Add initial delay to CI gate to let other workflows start

Fixes race condition where CI gate could complete before slower
workflows even start.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: raman325

.github/workflows/ci-gate.yaml

@@ -29,6 +29,10 @@ jobs:
         run: |
           echo "Waiting for all checks on $SHA to complete..."
 
+          # Initial delay to let other workflows start
+          echo "Waiting 60 seconds for other workflows to start..."
+          sleep 60
+
           while true; do
             # Get all check runs for this commit
             CHECKS=$(gh api "repos/$REPO/commits/$SHA/check-runs" \