feat: 新增会话相关function calling调用

electron/main/worker/workerManager.ts

@@ -557,3 +557,64 @@ export interface ChatSessionItem {
 export async function getSessions(sessionId: string): Promise<ChatSessionItem[]> {
   return sendToWorker('getSessions', { sessionId })
 }
+
+// ==================== AI 工具专用查询函数 ====================
+
+/**
+ * 会话搜索结果项类型（用于 AI 工具）
+ */
+export interface SessionSearchResultItem {
+  id: number
+  startTs: number
+  endTs: number
+  messageCount: number
+  isComplete: boolean
+  previewMessages: Array<{
+    id: number
+    senderName: string
+    content: string | null
+    timestamp: number
+  }>
+}
+
+/**
+ * 搜索会话（用于 AI 工具）
+ */
+export async function searchSessions(
+  sessionId: string,
+  keywords?: string[],
+  timeFilter?: { startTs: number; endTs: number },
+  limit?: number,
+  previewCount?: number
+): Promise<SessionSearchResultItem[]> {
+  return sendToWorker('searchSessions', { sessionId, keywords, timeFilter, limit, previewCount })
+}
+
+/**
+ * 会话消息结果类型（用于 AI 工具）
+ */
+export interface SessionMessagesResult {
+  sessionId: number
+  startTs: number
+  endTs: number
+  messageCount: number
+  returnedCount: number
+  participants: string[]
+  messages: Array<{
+    id: number
+    senderName: string
+    content: string | null
+    timestamp: number
+  }>
+}
+
+/**
+ * 获取会话的完整消息（用于 AI 工具）
+ */
+export async function getSessionMessages(
+  sessionId: string,
+  chatSessionId: number,
+  limit?: number
+): Promise<SessionMessagesResult | null> {
+  return sendToWorker('getSessionMessages', { sessionId, chatSessionId, limit })
+}