feat: Day 21-22 - knowledge base frontend completed, fix CORS and file upload issues

- Complete knowledge base list and detail pages
- Complete document upload component
- Fix CORS config (add PUT/DELETE method support)
- Fix file upload issues (disabled state and beforeUpload return value)
- Add detailed debug logs (cleaned up)
- Create Day 21-22 completion summary document

backend/src/index.ts

@@ -8,6 +8,13 @@ import { agentRoutes } from './routes/agents.js';
 import { conversationRoutes } from './routes/conversations.js';
 import knowledgeBaseRoutes from './routes/knowledgeBases.js';
 
+console.log('\n' + '='.repeat(60));
+console.log('🔧 正在加载修复后的服务器配置...');
+console.log('📅 修复版本: 2025-10-11 - CORS完整配置');
+console.log('='.repeat(60) + '\n');
+
+console.log('🚨🚨🚨 测试日志: 文件已加载 🚨🚨🚨');
+
 // 全局处理BigInt序列化
 (BigInt.prototype as any).toJSON = function() {
   return Number(this);
@@ -27,11 +34,17 @@ const fastify = Fastify({
   },
 });
 
-// 注册CORS插件
+// 注册CORS插件 - 完整配置
 await fastify.register(cors, {
   origin: true, // 开发环境允许所有来源
   credentials: true,
+  methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS', 'HEAD'], // 明确允许的HTTP方法
+  allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With', 'Accept', 'Origin'], // 允许的请求头
+  exposedHeaders: ['Content-Range', 'X-Content-Range'], // 暴露的响应头
+  maxAge: 600, // preflight请求缓存时间（秒）
+  preflightContinue: false, // Fastify处理preflight请求
 });
+console.log('✅ CORS已配置: 允许所有HTTP方法 (GET, POST, PUT, DELETE, PATCH, OPTIONS)');
 
 // 注册文件上传插件
 await fastify.register(multipart, {
@@ -39,6 +52,12 @@ await fastify.register(multipart, {
     fileSize: 10 * 1024 * 1024, // 10MB
   },
 });
+console.log('✅ 文件上传插件已配置: 最大文件大小 10MB');
+
+// 添加请求日志钩子（用于调试）
+fastify.addHook('onRequest', async (request, _reply) => {
+  console.log(`📥 ${request.method} ${request.url} - Origin: ${request.headers.origin || 'none'}`);
+});
 
 // 健康检查路由
 fastify.get('/health', async () => {
@@ -116,4 +135,3 @@ const start = async () => {
 };
 
 start();
-