refactor: restructure server routing and add documentation routes

src/modes/server.rs

@@ -59,7 +59,7 @@ async fn run_server(
         args: Arc::new(args.clone()),
     };
     
-    let app = api::api_router()
+    let app = Router::new()
         .layer(axum::middleware::from_fn(logging_middleware))
         .layer(
             ServiceBuilder::new()