Examine source code of Input Translator

{
  "manifest_version": 3,
  "name": "Input Translator",
  "description": "Translate your input text with AI.",
  "version": "0.5.8",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "author": "rxliuli",
  "action": {
    "default_icon": {
      "16": "icon/16.png",
      "32": "icon/32.png",
      "48": "icon/48.png",
      "96": "icon/96.png",
      "128": "icon/128.png"
    }
  },
  "commands": {
    "translate": {
      "suggested_key": {
        "default": "Alt+T"
      },
      "description": "Translate your input text with AI."
    }
  },
  "homepage_url": "https://rxliuli.com/project/input-translator",
  "browser_specific_settings": {
    "gecko": {
      "id": "input-translator@rxliuli.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": false,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}