chore: update package.json with scoped name and additional metadata

package.json

@@ -1,21 +1,51 @@
 {
-  "name": "gai",
+  "name": "@mplan/gai",
   "version": "0.1.4",
   "description": "AI-powered git helper — commit messages, PRs, code review, changelogs, and more",
-  "module": "index.ts",
+  "license": "MIT",
   "type": "module",
   "bin": {
     "gai": "./index.ts"
   },
+  "files": [
+    "index.ts",
+    "src",
+    "README.md",
+    "LICENSE"
+  ],
+  "engines": {
+    "bun": ">=1"
+  },
   "scripts": {
     "gai": "bun run index.ts",
-    "build": "bun build --compile index.ts --outfile gai"
+    "build": "bun build --compile index.ts --outfile gai",
+    "prepublishOnly": "bun test"
+  },
+  "keywords": [
+    "git",
+    "ai",
+    "cli",
+    "commit",
+    "pull-request",
+    "code-review",
+    "changelog",
+    "bun",
+    "deepseek"
+  ],
+  "author": "Mplan",
+  "repository": {
+    "type": "git",
+    "url": "https://git.catpl.top/Mplan/gai.git"
+  },
+  "homepage": "https://git.catpl.top/Mplan/gai",
+  "bugs": {
+    "url": "https://git.catpl.top/Mplan/gai/issues"
+  },
+  "publishConfig": {
+    "registry": "https://git.catpl.top/api/packages/mplan/npm/"
   },
   "private": false,
   "devDependencies": {
     "@types/bun": "latest"
-  },
-  "peerDependencies": {
-    "typescript": "^5"
   }
 }