fix: use search API with listForRepo fallback for issue dedup

Author: Hweinstock

.github/workflows/ci-failure-issue.yml

@@ -36,16 +36,27 @@ jobs:
               const branch = context.payload.workflow_run.head_branch;
               const title = `CI Failure: ${workflowName}`;
 
-              const { data: issues } = await github.rest.issues.listForRepo({
+              const { data } = await github.rest.search.issuesAndPullRequests({
+                q: `repo:${context.repo.owner}/${context.repo.repo} is:issue is:open in:title "${title}"`
+              });
+
+              if (data.items.some(i => i.title === title)) {
+                core.info(`Issue already exists for "${title}"`);
+                return;
+              }
+
+              // Fallback: check recent issues in case search index is stale
+              const { data: recent } = await github.rest.issues.listForRepo({
                 owner: context.repo.owner,
                 repo: context.repo.repo,
-                labels: 'high-severity,ci',
                 state: 'open',
-                per_page: 100
+                sort: 'created',
+                direction: 'desc',
+                per_page: 30
               });
 
-              if (issues.some(i => i.title === title)) {
-                core.info(`Issue already exists for "${title}"`);
+              if (recent.some(i => i.title === title)) {
+                core.info(`Issue already exists for "${title}" (found via fallback)`);
                 return;
               }