CI: run on every branch push

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011ARcGWxLx21FwXJ3yfGriS

.github/workflows/ci.yml

@@ -2,7 +2,8 @@ name: CI
 
 on:
   push:
-    branches: [main]
+    branches: ['**']
+    tags-ignore: ['**']
   pull_request:
   workflow_dispatch: