chore(ci): add merge group for checks and enhance test result validation

.github/workflows/tests.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches: ["master"]
   pull_request:
-    branches: ["master"]
 
 permissions:
     contents: read
@@ -37,3 +36,17 @@ jobs:
 
       - name: "Enforce coverage"
         run: uv run coverage report --show-missing --skip-covered --fail-under=100
+
+  check-tests:
+    name: "Tests successful"
+    needs: [tests]
+    runs-on: "ubuntu-latest"
+    if: always()
+
+    steps:
+      - name: "Check results"
+        run: |
+          if [ "${{ needs.tests.result }}" != "success" ]; then
+            echo "Tests failed"
+            exit 1
+          fi

.pre-commit-config.yaml

@@ -2,8 +2,6 @@ ci:
   autoupdate_schedule: weekly
   autofix_prs: false
   autoupdate_commit_msg: '[pre-commit.ci] pre-commit autoupdate'
-default_language_version:
-  python: python3.10
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0