fix: sanitize PR labels before GitHub API call

Author: calebephrem

.github/workflows/bot.yml

@@ -93,16 +93,34 @@ jobs:
           echo "labels=$LABELS" >> $GITHUB_OUTPUT
 
       - name: Apply labels
-        if: steps.analyze.outputs.labels != ''
         uses: actions/github-script@v7
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |
+            const raw = "${{ steps.analyze.outputs.labels }}";
+
+            if (!raw || raw.trim().length === 0) {
+              console.log("No labels to apply");
+              return;
+            }
+
+            const labels = raw
+              .split(",")
+              .map(l => l.trim())
+              .filter(l => l.length > 0);
+
+            if (labels.length === 0) {
+              console.log("Labels resolved to empty after filtering");
+              return;
+            }
+
+            console.log("Applying labels:", labels);
+
             await github.rest.issues.addLabels({
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.payload.pull_request.number,
-              labels: "${{ steps.analyze.outputs.labels }}".split(",")
+              labels,
             });
 
       - name: Comment on PR