Examine source code of Duo Translator - Translation & writing assistant

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "2.0.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "contextMenus",
    "alarms",
    "webNavigation"
  ],
  "host_permissions": [],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "all_frames": true,
      "css": [
        "assets/style.css"
      ]
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true,
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "commands": {
    "shortcut-translate-restore-page": {
      "suggested_key": {
        "default": "Alt+S",
        "linux": "Alt+S"
      },
      "description": "__MSG_shortcutTranslateRestorePage__"
    },
    "shortcut-translate": {
      "description": "__MSG_shortcutTranslate__"
    },
    "shortcut-restore": {
      "description": "__MSG_shortcutRestore__"
    },
    "shortcut-ai-workbench": {
      "suggested_key": {
        "default": "Alt+W",
        "linux": "Alt+W"
      },
      "description": "__MSG_shortcutAiWorkbench__"
    },
    "shortcut-translate-restore-paragraph": {
      "suggested_key": {
        "default": "Alt+Q",
        "linux": "Alt+Q"
      },
      "description": "__MSG_shortcutTranslateRestoreParagraph__"
    },
    "shortcut-translate-selection-input": {
      "suggested_key": {
        "default": "Alt+A",
        "linux": "Alt+A"
      },
      "description": "__MSG_shortcutTranslateSelectionInput__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "duo-translator@duotranslator.com",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  }
}