prepare for client/server split

packages/client/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "@plainidx/client",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "dist/exports.js",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "tsc --build"
+  },
+  "devDependencies": {
+    "@plainidx/configs": "workspace:*",
+    "typescript": "^5.7.2"
+  },
+  "dependencies": {
+    "@plainidx/base": "workspace:*",
+    "nanoid": "^5.0.9"
+  }
+}