fix: CI workflow improvements and test config patch path fix

.github/workflows/publish.yml

@@ -3,8 +3,11 @@ name: Publish
 on:
   workflow_dispatch:
   push:
+    branches: [main]
     tags:
       - "v*"
+  pull_request:
+    branches: [main]
 
 permissions:
   contents: read
@@ -43,6 +46,7 @@ jobs:
   publish:
     needs: build
     runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
     environment:
       name: pypi
       url: https://pypi.org/p/ctfd-mcp