feat: add JavaScript/TypeScript wrapper with Playwright + Puppeteer support

Adds js/ package mirroring the Python wrapper architecture:
- Dual API: import from 'cloakbrowser' (Playwright) or 'cloakbrowser/puppeteer'
- TypeScript with full type definitions
- Same binary download/cache logic, same stealth args, same env vars
- Optional peer deps: users install only the runtime they need
- Full 6-site stealth test suite (sannysoft, incolumitas, BrowserScan, deviceandbrowserinfo, FingerprintJS, reCAPTCHA v3)
- Published to npm as cloakbrowser@0.1.2

js/package.json

@@ -0,0 +1,72 @@
+{
+  "name": "cloakbrowser",
+  "version": "0.1.2",
+  "description": "Stealth Chromium that passes every bot detection test. Drop-in Playwright/Puppeteer replacement with source-level fingerprint patches.",
+  "type": "module",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    },
+    "./puppeteer": {
+      "types": "./dist/puppeteer.d.ts",
+      "import": "./dist/puppeteer.js"
+    }
+  },
+  "files": [
+    "dist"
+  ],
+  "keywords": [
+    "stealth",
+    "browser",
+    "chromium",
+    "playwright",
+    "puppeteer",
+    "scraping",
+    "anti-detect",
+    "bot-detection",
+    "fingerprint",
+    "recaptcha",
+    "cloudflare",
+    "datadome"
+  ],
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/CloakHQ/cloakbrowser",
+    "directory": "js"
+  },
+  "homepage": "https://github.com/CloakHQ/cloakbrowser#javascript--nodejs",
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "peerDependencies": {
+    "playwright-core": ">=1.40.0",
+    "puppeteer-core": ">=21.0.0"
+  },
+  "peerDependenciesMeta": {
+    "playwright-core": {
+      "optional": true
+    },
+    "puppeteer-core": {
+      "optional": true
+    }
+  },
+  "dependencies": {
+    "tar": "^7.0.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.10.0",
+    "playwright-core": "^1.40.0",
+    "puppeteer-core": "^21.0.0",
+    "typescript": "^5.3.0",
+    "vitest": "^1.0.0"
+  },
+  "scripts": {
+    "build": "tsc",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run"
+  }
+}