fix(arch-scan): 修复多语言扫描器并添加 DELETE 清空表

- scanner.ts: 添加 DELETE 清空旧数据语句，避免重复插入
- ts-scanner: 改用 regex 替代 ts-morph 解析（避免解析失败）
- go-scanner/py-scanner/proto-scanner: 完善实现

scripts/arch-scan/scanner.ts

@@ -1,17 +1,22 @@
 #!/usr/bin/env tsx
-import { createDb } from './schema.js';
-import { scanTypeScript } from './scanners/ts-scanner.js';
-import { scanGo } from './scanners/go-scanner.js';
-import { scanPython } from './scanners/py-scanner.js';
-import { scanProtobuf } from './scanners/proto-scanner.js';
-import path from 'node:path';
+import { createDb } from "./schema.js";
+import { scanTypeScript } from "./scanners/ts-scanner.js";
+import { scanGo } from "./scanners/go-scanner.js";
+import { scanPython } from "./scanners/py-scanner.js";
+import { scanProtobuf } from "./scanners/proto-scanner.js";
+import path from "node:path";
 
 const ROOT = process.cwd();
 
 function main(): void {
-  const db = createDb(path.join(ROOT, 'arch.db'));
+  const db = createDb(path.join(ROOT, "arch.db"));
 
-  console.log('🔍 arch-scan: 开始多语言扫描...');
+  // 清空旧数据（避免重跑产生重复符号）
+  db.exec(
+    "DELETE FROM calls; DELETE FROM dependencies; DELETE FROM symbols; DELETE FROM contracts; DELETE FROM events; DELETE FROM modules;",
+  );
+
+  console.log("🔍 arch-scan: 开始多语言扫描...");
 
   // 串行扫描（并行会导致 FOREIGN KEY 错误）
   const tsStats = scanTypeScript(db, ROOT);
@@ -26,8 +31,8 @@ function main(): void {
   const protoStats = scanProtobuf(db, ROOT);
   console.log(`  Protobuf: ${protoStats.contracts} 契约`);
 
-  console.log('✅ arch-scan 完成');
+  console.log("✅ arch-scan 完成");
   db.close();
 }
 
-main();
+main();