fix: 流式日志原地更新 + 滚动用scrollIntoView

- 新增 logStreamProgress：同一ID日志更新不追加
- 定时器15s间隔，无新内容用累积闲置时长
- appendToolCardDOM 用 scrollIntoView + rAF
- renderToolCalls 用双重 rAF 等布局稳定

src/renderer/components/workspace-panel.ts

@@ -833,7 +833,7 @@ function appendToolCardDOM(tc: ToolCallRecord): void {
     container.appendChild(card);
     // 等浏览器完成布局后再滚到底部
     requestAnimationFrame(() => {
-      container.scrollTop = container.scrollHeight;
+      container.lastElementChild?.scrollIntoView({ block: 'end' });
     });
   }
 }
@@ -938,9 +938,11 @@ function renderToolCalls(): void {
     html += renderToolCard(tc);
   }
   container.innerHTML = html;
-  // 等浏览器完成布局后再滚到底部
+  // 全量重建后等两帧让布局稳定，再滚到底部
   requestAnimationFrame(() => {
-    container.scrollTop = container.scrollHeight;
+    requestAnimationFrame(() => {
+      container.lastElementChild?.scrollIntoView({ block: 'end' });
+    });
   });
 }
 

src/renderer/services/agent-engine.ts

@@ -15,7 +15,7 @@ import {
 import { searchMemories, buildMemoryContext, markMemoryUsed, isMemoryEnabled } from './memory-manager.js';
 import { extractSkillsFromToolRecords, matchSkills, buildSkillContext } from './skill-manager.js';
 import { showToast } from '../components/toast.js';
-import { logInfo, logWarn, logSuccess, logError, logToolStart, logToolResult, logAgentLoop, logModelResponse, logStream } from './log-service.js';
+import { logInfo, logWarn, logSuccess, logError, logToolStart, logToolResult, logAgentLoop, logModelResponse, logStreamProgress } from './log-service.js';
 import { getWorkspaceDirPath } from '../components/workspace-panel.js';
 import { generateId } from '../utils/utils.js';
 import { buildContext, estimateTokens, shouldAutoCompress, compressWithLLM, AUTO_COMPRESS_THRESHOLD, recordActualTokens } from './context-manager.js';
@@ -729,12 +729,12 @@ Shell: ${osInfo.shell}
           // 有新增内容 → 正常进度
           lastLoggedLen = content.length;
           lastContentTime = Date.now();
-          logStream(`流式输出中… ${content.length} 字 / ${sec}s${toolCalls.length > 0 ? ` [${toolCalls.length} 个工具调用]` : ''}`);
+          logStreamProgress(`流式输出中… ${content.length} 字 / ${sec}s${toolCalls.length > 0 ? ` [${toolCalls.length} 个工具调用]` : ''}`);
         } else if (content.length > 0) {
           // 内容不变 → 计算真正的无新内容时长
           const idleSec = Math.round((Date.now() - lastContentTime) / 1000);
           if (idleSec >= 10) {
-            logStream(`⚠️ ${idleSec}s 无新内容，当前 ${content.length} 字`);
+            logStreamProgress(`⚠️ ${idleSec}s 无新内容，当前 ${content.length} 字`);
           }
         }
       }, PROGRESS_INTERVAL);

src/renderer/services/log-service.ts

@@ -175,6 +175,26 @@ export function logThink(thinking: string): void {
 }
 
 export function logStream(msg: string): void { addLog('stream', msg); }
+
+/** 更新流式进度日志（原地更新，不追加新条目） */
+export function logStreamProgress(msg: string): void {
+  if (!logBodyEl) { addLog('stream', msg); return; }
+  const existing = document.getElementById('log-stream-progress');
+  if (existing) {
+    // 更新已有条目
+    const timeSpan = existing.querySelector('.log-time');
+    if (timeSpan) timeSpan.textContent = formatTime(Date.now());
+    const msgSpan = existing.querySelector('.log-msg');
+    if (msgSpan) msgSpan.textContent = msg;
+  } else {
+    // 创建新条目 — 直接 addLog 然后手动修改 id
+    addLog('stream', msg);
+    // 最后一个日志条目就是我们刚加的
+    const lastEntry = logBodyEl.querySelector('.log-stream:last-of-type');
+    if (lastEntry) lastEntry.id = 'log-stream-progress';
+  }
+}
+
 export function logAgentLoop(iteration: number, maxLoops: number): void { addLog('info', `Loop #${iteration}/${maxLoops}`); }
 export function logModelResponse(contentLen: number, toolCalls: number): void { addLog('stream', `响应: ${contentLen}字, ${toolCalls}工具`); }
 export function logConnection(status: string, detail?: string): void { addLog(status === 'connected' ? 'success' : 'warn', `连接: ${status}`, detail); }