Refactor query message toast

apps/frontend/app/lib/QueryMessages.tsx

@@ -0,0 +1,20 @@
+import type { ReactNode } from 'react';
+
+export enum QueryMessageType {
+  Info = 'info',
+  Success = 'success',
+  Warning = 'warning',
+  Error = 'error',
+}
+
+export enum QueryMessageCode {
+  SessionExpired = 'SESSION_EXPIRED',
+  InitializationRequired = 'INITIALIZATION_REQUIRED',
+  InitializationSuccessful = 'INITIALIZATION_SUCCESSFUL',
+}
+
+export const CODE_TO_MESSAGE_MAP: Record<QueryMessageCode, ReactNode> = {
+  [QueryMessageCode.SessionExpired]: 'Your session has expired. Please log in again.',
+  [QueryMessageCode.InitializationRequired]: 'The application requires initialization. Please follow the setup instructions.',
+  [QueryMessageCode.InitializationSuccessful]: 'Initialization successful. Please log in.',
+} as const;