ci(guide): widen cd-develop smoke health-check window to ~5 min

The smoke step polled /guide/actuator/health for only 60s, but the Spring
Boot backend restart after `compose up -d` needs longer to warm up — so a
successful deploy was marked FAILED (run #6, PR #11). Poll 30x10s (~5 min)
and echo attempts. No change to the deploy itself.

Closes #12

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/cd-develop.yml

@@ -74,12 +74,15 @@ jobs:
 
       - name: Smoke — guide backend healthy + content served
         run: |
-          for i in $(seq 1 12); do
+          # `compose up -d` restarts the Spring Boot backend, which needs well over 60s to warm
+          # up and report healthy — poll for ~5 min so a normal restart isn't a false failure.
+          for i in $(seq 1 30); do
             s=$(curl -sk -o /dev/null -w '%{http_code}' https://api.bcos.dev/guide/actuator/health || echo 000)
-            [ "$s" = "200" ] && { echo "guide healthy"; exit 0; }
-            sleep 5
+            [ "$s" = "200" ] && { echo "guide healthy (attempt $i)"; exit 0; }
+            echo "attempt $i/30: health=$s — waiting 10s"
+            sleep 10
           done
-          echo "::error::guide did not report healthy after deploy"; exit 1
+          echo "::error::guide did not report healthy 5 min after deploy"; exit 1
 
       # Posts a ✅/🔴 card to #hiveops-dev-deploy on every run (deploy result). Runs even on
       # failure so a broken build/deploy/smoke is announced, not silent. SLACK_WEBHOOK_URL is an