Examine source code of Add to minimarks

{
  "manifest_version": 3,
  "name": "Add to minimarks",
  "version": "25.8",
  "description": "Add links to minimarks in just a click. Bookmark the current tab using the toolbar icon, a custom shortcut, or the context menu.",
  "permissions": [
    "contextMenus",
    "storage",
    "scripting",
    "notifications",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "https://id.bitz.ag/*",
    "https://minimarks.com/*"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_title": "Add to minimarks"
  },
  "background": {
    "service_worker": "bg.js",
    "scripts": [
      "bg.js"
    ]
  },
  "commands": {
    "save-to-minimarks": {
      "suggested_key": {
        "default": "Ctrl+Shift+M",
        "mac": "Command+Shift+M"
      },
      "description": "Add current tab to minimarks"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://id.bitz.ag/ext-activate*"
      ],
      "js": [
        "bridge.cs.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "add-to-minimarks@bitzag.com",
      "strict_min_version": "141.0"
    }
  }
}