Examine source code of ThreadNotes for Claude Chat

{
  "manifest_version": 3,
  "name": "ThreadNotes — Notes for each Claude.ai chat",
  "version": "5.1.0",
  "description": "A private, resizable side panel that keeps separate notes for every Claude.ai conversation. Notes stay on your device and can sync across your devices via your browser account — no sign-in setup. Markdown, search, export. Unofficial; not affiliated with Anthropic.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://claude.ai/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Toggle ThreadNotes (Alt+N)",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  },
  "commands": {
    "toggle-notes": {
      "suggested_key": {
        "default": "Alt+N"
      },
      "description": "Toggle the ThreadNotes panel"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://claude.ai/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "panel.html",
        "panel.js",
        "panel.css"
      ],
      "matches": [
        "https://claude.ai/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6907461d-3480-400d-a79d-913c54186023}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}