Examine source code of Microscape Minion

{
  "manifest_version": 3,
  "name": "Microscape Minion",
  "version": "0.1.26",
  "description": "Idle detection, goal tracking, and material-runout alerts for Microscape. Read-only — never sends input to the game.",
  "permissions": [
    "notifications",
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://microscape.cc/*"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "microscape-minion@microscape.cc",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://microscape.cc/play/*"
      ],
      "js": [
        "src/injected.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://microscape.cc/play/*"
      ],
      "js": [
        "src/content.js"
      ],
      "run_at": "document_start",
      "world": "ISOLATED"
    }
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_title": "Microscape Minion",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}