Examine source code of Threadmark

{
  "manifest_version": 3,
  "name": "Threadmark",
  "description": "Save and revisit important moments from your AI conversations.",
  "version": "1.0.6.1",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://chatgpt.com/*",
    "https://claude.ai/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://claude.ai/*"
      ],
      "js": [
        "src/storage.js",
        "src/hosts/claude.js",
        "src/hosts/index.js",
        "src/domUtils.js",
        "src/sidebar.js",
        "src/highlight.js",
        "src/contentScript.js"
      ],
      "css": [
        "styles/styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*.svg"
      ],
      "matches": [
        "https://chatgpt.com/*",
        "https://claude.ai/*"
      ]
    }
  ],
  "sidebar_action": {
    "default_panel": "sidebar.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png"
    },
    "default_title": "Threadmark"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "threadmark@gooduse.ai",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}