Examine source code of ai-usage-extension

{
  "manifest_version" : 3 ,
  "name" : "__MSG_appName__" ,
  "version" : "0.1.30",
  "description" : "__MSG_appDescription__" ,
  "default_locale" : "en" ,
  "permissions" : [
    "storage" ,
    "alarms" ,
    "cookies" 
  ],
  "host_permissions" : [
    "https://claude.ai/*" ,
    "https://chatgpt.com/*" ,
    "https://chat.openai.com/*" ,
    "https://platform.minimax.io/*" ,
    "https://platform.minimaxi.com/*" ,
    "https://www.kimi.com/*" ,
    "https://cursor.com/*" ,
    "https://platform.xiaomimimo.com/*" ,
    "https://z.ai/*" ,
    "https://api.z.ai/*" ,
    "https://open.bigmodel.cn/*" ,
    "https://home.qwencloud.com/*" ,
    "https://cs-data.qwencloud.com/*" ,
    "https://platform-home.qianwenai.com/*" ,
    "https://cs-data.qianwenai.com/*" 
  ],
  "background" : {
    "scripts" : [
      "src/background/index.js" 
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ai-usage-tracker@numbereleven-a",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ],
        "optional": [
          "technicalAndInteraction",
          "personallyIdentifyingInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "action" : {
    "default_popup" : "src/sidepanel.html",
    "default_icon" : {
      "16" : "icons/badges/range-10.png",
      "32" : "icons/badges/range-10.png",
      "48" : "icons/badges/range-10.png",
      "128" : "icons/badges/range-10.png"
    },
    "default_title" : "__MSG_appShortName__" 
  },
  "options_ui" : {
    "page": "src/options.html" ,
    "open_in_tab": true
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://claude.ai/*" ,
        "https://chatgpt.com/*" ,
        "https://chat.openai.com/*" 
      ],
      "js" : [
        "src/content/index.js" 
      ],
      "css" : [
        "src/content/styles/overlay.css" 
      ],
      "run_at" : "document_idle" 
    },
    {
      "matches" : [
        "https://z.ai/*" 
      ],
      "js" : [
        "src/content/glm.js" 
      ],
      "run_at" : "document_idle" 
    }
  ],
  "icons" : {
    "16" : "icons/icon-16.png",
    "48" : "icons/icon-48.png",
    "128" : "icons/icon-128.png"
  }
}