Examine source code of ProxyMaster

{
  "manifest_version": 2,
  "name": "ProxyMaster",
  "version": "1.4",
  "description": "Rule-based per-site proxy switcher with global toggle and smart prompts for blocked domains.",
  "author": "Ubastic",
  "homepage_url": "https://github.com/Ubastic/clash-firefox-addons",
  "developer": {
    "name": "Ubastic",
    "url": "https://github.com/Ubastic"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "proxy",
    "alarms",
    "activeTab",
    "tabs",
    "notifications",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "per-site-proxy-switcher@8buff.top",
      "strict_min_version": "91.1.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "ProxyMaster",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "persistent": true
  },
  "incognito": "spanning",
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  }
}