Update CI to only deploy from main branch

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

Author: ILindsley

.github/workflows/deploy-cloudflare.yml

@@ -2,7 +2,7 @@ name: Deploy to Cloudflare Workers
 
 on:
   push:
-    branches: [main, cloudflare-pages]
+    branches: [main]
 
 jobs:
   deploy: