ci: skip check stage on main push since PRs enforce it

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -25,6 +25,7 @@ jobs:
   # ---------------------------------------------------------------------------
   check:
     name: Check
+    if: github.event_name == 'pull_request'
     runs-on: docker
     container:
       image: rust:1.94-bookworm
@@ -87,7 +88,6 @@ jobs:
     name: Detect Changes
     runs-on: docker
     if: github.ref == 'refs/heads/main'
-    needs: [check]
     container:
       image: alpine:latest
     outputs: