feat: 支持教学图鉴

packages/server/src/main.ts

@@ -1,4 +1,6 @@
 import { NestFactory } from '@nestjs/core'
+import { NestExpressApplication } from '@nestjs/platform-express'
+import { join } from 'path'
 import { Logger, ValidationPipe } from '@nestjs/common'
 import { ConfigService } from '@nestjs/config'
 import { WinstonModule } from 'nest-winston'
@@ -11,9 +13,20 @@ import { ApiExceptionFilter } from './common/filters/api-exception.filter'
 async function bootstrap() {
   const logger = WinstonModule.createLogger(loggerConfig)
 
-  const app = await NestFactory.create(AppModule, { logger })
+  const app = await NestFactory.create<NestExpressApplication>(AppModule, { logger })
   const configService = app.get(ConfigService)
 
+  // Public, dependency-free educational pages; keep them outside the JSON API prefix.
+  app.useStaticAssets(join(__dirname, '..', 'public', 'learn'), {
+    prefix: '/learn/',
+    index: 'index.html',
+    maxAge: 0,
+    setHeaders: (response) => {
+      response.setHeader('X-Content-Type-Options', 'nosniff')
+      response.setHeader('Referrer-Policy', 'strict-origin-when-cross-origin')
+    },
+  })
+
   app.setGlobalPrefix('api')
   app.useGlobalPipes(
     new ValidationPipe({