Examine source code of Simple ChatGPT Live Usage

{
  "manifest_version": 3,
  "name": "Simple ChatGPT Live Usage",
  "version": "1.5.0",
  "description": "Shows your ChatGPT 5-hour and weekly usage limits in a simple movable panel.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4c8b2a2f-1c5f-4ef0-8f96-0e9c9287f326}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://chatgpt.com/*",
    "https://chat.openai.com/*"
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "action": {
    "default_title": "Simple ChatGPT Live Usage",
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon-48.png"
  },
  "options_ui": {
    "page": "privacy/privacy.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "shared/config.js",
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "page/usage-bridge.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "shared/config.js",
        "shared/usage-core.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}