fix: ensure CLI is available for integration tests

- Change Jest config: name -> displayName to fix warning
- Point playground cs script directly to parent binary
  instead of relying on yalc-linked version
- This makes tests work regardless of yalc install status

Author: MSACC

playground/jest.config.js

@@ -1,7 +1,8 @@
 module.exports = {
-  name: 'Integration test',
+  displayName: 'Integration test',
   testMatch: ['**/__tests__/?(*.)+(spec|test).js'],
   transform: {},
   coverageDirectory: '../coverage/',
   collectCoverage: true,
+  testEnvironment: 'node',
 };

playground/package.json

@@ -8,7 +8,7 @@
     "start": "strapi start",
     "build": "strapi build",
     "strapi": "strapi",
-    "cs": "config-sync"
+    "cs": "node ../bin/config-sync"
   },
   "devDependencies": {
     "@types/node": "^24.0.7",