Examine source code of Sidebrief for Kagi Summarizer

{
  "manifest_version": 3,
  "name": "Sidebrief for Kagi Summarizer",
  "version": "1.4.0",
  "description": "Summarize any page with Kagi Universal Summarizer",
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus",
    "storage"
  ],
  "host_permissions": [
    "https://kagi.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Sidebrief for Kagi Summarizer"
  },
  "sidebar_action": {
    "default_panel": "sidebar.html",
    "default_title": "Sidebrief for Kagi Summarizer",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "open-sidebar": {
      "suggested_key": {
        "default": "Alt+Shift+B"
      },
      "description": "Open Sidebrief sidebar"
    },
    "summarize-page": {
      "suggested_key": {
        "default": "Alt+Shift+S"
      },
      "description": "Summarize the current page"
    },
    "key-moments": {
      "suggested_key": {
        "default": "Alt+Shift+K"
      },
      "description": "Get key moments from the current page"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "summarizer@sethcottle.com",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}