Examine source code of Downloads Auto-Cleaner

{
  "manifest_version": 3,
  "name": "Downloads Auto-Cleaner",
  "version": "1.0.0",
  "description": "Automatically clears completed, failed, and cancelled downloads within 5 seconds.",
  "permissions": [
    "downloads"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "downloads-cleaner@local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}