Examine source code of Rust Sentinel — Steam Linker

{
  "manifest_version": 3,
  "name": "Rust Sentinel — Steam Linker",
  "version": "1.0.4",
  "description": "One-time helper to link your Steam account to your Rust Sentinel Discord bot. Your Steam password is never shared.",
  "browser_specific_settings": {
    "gecko": {
      "id": "rust-sentinel-linker@rustsentinel.net",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Rust Sentinel — Steam Linker",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://companion-rust.facepunch.com/*",
    "https://rustsentinel.net/*",
    "https://www.rustsentinel.net/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://rustsentinel.net/link/*",
        "https://www.rustsentinel.net/link/*"
      ],
      "js": [
        "sentinel-code.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://companion-rust.facepunch.com/*"
      ],
      "js": [
        "facepunch-inject.js"
      ],
      "world": "MAIN",
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://companion-rust.facepunch.com/*"
      ],
      "js": [
        "facepunch-capture.js"
      ],
      "run_at": "document_start"
    }
  ]
}