run on pr review, not pr

.gitea/workflows/ci.yml

@@ -4,7 +4,8 @@ on:
   push:
     branches:
       - main
-  pull_request:
+  pull_request_review:
+
   workflow_dispatch:
 
 permissions:
@@ -14,8 +15,6 @@ jobs:
   flake-check:
     name: Flake Check
     runs-on: [self-hosted, nix-builder]
-    # Only auto-run on main branch, PRs require workflow_dispatch
-    if: gitea.event_name == 'push' && gitea.ref == 'refs/heads/main'
     needs: [format-check]
     steps:
       - name: Checkout repository