Examine source code of Gemini Prompt & Diff

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "1.9",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "gemini-prompt-and-diff@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "img/16.png",
    "32": "img/32.png",
    "48": "img/48.png",
    "128": "img/128.png"
  },
  "permissions": [
    "scripting",
    "storage",
    "unlimitedStorage",
    "contextMenus"
  ],
  "host_permissions": [
    "https://*.google.com/*",
    "https://*.google.co.jp/*"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.google.com/*",
        "https://*.google.co.jp/*"
      ],
      "js": [
        "js/common.js",
        "js/content.js"
      ]
    }
  ]
}