feat(cli): add initial CLI implementation with argument parsing and prompt handling

- Created package.json and package-lock.json for CLI package.
- Implemented argument parsing in args.ts to handle various flags and commands.
- Developed main CLI logic in cli.ts to execute commands and handle errors.
- Added configuration loading from a JSON file in config.ts, with environment variable support.
- Implemented prompt resolution and provider interaction in prompt.ts.
- Added usage documentation for the CLI.
- Configured TypeScript settings in tsconfig.json for the CLI package.
- Updated README in vscode package to reflect the new CLI functionality.
- Refactored root tsconfig.json to streamline project structure.

packages/chrome/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "lexai-chrome",
+  "version": "1.1.0",
+  "description": "LexAI Chrome extension (Manifest V3) — BYO-LLM writing assistant",
+  "private": true,
+  "type": "module",
+  "engines": {
+    "node": ">=22"
+  },
+  "scripts": {
+    "dev": "wxt",
+    "build": "wxt build",
+    "zip": "wxt zip",
+    "postinstall": "wxt prepare",
+    "typecheck": "tsc --noEmit && tsc --noEmit -p tsconfig.test.json",
+    "test": "vitest",
+    "test:e2e": "playwright test"
+  },
+  "dependencies": {
+    "@wxt-dev/module-react": "^1.1.5",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "tweetnacl": "^1.0.3",
+    "wxt": "^0.20.18"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.50.1",
+    "@types/chrome": "^0.1.37",
+    "@types/react": "^18.3.1",
+    "@types/react-dom": "^18.3.1",
+    "jsdom": "^28.1.0",
+    "typescript": "^5.7.3",
+    "vitest": "^3.0.7"
+  }
+}