fix: 工作流完整性和协调性修复

修复 6 个问题：
1. 新一轮对话清理上轮工具卡片和终端输出（避免越积越多）
2. 中止 Agent Loop 时保留已执行的工具记录（不再丢失）
3. 切换历史会话时清理工作空间状态
4. handleRetry 保存 think 内容（之前丢失）
5. 中止流程统一：agent-engine 抛出 AbortError 由消费方处理（消除重复消息风险）
6. 导出 clearToolCardsExternal/clearTerminalExternal 供外部调用

src/renderer/components/history-modal.ts

@@ -5,6 +5,7 @@
 import { state, KEYS } from '../state/state.js';
 import { debounce, escapeHtml, formatTime } from '../utils/utils.js';
 import { exportAsMarkdown, exportAsHtml, exportAsTxt, renderMessages, clearMessages, updateTotalTokens } from './chat-area.js';
+import { clearToolCardsExternal, clearTerminalExternal } from './workspace-panel.js';
 import { showConfirm } from './prompt-modal.js';
 import { ChatDB } from '../db/chat-db.js';
 import { logSession, logWarn } from '../services/log-service.js';
@@ -179,6 +180,10 @@ async function loadHistorySession(sessionId: string): Promise<void> {
   (document.querySelector('#historyBar') as HTMLElement).style.display = '';
   (document.querySelector('#inputArea') as HTMLElement).style.display = 'none';
 
+  // 切换会话时清理工作空间状态
+  clearToolCardsExternal();
+  clearTerminalExternal();
+
   clearMessages();
   renderMessages();
   updateTotalTokens();

src/renderer/components/input-area.ts

@@ -12,7 +12,7 @@ import {
   appendToolCallCardToPlaceholder, updateToolCallCardInPlaceholder
 } from './chat-area.js';
 import { showToast } from './toast.js';
-import { addToolCard, updateToolCard } from './workspace-panel.js';
+import { addToolCard, updateToolCard, clearToolCardsExternal, clearTerminalExternal } from './workspace-panel.js';
 import { ChatDB } from '../db/chat-db.js';
 import { OllamaAPI } from '../api/ollama.js';
 import { runAgentLoop } from '../services/agent-engine.js';
@@ -266,6 +266,12 @@ async function handleRetry(): Promise<void> {
   const toolCallingEnabled = state.get<boolean>('toolCallingEnabled', false);
   const model = getSelectedModel() || currentSession.model;
 
+  // 新一轮开始：清理上一轮的工作空间状态
+  if (toolCallingEnabled) {
+    clearToolCardsExternal();
+    clearTerminalExternal();
+  }
+
   appendAssistantPlaceholder();
   state.set(KEYS.IS_STREAMING, true);
   updateSendButton(true);
@@ -285,9 +291,10 @@ async function handleRetry(): Promise<void> {
       });
 
     try {
+      let retryThinkContent = '';
       await runAgentLoop(userMsg.content || '', userMsg.images || [], historyMessages, {
-        onThinking: (thinking) => updateLastAssistantMessage('', thinking, null),
-        onContent: (content) => updateLastAssistantMessage(content, null, null),
+        onThinking: (thinking) => { retryThinkContent = thinking; updateLastAssistantMessage('', thinking, null); },
+        onContent: (content) => updateLastAssistantMessage(content, retryThinkContent || null, null),
         onToolCallStart: (call) => {
           addToolCard({
             name: call.function.name, arguments: call.function.arguments,
@@ -310,6 +317,7 @@ async function handleRetry(): Promise<void> {
         onDone: async (finalContent, toolRecords, loopStats) => {
           const assistantMsg: ChatMessage = {
             role: 'assistant', content: finalContent || '', timestamp: Date.now(),
+            ...(retryThinkContent && { think: retryThinkContent }),
             ...(toolRecords?.length && { toolCalls: toolRecords }),
             ...(loopStats?.eval_count && { eval_count: loopStats.eval_count }),
             ...(loopStats?.total_duration && { total_duration: loopStats.total_duration }),
@@ -317,7 +325,7 @@ async function handleRetry(): Promise<void> {
           state.update(KEYS.CURRENT_SESSION, (s: ChatSession | null) => ({
             ...s, messages: [...s.messages, assistantMsg], updatedAt: Date.now()
           }));
-          updateLastAssistantMessage(finalContent, null, loopStats || null);
+          updateLastAssistantMessage(finalContent, retryThinkContent || null, loopStats || null);
           renderMessages();
           await saveCurrentSession();
           updateTotalTokens();
@@ -856,6 +864,10 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
   filePreviewEl.innerHTML = '';
   autoResizeTextarea();
 
