备份：修复前完整项目快照 2026-04-19

backend/check-schema.js

@@ -0,0 +1,26 @@
+const db = require('./db-sqlite');
+
+// 检查customers表结构
+db.query('PRAGMA table_info(customers)').then(result => {
+  console.log('customers表结构:', result.rows);
+  
+  // 检查suppliers表结构
+  return db.query('PRAGMA table_info(suppliers)');
+}).then(result => {
+  console.log('suppliers表结构:', result.rows);
+  
+  // 检查subcontractors表结构
+  return db.query('PRAGMA table_info(subcontractors)');
+}).then(result => {
+  console.log('subcontractors表结构:', result.rows);
+  
+  // 检查projects表结构
+  return db.query('PRAGMA table_info(projects)');
+}).then(result => {
+  console.log('projects表结构:', result.rows);
+  
+  process.exit(0);
+}).catch(error => {
+  console.error('查询失败:', error);
+  process.exit(1);
+});