debug: increase startup wait and show full logs on failure

.forgejo/workflows/production.yaml

@@ -165,8 +165,8 @@ jobs:
           mix phx.server > phoenix.log 2>&1 &
           echo $! > phoenix.pid
           echo "Phoenix server started with PID $(cat phoenix.pid)"
-          sleep 3
-          echo "=== Phoenix startup logs ==="
+          sleep 10
+          echo "=== Phoenix startup logs (after 10s) ==="
           cat phoenix.log || echo "No logs yet"
           echo "=== Process status ==="
           ps aux | grep $(cat phoenix.pid) || echo "Process not found"
@@ -178,6 +178,14 @@ jobs:
         run: |
           timeout 60 bash -c 'until curl -f http://localhost:4000/health; do sleep 2; done'
 
+      - name: Show Phoenix logs on failure
+        if: failure()
+        run: |
+          echo "=== Full Phoenix logs ==="
+          cat phoenix.log || echo "No log file found"
+          echo "=== Process status ==="
+          ps aux | grep phoenix || echo "No Phoenix processes found"
+
       - name: Install Playwright dependencies
         working-directory: e2e
         run: |