Examine source code of Big Clipboard

{
  "manifest_version": 3,
  "name": "Big Clipboard",
  "version": "1.0.0",
  "description": "A powerful clipboard manager that syncs across devices with cloud storage and sharing capabilities",
  "browser_specific_settings": {
    "gecko": {
      "id": "big-clipboard@bigclipboard.com",
      "strict_min_version": "112.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "clipboardRead",
    "identity",
    "alarms",
    "notifications"
  ],
  "host_permissions": [
    "https://api.bigclipboard.com/*"
  ],
  "background": {
    "scripts": [
      "background/service-worker.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Big Clipboard",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script-simple.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "popup/*",
        "icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com;"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+V",
        "mac": "Command+Shift+V"
      },
      "description": "Open Big Clipboard"
    }
  }
}