Examine source code of Live Accessibility Overlay

{
  "manifest_version": 3,
  "name": "Live Accessibility Overlay",
  "version": "1.1.0",
  "description": "Find accessibility problems on any page, in plain language: contrast, headings, alt text and keyboard order. Checked locally.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "action": {
    "default_title": "Live Accessibility Overlay — toggle (Alt+Shift+A)",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "commands": {
    "toggle-overlay": {
      "suggested_key": {
        "default": "Alt+Shift+A"
      },
      "description": "Toggle the accessibility overlay"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "live-accessibility-overlay@balogunkrixus",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}