Update GitHub Actions workflow to use main branch

- Change trigger branch from master to main
- Keep deployment condition for both master and main for compatibility

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: jamiely

.github/workflows/deploy.yml

@@ -2,9 +2,9 @@ name: Build and Deploy
 
 on:
   push:
-    branches: [ master, main ]
+    branches: [ main ]
   pull_request:
-    branches: [ master, main ]
+    branches: [ main ]
 
 jobs:
   build-and-deploy:
@@ -51,4 +51,4 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./resources/public
-          cname: false
+          cname: false