Examine source code of ChatGPT Ctrl+Enter Sender

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "2.0.0",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "author": "Kamada Masachika",
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt-ctrl-enter-sender@chatgpt-extension.io",
      "strict_min_version": "58.0"
    }
  },
  "permissions": [
    "storage",
    "https://chatgpt.com/*",
    "https://poe.com/*",
    "https://www.phind.com/*",
    "https://chat.mistral.ai/*",
    "https://www.perplexity.ai/*",
    "https://claude.ai/*",
    "https://you.com/*",
    "https://dashboard.cohere.com/playground/chat",
    "https://notebooklm.google.com/*",
    "https://gemini.google.com/*",
    "https://v0.dev/*",
    "https://chat.deepseek.com/*",
    "https://github.com/*",
    "https://grok.com/*",
    "https://copilot.microsoft.com/*",
    "https://m365.cloud.microsoft/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*"
      ],
      "js": [
        "content/ctrl-enter-utils.js",
        "content/ctrl-enter-chatgpt.js"
      ]
    },
    {
      "matches": [
        "https://poe.com/*",
        "https://chat.mistral.ai/*",
        "https://www.perplexity.ai/*",
        "https://you.com/*",
        "https://v0.dev/*",
        "https://dashboard.cohere.com/playground/chat",
        "https://copilot.microsoft.com/*"
      ],
      "js": [
        "content/ctrl-enter-utils.js",
        "content/ctrl-enter-textarea.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://claude.ai/*",
        "https://notebooklm.google.com/*",
        "https://gemini.google.com/*",
        "https://www.phind.com/*",
        "https://chat.deepseek.com/*",
        "https://github.com/*",
        "https://grok.com/*",
        "https://m365.cloud.microsoft/*"
      ],
      "js": [
        "content/ctrl-enter-utils.js",
        "content/ctrl-enter-custom-inputs.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "icon/icon16.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icon/icon16.png",
      "48": "icon/icon48.png",
      "128": "icon/icon128.png"
    }
  },
  "options_page": "options/options.html"
}