chore: Update package.json with new version, description, author, and homepage for better project clarity

Author: experdot

package.json

@@ -1,10 +1,10 @@
 {
   "name": "pointer",
-  "version": "1.0.0",
-  "description": "An Electron application with React and TypeScript",
+  "version": "1.0.0-preview.2",
+  "description": "AI desktop app with object tree, cross-table, and chat tree.",
   "main": "./out/main/index.js",
-  "author": "example.com",
-  "homepage": "https://electron-vite.org",
+  "author": "experdot@foxmail.com",
+  "homepage": "https://github.com/experdot/pointer",
   "scripts": {
     "format": "prettier --write .",
     "lint": "eslint --cache .",