refactor: 视频提取日志原地更新，复用 logStreamProgress 模式

- 新增 resetVideoProgress/updateVideoProgress/finishVideoProgress
- 日志面板中视频提取只占一条，实时更新帧数和状态
- 主进程只通过 video:progress IPC 推送原始帧数，不写日志

src/main/ipc.ts

@@ -544,9 +544,6 @@ function extractVideoFrames(filePath: string, maxFrames: number, maxWidth: numbe
     try {
       await fs.promises.mkdir(tmpDir, { recursive: true });
 
-      const fileName = path.basename(filePath);
-      sendLog('info', `🎬 开始提取视频帧: 1fps`, fileName);
-
       // ffmpeg 提取帧：1fps，同时捕获 stderr 解析进度和视频信息
       const outPattern = path.join(tmpDir, 'frame_%04d.jpg');
       let ffmpegStderr = '';
@@ -618,7 +615,6 @@ function extractVideoFrames(filePath: string, maxFrames: number, maxWidth: numbe
 
       await fs.promises.rm(tmpDir, { recursive: true, force: true });
 
-      sendLog('success', `🎬 视频帧提取完成: 1fps`, `${filePath} → ${frames.length} 帧 / ${videoInfo.duration.toFixed(1)}s (${videoInfo.width}x${videoInfo.height})`);
       resolve({ success: true, frames, videoInfo });
 
     } catch (err) {

src/renderer/components/input-area.ts

@@ -19,7 +19,7 @@ import { runAgentLoop } from '../services/agent-engine.js';
 import { estimateTokens } from '../services/context-manager.js';
 import { searchMemories, buildMemoryContext, markMemoryUsed, extractMemoriesFromConversation, isMemoryEnabled } from '../services/memory-manager.js';
 import { showToolConfirm } from './tool-confirm-modal.js';
-import { logInfo, logStream, logError, logSuccess, logWarn } from '../services/log-service.js';
+import { logInfo, logStream, logError, logSuccess, logWarn, resetVideoProgress, updateVideoProgress, finishVideoProgress } from '../services/log-service.js';
 import type { ChatSession, ChatMessage, OllamaStreamChunk, FileContent, ChatFile, ToolCallRecord } from '../types.js';
 
 let chatInputEl: HTMLTextAreaElement;
@@ -252,13 +252,15 @@ async function handleVideoPath(filePath: string): Promise<void> {
 
   const name = filePath.split(/[/\\]/).pop() || filePath;
 
-  // 先显示提取中的预览卡片
+  // 先显示提取中的预览卡片 + 日志进度条目
   pendingVideoMeta = { fileName: name, duration: 0, width: 0, height: 0 };
   renderVideoPreview();
+  resetVideoProgress(name);
 
-  // 监听提取进度，实时更新卡片
+  // 监听提取进度：实时更新日志条目 + 视频芯片
   let progressEl: HTMLElement | null = null;
   bridge.video.onProgress(({ current }) => {
+    updateVideoProgress(current);
     if (!progressEl) progressEl = videoPreviewEl.querySelector('.video-meta');
     if (progressEl) progressEl.textContent = `提取中 · ${current}帧`;
   });
@@ -271,25 +273,22 @@ async function handleVideoPath(filePath: string): Promise<void> {
       pendingVideoFrames = [];
       pendingVideoMeta = null;
       renderVideoPreview();
-      appendSystemMessage(`❌ 视频帧提取失败: ${result.error}`);
+      logError('视频帧提取失败', result.error || '');
       return;
     }
 
     pendingVideoFrames = result.frames!;
     pendingVideoMeta = { fileName: name, ...result.videoInfo! };
 
-    logInfo(`视频帧提取完成: ${name}`, 
-      `${pendingVideoFrames.length} 帧 (1fps, ${pendingVideoMeta.duration.toFixed(0)}s)`);
-    appendSystemMessage(`✅ ${name}: 已提取 ${pendingVideoFrames.length} 帧 (1fps 采样)`);
-
+    // 完成：日志条目原地更新为 success（不新增）
+    finishVideoProgress(name, pendingVideoFrames.length, pendingVideoMeta.duration);
     renderVideoPreview();
   } catch (err) {
     bridge.video.removeProgressListener();
     pendingVideoFrames = [];
     pendingVideoMeta = null;
     renderVideoPreview();
-    logError('视频帧提取异常', (err as Error).message);
-    appendSystemMessage(`❌ 视频处理失败: ${(err as Error).message}`);
+    logError('视频帧提取失败', (err as Error).message);
   }
 }
 

src/renderer/services/log-service.ts

@@ -187,7 +187,6 @@ export function resetStreamProgress(): void {
 
 /** 更新**最新**一条流式进度日志（原地更新消息，不改变 DOM 位置和时间戳） */
 export function logStreamProgress(msg: string): void {
-  // 找最后一条进度日志（当前轮）
   const all = logBodyEl?.querySelectorAll?.('.log-stream-progress');
   if (all && all.length > 0) {
     const latest = all[all.length - 1] as HTMLElement;
@@ -196,6 +195,40 @@ export function logStreamProgress(msg: string): void {
   }
 }
 
+/** 视频提取进度：创建初始条目 */
+export function resetVideoProgress(fileName: string): void {
+  if (!logBodyEl) return;
+  const entry = document.createElement('div');
+  entry.className = 'log-entry log-info log-video-progress';
+  entry.innerHTML = `<span class="log-time">${formatTime(Date.now())}</span><span class="log-icon">🎬</span><span class="log-msg">开始提取视频帧: ${escapeHtml(fileName)}</span><pre class="log-detail">0 帧</pre>`;
+  logBodyEl.appendChild(entry);
+}
+
+/** 更新视频提取进度（原地更新，不新增条目） */
+export function updateVideoProgress(current: number): void {
+  const all = logBodyEl?.querySelectorAll?.('.log-video-progress');
+  if (all && all.length > 0) {
+    const latest = all[all.length - 1] as HTMLElement;
+    const detail = latest.querySelector('.log-detail');
+    if (detail) detail.textContent = `${current} 帧`;
+  }
+}
+
+/** 视频提取完成：将进度条目原地更新为完成状态 */
+export function finishVideoProgress(fileName: string, frameCount: number, duration: number): void {
+  const all = logBodyEl?.querySelectorAll?.('.log-video-progress');
+  if (all && all.length > 0) {
+    const latest = all[all.length - 1] as HTMLElement;
+    latest.className = 'log-entry log-success';
+    const icon = latest.querySelector('.log-icon');
+    const msg = latest.querySelector('.log-msg');
+    const detail = latest.querySelector('.log-detail');
+    if (icon) icon.textContent = '✅';
+    if (msg) msg.textContent = `视频帧提取完成: ${escapeHtml(fileName)}`;
+    if (detail) detail.textContent = `${frameCount} 帧 / ${duration.toFixed(1)}s (1fps)`;
+  }
+}
+
 export function logAgentLoop(iteration: number, maxLoops: number): void { addLog('info', `Loop #${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); }