Examine source code of OMP Send Context

{
  "manifest_version": 2,
  "name": "OMP Send Context",
  "version": "1.8.28",
  "description": "Send selected web-page context to Oh My Pi when explicitly invoked; never send automatically.",
  "homepage_url": "https://github.com/klondikemarlen/omp-send-context",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "omp-send-context@klondikemarlen.github.io",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "http://*/*",
    "https://*/*",
    "clipboardWrite",
    "menus",
    "nativeMessaging",
    "notifications"
  ],
  "background": {
    "scripts": [
      "context.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "context.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "commands": {
    "send-context": {
      "suggested_key": {
        "default": "Ctrl+Alt+K",
        "linux": "Ctrl+Alt+K",
        "windows": "Ctrl+Alt+K",
        "mac": "Command+Alt+K"
      },
      "description": "Send selected web-page context to OMP"
    }
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    },
    "default_popup": "popup.html",
    "default_title": "OMP Send Context; click to open controls"
  }
}