refactor: clean up unused barrel exports and standardize httpClient imports

Author: Shubhangi-Microsoft

content-gen/src/app/frontend/src/api/index.ts

@@ -10,6 +10,7 @@ import type {
   AppConfig,
 } from '../types';
 import httpClient from './httpClient';
+export { default as httpClient } from './httpClient';
 import { parseSSEStream, getGenerationStage } from '../utils';
 
 /**

content-gen/src/app/frontend/src/hooks/useConversationActions.ts

@@ -2,7 +2,7 @@ import { useCallback } from 'react';
 
 import type { ChatMessage, Product, CreativeBrief } from '../types';
 import { createMessage, buildGeneratedContent } from '../utils';
-import httpClient from '../api/httpClient';
+import { httpClient } from '../api';
 import {
   useAppDispatch,
   useAppSelector,

content-gen/src/app/frontend/src/store/chatHistorySlice.ts

@@ -4,7 +4,7 @@
  * Granular selectors for each piece of history state.
  */
 import { createSlice, createAsyncThunk, type PayloadAction } from '@reduxjs/toolkit';
-import httpClient from '../api/httpClient';
+import { httpClient } from '../api';
 
 export interface ConversationSummary {
   id: string;

content-gen/src/app/frontend/src/store/index.ts

@@ -15,7 +15,6 @@ export {
   toggleChatHistory,
   setShowChatHistory,
   GenerationStatus,
-  GENERATION_STATUS_LABELS,
 } from './appSlice';
 
 // Chat slice – actions
@@ -55,7 +54,6 @@ export {
   selectUserId,
   selectUserName,
   selectIsLoading,
-  selectGenerationStatus,
   selectGenerationStatusLabel,
   selectImageGenerationEnabled,
   selectShowChatHistory,

content-gen/src/app/frontend/src/utils/index.ts

@@ -15,7 +15,6 @@ export { parseSSEStream } from './sseParser';
 
 // Generation progress stages
 export { getGenerationStage } from './generationStages';
-export type { GenerationStage } from './generationStages';
 
 // Brief-field metadata
 export { BRIEF_FIELD_LABELS, BRIEF_DISPLAY_ORDER, BRIEF_FIELD_KEYS } from './briefFields';