Examine source code of Framemarker: Visual Library

{
  "manifest_version": 3,
  "name": "Framemarker: Video Visual Highlighter",
  "version": "1.6.9",
  "description": "Save visual moments from YouTube, add notes, and revisit them in a private frame archive.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "clipboardWrite",
    "unlimitedStorage"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://*.youtube-nocookie.com/*",
    "https://*.supabase.co/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "config.js",
      "cloud.js",
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "default-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data: blob: https://img.youtube.com https://i.ytimg.com https://*.supabase.co; connect-src 'self' data: blob: https://*.supabase.co; frame-src https://www.youtube.com https://www.youtube-nocookie.com; script-src 'self'; object-src 'none';"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "framemark@theomiranda",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "websiteActivity",
          "websiteContent"
        ]
      }
    }
  }
}