ci: actively triage missing priority labels and intelligently clean up conflicting labels (#26865)

.github/scripts/apply-issue-labels.cjs

@@ -85,14 +85,51 @@ module.exports = async ({ github, context, core }) => {
       continue;
     }
 
-    const labelsToAdd = entry.labels_to_add || [];
-    labelsToAdd.push('status/bot-triaged');
-
+    let labelsToAdd = entry.labels_to_add || [];
     let labelsToRemove = entry.labels_to_remove || [];
+
     labelsToRemove.push('status/need-triage');
-    // Deduplicate array
+
+    if (labelsToAdd.includes('status/manual-triage')) {
+      // If the AI flagged it for manual triage, remove bot-triaged if it exists
+      labelsToRemove.push('status/bot-triaged');
+      // Ensure we don't accidentally try to add bot-triaged if the AI returned it
+      labelsToAdd = labelsToAdd.filter((l) => l !== 'status/bot-triaged');
+    } else {
+      // Standard successful bot triage
+      labelsToAdd.push('status/bot-triaged');
+    }
+
+    // Deduplicate arrays
+    labelsToAdd = [...new Set(labelsToAdd)];
     labelsToRemove = [...new Set(labelsToRemove)];
 
+    // Enforce mutually exclusive area labels
+    const areaLabelsToAdd = labelsToAdd.filter((l) => l.startsWith('area/'));
+    if (areaLabelsToAdd.length > 1) {
+      core.warning(
+        `Issue #${issueNumber} has multiple area labels to add: ${areaLabelsToAdd.join(', ')}. Keeping only the first one.`,
+      );
+      const firstArea = areaLabelsToAdd[0];
+      labelsToAdd = labelsToAdd.filter(
+        (l) => !l.startsWith('area/') || l === firstArea,
+      );
+    }
+
+    // Enforce mutually exclusive priority labels
+    const priorityLabelsToAdd = labelsToAdd.filter((l) =>
+      l.startsWith('priority/'),
+    );
+    if (priorityLabelsToAdd.length > 1) {
+      core.warning(
+        `Issue #${issueNumber} has multiple priority labels to add: ${priorityLabelsToAdd.join(', ')}. Keeping only the first one.`,
+      );
+      const firstPriority = priorityLabelsToAdd[0];
+      labelsToAdd = labelsToAdd.filter(
+        (l) => !l.startsWith('priority/') || l === firstPriority,
+      );
+    }
+
     if (labelsToAdd.length > 0) {
       await github.rest.issues.addLabels({
         owner: context.repo.owner,

.github/scripts/find-conflicting-labels.cjs

@@ -0,0 +1,60 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const fs = require('node:fs');
+
+module.exports = async ({ github, context, core }) => {
+  core.info('Fetching open issues to check for conflicting labels...');
+
+  const issues = await github.paginate(github.rest.issues.listForRepo, {
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    state: 'open',
+    per_page: 100,
+  });
+
+  const conflictingLabelIssues = [];
+
+  for (const issue of issues) {
+    if (issue.pull_request) continue;
+
+    const areaLabels = issue.labels
+      .filter((l) => l.name && l.name.startsWith('area/'))
+      .map((l) => l.name);
+
+    const priorityLabels = issue.labels
+      .filter((l) => l.name && l.name.startsWith('priority/'))
+      .map((l) => l.name);
+
+    if (areaLabels.length > 1 || priorityLabels.length > 1) {
+      let message = `Issue #${issue.number} has conflicting labels:`;
+      if (areaLabels.length > 1)
+        message += ` multiple areas (${areaLabels.join(', ')}).`;
+      if (priorityLabels.length > 1)
+        message += ` multiple priorities (${priorityLabels.join(', ')}).`;
+
+      core.info(message);
+
+      conflictingLabelIssues.push({
+        number: issue.number,
+        title: issue.title,
+        body: issue.body || '',
+      });
+    }
+  }
+
+  // Limit to 50 to avoid overwhelming the AI in a single run
+  const issuesToProcess = conflictingLabelIssues.slice(0, 50);
+
+  fs.writeFileSync(
+    'conflicting_labels_issues.json',
+    JSON.stringify(issuesToProcess, null, 2),
+  );
+
+  core.info(
+    `Found ${conflictingLabelIssues.length} issues with conflicting labels. Wrote ${issuesToProcess.length} to conflicting_labels_issues.json`,
+  );
+};