Examine source code of Aura Volume Booster

{
  "manifest_version": 3,
  "name": "Aura Volume Booster",
  "description": "Crystal-clear volume boost up to 600% with ASMR mode, noise reduction, and smart compression",
  "version": "3.1.3",
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "128": "sound.png"
  },
  "action": {
    "default_icon": {
      "128": "sound.png"
    },
    "default_title": "Aura Volume",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "aura-volume-booster@manus.ai"
    }
  }
}