Examine source code of Steam Market Helper

{
  "manifest_version": 3,
  "name": "Steam Market Helper",
  "version": "1.0.0",
  "description": "Выбор предметов инвентаря Steam и выставление их на продажу по цене заявок стакана (buy/sell orders) торговой площадки.",
  "browser_specific_settings": {
    "gecko": {
      "id": "steam-market-helper@example.local",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "128.0"
    }
  },
  "permissions": [
    "storage",
    "scripting",
    "activeTab",
    "alarms"
  ],
  "host_permissions": [
    "https://steamcommunity.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "action": {
    "default_title": "Steam Market Helper",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://steamcommunity.com/id/*/inventory*",
        "https://steamcommunity.com/profiles/*/inventory*"
      ],
      "js": [
        "content/inventory-page-bridge.js"
      ],
      "world": "MAIN",
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://steamcommunity.com/id/*/inventory*",
        "https://steamcommunity.com/profiles/*/inventory*"
      ],
      "js": [
        "content/inventory-overlay.js"
      ],
      "css": [
        "content/overlay.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content/inventory-page-bridge.js"
      ],
      "matches": [
        "https://steamcommunity.com/*"
      ]
    }
  ]
}