Examine source code of Chat ViewFlex

{
  "manifest_version": 2,
  "name": "Chat ViewFlex",
  "version": "0.6",
  "description": "Flexible conversation width control for Google Gemini, ChatGPT, and Claude",
  "browser_specific_settings": {
    "gecko": {
      "id": "{73b85aa0-1443-4d2e-84f0-bd54a3e41aa0}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "icons": {
    "48": "icons/chat-viewflex-48.png",
    "96": "icons/chat-viewflex-96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/chat-viewflex-48.png",
      "96": "icons/chat-viewflex-96.png"
    },
    "default_title": "Chat ViewFlex Settings",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gemini.google.com/*",
        "https://chatgpt.com/*",
        "https://chat.openai.com/*",
        "https://claude.ai/*"
      ],
      "js": [
        "chat-viewflex.js"
      ]
    }
  ]
}