Examine source code of Chat Mignon

{
  "manifest_version": 2,
  "name": "CuteCat",
  "version": "1.2",
  "description": "Un adorable chat animé qui se promène au bas de vos pages web. Personnalisable avec 20+ skins, interactions et environnement complet (lit, jouet). Extension légère et amusante pour égayer votre navigation !",
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "js/namespace.js",
        "js/StorageManager.js",
        "js/SpriteManager.js",
        "js/PositionManager.js",
        "js/StyleManager.js",
        "js/CatBed.js",
        "js/CatToy.js",
        "js/CuteCat.js",
        "js/boot.js"
      ],
      "css": [
        "styles/cat-overlay.css"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Chat Mignon - Paramètres",
    "default_icon": {
      "16": "assets/icon.png",
      "32": "assets/icon.png"
    }
  },
  "web_accessible_resources": [
    "assets/cats/*/*.png",
    "assets/materials/*.png"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; img-src 'self' data: chrome-extension: moz-extension:",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "applications": {
    "gecko": {
      "id": "chat-mignon@ctrl-v.fr",
      "strict_min_version": "58.0"
    }
  },
  "icons": {
    "16": "assets/icon.png",
    "32": "assets/icon.png",
    "48": "assets/icon.png",
    "96": "assets/icon.png"
  }
}