/' | sort -n | head -n1 || true)
+          if [ -z "${LID:-}" ]; then
+            echo "No existing 'automerge' label found; skipping labeling"; exit 0; fi
+          echo "Labeling PR #$PR_NUMBER with id $LID"
           curl -sS -X POST \
             -H "Content-Type: application/json" \
             -H "Authorization: token ${CI_TOKEN}" \
             "${GITEA_BASE_URL}/api/v1/repos/${OWNER}/${NAME}/issues/${PR_NUMBER}/labels" \
-            -d '["automerge"]' || true
+            -d '{"labels":['"${LID}"']}' || true

.gitea/workflows/auto-pr.yml

@@ -55,12 +55,22 @@ jobs:
           done
 
           if [ -n "${PR_NUMBER:-}" ]; then
-            echo "Adding 'automerge' label to PR #$PR_NUMBER"
+            echo "Resolving existing label id for 'automerge' (no creation)"
+            curl -sS -o /tmp/labels.json -H "Authorization: token ${CI_TOKEN}" \
+              "${GITEA_BASE_URL}/api/v1/repos/${OWNER}/${NAME}/labels?limit=1000" || true
+            LID=$(tr '\n' ' ' < /tmp/labels.json | \
+              grep -o '"id":[0-9][0-9]*[^\}]*"name":"automerge"' | \
+              sed -E 's/.*"id":([0-9]+).*/\1/' | sort -n | head -n1 || true)
+            if [ -n "${LID:-}" ]; then
+              echo "Adding 'automerge' (id=$LID) label to PR #$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/${PR_NUMBER}/labels" \
-              -d '["automerge"]' || true
+                -d '{"labels":['"${LID}"']}' || true
             else
-            echo "PR number could not be determined after retries; skipping label add"
+              echo "No existing 'automerge' label found; skipping label add"
+            fi
+          else
+            echo "PR number could not be determined; skipping label add"
           fi