Examine source code of Claude Chinese Bridge

{
  "manifest_version": 3,
  "name": "Claude Chinese Bridge",
  "version": "0.1.0",
  "description": "Type Chinese in the Firefox sidebar, send English to Claude, and watch Claude replies live.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "claude-chinese-bridge@xavier.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "sidebar_action": {
    "default_title": "Claude Bridge",
    "default_panel": "sidepanel.html"
  },
  "action": {
    "default_title": "Claude Bridge",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://claude.ai/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "host_permissions": [
    "https://claude.ai/*",
    "<all_urls>"
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ]
}