Examine source code of Synclify

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "0.5.0",
  "icons": {
    "128": "/extension-icon-firefox.png"
  },
  "default_locale": "en",
  "optional_permissions": [
    "activeTab",
    "https://*/*",
    "http://*/*"
  ],
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "https://api.synclify.party/*",
    "http://localhost:3001/*",
    "https://eu.i.posthog.com/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src 'self' https://*.posthog.com https://eu.i.posthog.com http://localhost:3000 http://localhost:3001 ws://localhost:3000 ws://localhost:3001 https://api.synclify.party;",
  "browser_specific_settings": {
    "gecko": {
      "id": "{eb8f96ca-d31a-4f74-89ad-c25045497adb}"
    }
  },
  "web_accessible_resources": [
    "injected.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Synclify",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  }
}