Examine source code of Quick Commands for Firefox

{
  "manifest_version": 2,
  "name": "Quick Commands",
  "version": "1.0.0",
  "description": "Vivaldi-style Quick Commands palette for Firefox. Press Shift+Cmd+K (Mac) or Shift+Ctrl+K (Win/Linux) to open.",
  "browser_specific_settings": {
    "gecko": {
      "id": "quick-commands@firefox-extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "tabs",
    "bookmarks",
    "history",
    "sessions",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "commands": {
    "open-quick-commands": {
      "suggested_key": {
        "default": "Shift+Ctrl+K",
        "mac": "Shift+Command+K"
      },
      "description": "Open Quick Commands"
    }
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png"
    },
    "default_title": "Quick Commands"
  },
  "web_accessible_resources": [
    "overlay.css"
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "open_in_tab": true
  }
}