Examine source code of Z.ai Usage Helper

{
  "manifest_version": 3,
  "name": "Z.ai Usage Helper",
  "version": "0.2.0",
  "description": "Shows 5-hour quota reset time, countdown and subscription info on z.ai coding plan usage page.",
  "host_permissions": [
    "https://z.ai/*",
    "https://api.z.ai/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://z.ai/manage-apikey/coding-plan/personal/usage*",
        "https://z.ai/*/manage-apikey/coding-plan/personal/usage*"
      ],
      "js": [
        "src/content.js"
      ],
      "css": [
        "src/styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "zai-usage-helper@nniicckk",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  }
}