fix: restore post-v1.1.14 features while preserving asset updates

Undo the full-tree rollback in 6ea1b3d and restore the pre-rollback v1.2.0 code. Preserve the new asset flow rules, abnormal inventory separation, range drilldowns and date picker; adapt the regression test to the restored routes layout.

src/server/index.ts

@@ -1,15 +1,15 @@
 import { serve } from '@hono/node-server';
-import dotenv from 'dotenv';
 import { createApp } from './app.js';
 import { startBackgroundServices } from './bootstrap.js';
+import { assertRuntimeConfig, serverConfig } from './config.js';
 
-dotenv.config();
+// 配置错误在启动期暴露，而不是等到第一次请求才 500。
+assertRuntimeConfig();
 
 const app = createApp();
-const port = Number(process.env.SERVER_PORT) || 3001;
 
-console.log(`Server starting on port ${port}...`);
+console.log(`Server starting on port ${serverConfig.port}...`);
 startBackgroundServices();
-serve({ fetch: app.fetch, port }, () => {
-  console.log(`Server running at http://localhost:${port}`);
+serve({ fetch: app.fetch, port: serverConfig.port }, () => {
+  console.log(`Server running at http://localhost:${serverConfig.port}`);
 });