ci: add coverage env variable to test script

Author: zhensherlock

package.json

@@ -8,7 +8,7 @@
     "build": "pnpm -r --aggregate-output --filter=./packages/* build",
     "dev": "pnpm -r --aggregate-output --filter=./packages/create-mcp-kit dev",
     "start": "pnpm -r --aggregate-output --filter=./packages/create-mcp-kit start",
-    "test": "vitest run",
+    "test": "cross-env NODE_V8_COVERAGE=./coverage/tmp vitest run",
     "coverage": "rimraf coverage && cross-env NODE_V8_COVERAGE=./coverage/tmp vitest run && npm run report",
     "report": "c8 report --reporter=lcov --reporter=html",
     "changeset": "changeset",