Examine source code of Bombacha VK

{
  "manifest_version": 2,
  "name": "Bombacha Extensões",
  "version": "1.0.54",
  "description": "Bombacha Extensões para VK: cria e agenda tópicos, responde mensagens, organiza favoritos e oferece backup completo dos dados.",
  "permissions": [
    "storage",
    "clipboardRead",
    "clipboardWrite",
    "alarms",
    "tabs",
    "notifications",
    "unlimitedStorage",
    "https://vk.ru/*",
    "*://*.vk.ru/*",
    "https://vk.com/*",
    "*://*.vk.com/*",
    "https://m.vkvideo.ru/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://vk.com/away.php*",
        "https://vk.ru/away.php*"
      ],
      "js": [
        "away/content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://m.vk.ru/*",
        "*://m.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "recurring-paste-guard.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*",
        "https://m.vkvideo.ru/*"
      ],
      "js": [
        "antibot/content.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*",
        "https://m.vkvideo.ru/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "topic-authors.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "social-embeds.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "message-alerts-content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "scheduler/content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "scheduler/launcher.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "responder/content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "favorite-topics/content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://vk.ru/*",
        "*://*.vk.ru/*",
        "https://vk.com/*",
        "*://*.vk.com/*"
      ],
      "js": [
        "sidebar-customizer.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "scheduler/background.js",
      "responder/background.js",
      "favorite-topics/background.js",
      "message-alerts-background.js",
      "sidebar-background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "vk_icon48_v361.png",
    "default_popup": "popup.html",
    "default_title": "Bombacha Extensões"
  },
  "icons": {
    "16": "vk_icon16_v361.png",
    "48": "vk_icon48_v361.png",
    "128": "vk_icon128_v361.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fa688cc7-3553-4f8b-a5e9-d1aacc9cb842}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}