fix: increase propagation wait and add health check before smoke test

Author: manascb1344

.github/workflows/ci-cd.yml

@@ -76,8 +76,27 @@ jobs:
 
       - name: Wait for propagation
         run: |
-          echo "Waiting 5s for Modal deployment to propagate..."
-          sleep 5
+          echo "Waiting 30s for Modal deployment to propagate..."
+          sleep 30
+
+      - name: Health check
+        run: |
+          HEALTH_URL="${{ secrets.MODAL_WEBHOOK_URL }}/health"
+          if [ -n "$HEALTH_URL" ] && [ "$HEALTH_URL" != "/health" ]; then
+            for i in $(seq 1 15); do
+              if curl -sf "$HEALTH_URL" > /dev/null 2>&1; then
+                echo "Runner health check passed"
+                exit 0
+              fi
+              echo "Waiting for runner... ($i/15)"
+              sleep 2
+            done
+            echo "Health check failed — runner not responding"
+            exit 1
+          else
+            echo "MODAL_WEBHOOK_URL not configured, skipping health check"
+            sleep 10
+          fi
 
   # ── Stage 3: Smoke Test (confirms runner is alive) ──────────────────
   smoke-test: