chore: regenerate barrel files for contexts and services

Add auto-generated barrel index files for auth, chat, sidebar, and user contexts, and update the services barrel with comprehensive exports for api, dto, and schema modules to streamline imports across the application.

src/models/auth/index.ts

@@ -0,0 +1,7 @@
+/**
+ * @file Automatically generated by barrelsby.
+ */
+
+export * from "./auth-mode";
+export * from "./auth-panel-mode";
+export * from "./login-type";

src/models/chat/index.ts

@@ -0,0 +1,6 @@
+/**
+ * @file Automatically generated by barrelsby.
+ */
+
+export * from "./chat-list-item";
+export * from "./ui-message";

src/models/user/index.ts

@@ -0,0 +1,5 @@
+/**
+ * @file Automatically generated by barrelsby.
+ */
+
+export * from "./user";