feat(frontend): add batch processing and review features

- Add batch processing API and mode
- Add deep read mode for full-text analysis
- Add document selector and switcher components
- Add review page with editorial and methodology assessment
- Add capacity indicator and usage info modal
- Add custom hooks for batch tasks and chat modes
- Update layouts and routing
- Add TypeScript types for chat features

frontend/src/types/chat.ts

@@ -0,0 +1,91 @@
+/**
+ * Phase 2: 聊天模式相关类型定义
+ */
+
+import { Document } from './index'
+
+/**
+ * 聊天基础模式
+ */
+export type ChatBaseMode = 'general' | 'knowledge_base'
+
+/**
+ * 知识库工作模式
+ */
+export type KnowledgeBaseMode = 'full_text' | 'deep_read' | 'batch'
+
+/**
+ * 聊天页面状态
+ */
+export interface ChatPageState {
+  // 基础模式
+  baseMode: ChatBaseMode
+  
+  // 知识库配置
+  selectedKbId?: string
+  kbMode?: KnowledgeBaseMode
+  
+  // 全文阅读模式状态
+  fullTextState?: FullTextModeState
+  
+  // 逐篇精读模式状态
+  deepReadState?: DeepReadModeState
+}
+
+/**
+ * 全文阅读模式状态
+ */
+export interface FullTextModeState {
+  loadedDocs: Document[]
+  totalFiles: number
+  selectedFiles: number
+  totalTokens: number
+  usedTokens: number
+  availableTokens: number
+  reason: 'all_included' | 'file_limit' | 'token_limit'
+}
+
+/**
+ * 逐篇精读模式状态
+ */
+export interface DeepReadModeState {
+  selectedDocs: Document[]
+  currentDocId: string
+  currentDoc?: Document
+  currentConversation: ChatMessage[]
+  conversationPerDoc: Map<string, ChatMessage[]>
+  totalTokens: number
+}
+
+/**
+ * 聊天消息
+ */
+export interface ChatMessage {
+  id: string
+  role: 'user' | 'assistant' | 'system'
+  content: string
+  timestamp: Date
+  metadata?: any
+}
+
+/**
+ * 文档选择结果（从API返回）
+ */
+export interface DocumentSelectionResult {
+  knowledgeBaseId: string
+  knowledgeBaseName: string
+  limits: {
+    maxFiles: number
+    maxTokens: number
+  }
+  selection: {
+    selectedCount: number
+    selectedTokens: number
+    excludedCount: number
+    availableTokens: number
+    reason: 'all_included' | 'file_limit' | 'token_limit'
+  }
+  selectedDocuments: Document[]
+  excludedDocuments: Document[]
+}
+