feat: initial LexAI Chrome extension scaffold

- WXT + React 18 + TypeScript setup
- Background service worker (LLM API proxy)
- Content script (floating toolbar + text selection)
- Options page (provider/model/API key config)
- Popup UI
- Gitea Actions workflows (CI, preview, release)
- Vitest unit tests + Playwright E2E setup
- Supports: OpenAI, Anthropic, Groq, OpenRouter

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "lexai",
+  "version": "0.1.0",
+  "description": "A Grammarly-like Chrome Extension powered by your own LLM provider and API key",
+  "scripts": {
+    "dev": "wxt",
+    "build": "wxt build",
+    "zip": "wxt zip",
+    "test": "vitest",
+    "test:e2e": "playwright test",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "wxt": "^0.20.18",
+    "zustand": "^5.0.3",
+    "tweetnacl": "^1.0.3",
+    "tweetnacl-util": "^0.15.1"
+  },
+  "devDependencies": {
+    "@types/react": "^18.3.1",
+    "@types/react-dom": "^18.3.1",
+    "typescript": "^5.7.3",
+    "tailwindcss": "^3.4.17",
+    "autoprefixer": "^10.4.20",
+    "vitest": "^3.0.7",
+    "@playwright/test": "^1.50.1"
+  }
+}