Examine source code of Scouter

{
  "manifest_version": 3,
  "name": "Scouter",
  "description": "Bridging the gap between theory and practice.",
  "version": "0.13.1",
  "action": {
    "default_icon": "icon48.png",
    "default_popup": "popup.html"
  },
  "commands": {
    "RunLastPrompt": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Run last prompt"
    },
    "Open": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Open"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content_script.js",
        "js/vendor.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "scouter@dabing.com"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>"
  ]
}