备份：PWA配置前的完整版本

包含所有最新开发的功能和修复，作为PWA正确配置前的备份点。

backend/app.js

@@ -40,6 +40,7 @@ app.use('/api/products', require('./routes/products'));
 app.use('/api/customers', require('./routes/customers'));
 app.use('/api/suppliers', require('./routes/suppliers'));
 app.use('/api/subcontractors', require('./routes/subcontractors'));
+app.use('/api/project-receipts', require('./routes/project-receipts'));
 app.use('/api/projects', require('./routes/projects'));
 app.use('/api/upload', require('./routes/upload'));
 app.use('/api/construction', require('./routes/construction'));
@@ -69,6 +70,7 @@ app.use('/api/process-templates', require('./routes/process-templates'));
 app.use('/api/receiving', require('./routes/receiving'));
 app.use('/api/expense-categories', require('./routes/expense-categories'));
 app.use('/api/financial-records', require('./routes/financial-records'));
+app.use('/api/cash-management', require('./routes/cash-management'));
 
 app.get('*', (req, res) => {
   res.sendFile(path.join(__dirname, '../frontend/dist/index.html'));