Examine source code of WTM TikTok Method

{
  "update_url" : "https://clients2.google.com/service/update2/crx" ,
  "manifest_version" : 3 ,
  "name" : "WTM TikTok Method",
  "version" : "2.0.5",
  "description" : "Real 1000p conversion for high-resolution MP4 videos with a local patch workflow.",
  "content_security_policy" : {
    "extension_pages": "script-src 'self'; object-src 'self'; worker-src 'self'"
  },
  "icons" : {
    "16" : "icons/brand-wtm.png",
    "32" : "icons/brand-wtm.png",
    "48" : "icons/brand-wtm.png",
    "128" : "icons/brand-wtm.png"
  },
  "action" : {
    "default_popup" : "popup.html",
    "default_icon" : {
      "16" : "icons/brand-wtm.png",
      "32" : "icons/brand-wtm.png",
      "48" : "icons/brand-wtm.png",
      "128" : "icons/brand-wtm.png"
    }
  },
  "permissions" : [
    "storage" 
  ],
  "host_permissions" : [
    "https://kuronai-auth.hrmsalih.workers.dev/*" ,
    "https://api-tp.editingnews.com/*" ,
    "https://wizard.hrmsalih.workers.dev/*" ,
    "*://*.tiktok.com/*" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "*://www.tiktok.com/upload*" ,
        "*://www.tiktok.com/tiktokstudio/upload*" ,
        "*://www.tiktok.com/creator-center*" ,
        "*://*.tiktok.com/upload*" ,
        "*://*.tiktok.com/tiktokstudio/upload*" ,
        "*://*.tiktok.com/creator-center*" ,
        "*://*.tiktok.com/*" 
      ],
      "js" : [
        "content.js" 
      ],
      "run_at" : "document_start" 
    }
  ],
  "web_accessible_resources" : [
    {
      "resources" : [
        "inject.js" ,
        "inject-bridge.js" 
      ],
      "matches" : [
        "*://*.tiktok.com/*" 
      ]
    }
  ]
}