Examine source code of Hibern8 Ctrl+Space

{
  "manifest_version": 3,
  "name": "Hibern8 Ctrl+Space",
  "version": "0.6.0",
  "description": "Hibernate idle tabs to free real RAM using the browser's native tab-discard. Firefox build.",
  "browser_specific_settings": {
    "gecko": {
      "id": "hibern8@wildheartholdingsllc.com",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "bookmarks",
    "alarms",
    "idle",
    "notifications",
    "declarativeNetRequest",
    "downloads"
  ],
  "incognito": "spanning",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_title": "Open Hibern8 Ctrl+Space",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Space",
        "mac": "MacCtrl+Space"
      },
      "description": "Open Hibern8 Ctrl+Space"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self'; object-src 'none'; img-src 'self' https: data:; style-src 'self' 'unsafe-inline'; connect-src 'self'; base-uri 'none'; form-action 'none'"
  }
}