feat: initialize zhixing-web with React, React Router, and Tailwind CSS

- Set up the main application structure with App component and routing.
- Implemented global state management for UI theme using Zustand.
- Created API utilities for fetching system status.
- Developed system status page with responsive design and theme toggle.
- Added testing setup with Vitest and initial tests for system status page.
- Configured TypeScript with appropriate settings for the application.
- Integrated Tailwind CSS for styling and responsive design.
- Established Vite configuration for development and testing environments.

zhixing-server/src/zhixing_server/bootstrap/app.py

@@ -0,0 +1,19 @@
+"""FastAPI application factory."""
+
+from fastapi import FastAPI
+
+from zhixing_server.bootstrap.config import get_settings
+from zhixing_server.interfaces.http.router import api_v1_router, operational_router
+
+
+def create_app() -> FastAPI:
+    """Compose the HTTP application without leaking FastAPI into domain modules.
+
+    Returns:
+        A configured FastAPI application instance.
+    """
+    settings = get_settings()
+    application = FastAPI(title=settings.app_name)
+    application.include_router(operational_router)
+    application.include_router(api_v1_router)
+    return application