bridge + sync: onboard windy-calendar-site (static, no workflows; guards only)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/pr_status_bridge.py

@@ -54,7 +54,7 @@ REPOS = os.environ.get(
     " windy-drops windy-code-web windy-code windy-traveler windy-registry eternitas"
     " windy-translate windytranslate-site windytraveler-site windy-hand"
     " windy-cloud-sites windy-cloud-domains windy-cloud-vps windytalk windy-pro windy-mind"
-    " windy-inbox windy-text windy-call windy-cell windy-hand-site",
+    " windy-inbox windy-text windy-call windy-cell windy-hand-site windy-calendar-site",
 ).split()
 
 # Gitea run status -> GitHub status state. `skipped` is deliberately absent: a