feat:代码变更diff可视化功能实现

src/services/toolExecutor.ts

@@ -8,6 +8,8 @@ import * as os from 'os';
 import * as fs from 'fs';
 import { readFileContent, readDirectory } from '../utils/readFiles';
 import { createOrOverwriteFile } from '../utils/createFiles';
+import { resolveWorkspaceFilePath, showFileDiff } from '../utils/fileDiff';
+import { changeTracker } from './changeTracker';
 import { generateVCD, checkIverilogAvailable, generateMultiVCD, DumpModule } from '../utils/iverilogRunner';
 import { analyzeVcdFile } from '../utils/vcdParser';
 import { executeWaveformTrace, WaveformTraceArgs } from '../utils/waveformTracer';
@@ -125,8 +127,19 @@ async function executeFileRead(args: FileReadArgs): Promise<string> {
  * 执行 file_write 工具
  */
 async function executeFileWrite(args: FileWriteArgs): Promise<string> {
+  const absolutePath = resolveWorkspaceFilePath(args.path);
+  const existedBeforeWrite = fs.existsSync(absolutePath);
+  const oldContent = existedBeforeWrite ? await readFileContent(args.path) : '';
+
   await createOrOverwriteFile(args.path, args.content);
 
+  // 记录文件变更
+  try {
+    changeTracker.trackChange(args.path, oldContent, args.content);
+  } catch (error) {
+    console.warn('[ToolExecutor] 记录文件变更失败:', error);
+  }
+
   // Verilog 文件添加知识图谱提示
   const isVerilogFile = args.path.endsWith('.v') || args.path.endsWith('.sv');
   if (isVerilogFile) {