Examine source code of Pause inactive tabs

{
  "manifest_version": 3,
  "name": "Pause & Resume Video — Smart Control",
  "version": "3.1.0",
  "description": "Pause les vidéos quand l’onglet est inactif et relance quand actif. Popup ON/OFF + exclusions par site (persistance et mise à jour instantanée).",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Pause & Resume Video",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pause-tabs@example.com",
      "strict_min_version": "109.0"
    }
  }
}