chore(client): install @atcute/internal-dev-env as dev dependencies

Author: shuuji3

packages/client/package.json

@@ -35,6 +35,7 @@
     "@atcute/client": "^2.0.6"
   },
   "devDependencies": {
+    "@atcute/internal-dev-env": "workspace:*",
     "@tsky/lexicons": "workspace:*",
     "@vitest/coverage-istanbul": "2.1.6",
     "globals": "^15.12.0",

pnpm-workspace.yaml

@@ -1,3 +1,4 @@
 packages:
   - packages/*
+  - packages/internal/*
   - docs/