Examine source code of ProductivityGuard

{
  "manifest_version": 2,
  "name": "ProductivityGuard",
  "version": "1.3.1",
  "description": "Blocks selected websites with site-specific temporary unblock, daily limits, categories, and schedule options. Password protection for sensitive actions. Includes Undo button and enable/disable toggle.",
  "icons": {
    "16": "icons/icon16.png",
    "19": "icons/icon19.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png",
    "512": "icons/icon512.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "storage"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.js",
        "content-blocker.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "ProductivityGuard",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "19": "icons/icon19.png",
      "32": "icons/icon32.png",
      "38": "icons/icon38.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mcankizilkaya@gmail.com",
      "strict_min_version": "120.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "web_accessible_resources": [
    "block.html"
  ]
}