+  // 新一轮开始：清理上一轮的工作空间状态
+  clearToolCardsExternal();
+  clearTerminalExternal();
+
   appendAssistantPlaceholder();
   state.set(KEYS.IS_STREAMING, true);
   updateSendButton(true);
@@ -951,11 +963,16 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
           contentDiv.innerHTML = html;
         }
       }
+      // 获取中止时已执行的工具记录
+      const abortToolRecords = state.get<ToolCallRecord[] | null>('_abortToolRecords', null);
+      if (abortToolRecords) state.set('_abortToolRecords', null);
+
       const partialMsg: ChatMessage = {
         role: 'assistant',
         content: assistantContent,
         timestamp: Date.now(),
         ...(thinkContent && { think: thinkContent }),
+        ...(abortToolRecords?.length && { toolCalls: abortToolRecords }),
         stopped: true
       };
       state.update(KEYS.CURRENT_SESSION, (session: ChatSession | null) => ({

src/renderer/components/workspace-panel.ts

@@ -63,6 +63,25 @@ const IDLE_TIPS = [
 let tipIndex = Math.floor(Math.random() * IDLE_TIPS.length);
 let tipTimer: ReturnType<typeof setInterval> | null = null;
 
+/** 清空工具卡片（供外部调用） */
+export function clearToolCardsExternal(): void {
+  toolCards = [];
+  if (activeTab === 'tools') renderToolCalls();
+  updateToolsHint();
+}
+
+/** 清空终端（供外部调用） */
+export function clearTerminalExternal(): void {
+  if (terminal) {
+    terminal.lines = [];
+    terminal.running = false;
+  }
+  currentAiCommand = null;
+  if (activeTab === 'terminal') renderTerminal();
+  updateStopBtnState();
+  updateHint();
+}
+
 /** 工具调用卡片列表 */
 let toolCards: ToolCallRecord[] = [];
 let toolAutoScroll = true;

src/renderer/services/agent-engine.ts

@@ -518,8 +518,10 @@ export async function runAgentLoop(
     // 检查是否已中止
     if (state.get<AbortController | null>(KEYS.ABORT_CONTROLLER)?.signal.aborted) {
       logInfo('ReAct Agent Loop 已中止');
-      callbacks.onDone(content, allToolRecords.length > 0 ? allToolRecords : undefined, makeStats());
-      return;
+      if (allToolRecords.length > 0) {
+        state.set('_abortToolRecords', allToolRecords);
+      }
+      throw new DOMException('Aborted', 'AbortError');
     }
 
     logAgentLoop(loopCount, maxLoops);
@@ -591,11 +593,11 @@ export async function runAgentLoop(
     } catch (err) {
       if (abortController.signal.aborted) {
         logInfo('流式调用已中止');
-        if (content || thinking) {
-          messages.push({ role: 'assistant', content, ...(thinking && { thinking }) });
+        // 保存工具记录到 state，供消费方的 catch 处理中止消息
+        if (allToolRecords.length > 0) {
+          state.set('_abortToolRecords', allToolRecords);
         }
-        callbacks.onDone(content, allToolRecords.length > 0 ? allToolRecords : undefined, makeStats());
-        return;
+        throw err; // 抛出 AbortError，由消费方统一处理
       }
       logError('流式调用异常', (err as Error).message);
       // 清理预算警告临时消息