Examine source code of Brightery Xcursor

{
  "manifest_version": 3,
  "name": "Brightery Xcursor",
  "short_name": "Xcursor",
  "version": "1.3.0",
  "description": "A fast, private custom cursor studio for Firefox with original packs, uploads, effects, favorites, and per-site controls.",
  "icons": {
    "16": "assets/icons/icon-16.png",
    "32": "assets/icons/icon-32.png",
    "48": "assets/icons/icon-48.png",
    "128": "assets/icons/icon-128.png"
  },
  "action": {
    "default_title": "Brightery Xcursor",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icons/icon-16.png",
      "32": "assets/icons/icon-32.png"
    }
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content/effects-engine.js",
        "content/cursor-engine.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "options_page": "options/options.html",
  "commands": {
    "toggle-xcursor": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Toggle Brightery Xcursor"
    },
    "reset-xcursor": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      },
      "description": "Restore the default cursor"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/cursors/*.png"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "brightery-xcursor@brightery.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}