Examine source code of LightSession Pro for ChatGPT

{
  "manifest_version": 3,
  "name": "LightSession Pro for ChatGPT",
  "version": "1.7.5",
  "description": "Keep ChatGPT fast by keeping only the last N messages in the DOM. Local-only.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "LightSession Pro",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "*://chat.openai.com/*",
    "*://chatgpt.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*"
      ],
      "js": [
        "dist/page-inject.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*"
      ],
      "js": [
        "dist/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "dist/page-script.js",
        ".dev"
      ],
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "lightsession@example.com",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}