feat: add employee management, backend health check, and UI improvements

server/src/app/main.py

@@ -7,6 +7,7 @@ from app.api.router import api_router
 from app.core.config import get_settings
 from app.core.logging import get_logger, setup_logging
 from app.middleware.logging import AccessLogMiddleware
+from app.services.employee import prepare_employee_directory
 
 
 def create_app() -> FastAPI:
@@ -48,8 +49,9 @@ def create_app() -> FastAPI:
 
     @app.on_event("startup")
     def _on_startup() -> None:
+        prepare_employee_directory()
         logger.info(
-            "Server ready — host=%s port=%s prefix=%s",
+            "Server ready - host=%s port=%s prefix=%s",
             settings.app_host,
             settings.app_port,
             settings.api_v1_prefix,