Examine source code of Omid Spinner & Canceler

{
  "manifest_version": 3,
  "name": "Setinrate Price Spinner & Canceler",
  "version": "2",
  "description": "Stable no-memory version with full dual-field support (price + amount), fixed white overlay on Toman, ±10 quick controls, cancel-all button, auto-tab switching before cancel, optimized for setinrate.com trading room.",
  "author": "Omid Hosseini (@omid_1700)",
  "homepage_url": "https://setinrate.com",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "96": "icon96.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://setinrate.com/room*",
        "*://www.setinrate.com/room*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [],
  "host_permissions": [
    "*://setinrate.com/*",
    "*://www.setinrate.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "setinrate-spinner@omidhosseini.dev",
      "strict_min_version": "109.0"
    }
  }
}