fix: initialize default error rules on application startup

- Add automatic initialization of 7 default error rules after database migration
- Ensure idempotent insertion using ON CONFLICT DO NOTHING strategy
- Apply to both production and development environments
- Fix issue where error rules page showed empty list despite having default rules in code

Default rules cover:
- Prompt token limit exceeded
- Content blocked by safety filters
- PDF page limit exceeded
- Invalid thinking block format
- Request parameter validation failed
- Invalid request format
- Cache control limit exceeded

src/instrumentation.ts

@@ -36,6 +36,15 @@ export async function register() {
       const { ensurePriceTable } = await import("@/lib/price-sync/seed-initializer");
       await ensurePriceTable();
 
+      // 初始化默认错误规则
+      const { initializeDefaultErrorRules } = await import("@/repository/error-rules");
+      try {
+        await initializeDefaultErrorRules();
+        logger.info("Default error rules initialized successfully");
+      } catch (error) {
+        logger.error("Failed to initialize default error rules:", error);
+      }
+
       // 初始化日志清理任务队列（如果启用）
       const { scheduleAutoCleanup } = await import("@/lib/log-cleanup/cleanup-queue");
       await scheduleAutoCleanup();
@@ -63,6 +72,15 @@ export async function register() {
       const { ensurePriceTable } = await import("@/lib/price-sync/seed-initializer");
       await ensurePriceTable();
 
+      // 初始化默认错误规则
+      const { initializeDefaultErrorRules } = await import("@/repository/error-rules");
+      try {
+        await initializeDefaultErrorRules();
+        logger.info("Default error rules initialized successfully");
+      } catch (error) {
+        logger.error("Failed to initialize default error rules:", error);
+      }
+
       // ⚠️ 开发环境禁用通知队列（Bull + Turbopack 不兼容）
       // 通知功能仅在生产环境可用，开发环境需要手动测试
       logger.warn(