feat(sprint1): 新增每日配额定时重置任务 (ScheduledTasks resetDailyQuota)

num-server/src/main/java/com/etotem/num/service/ScheduledTasks.java

@@ -0,0 +1,29 @@
+package com.etotem.num.service;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+/**
+ * 系统定时任务容器。
+ * 集中管理所有 @Scheduled 任务，避免分散在多个 Service 中难以维护。
+ */
+@Component
+public class ScheduledTasks {
+
+    private static final Logger log = LoggerFactory.getLogger(ScheduledTasks.class);
+
+    private final QuotaService quotaService;
+
+    public ScheduledTasks(QuotaService quotaService) { this.quotaService = quotaService; }
+
+    /**
+     * 每日 00:00 重置所有用户咨询配额（chat_count_today = 0）。
+     */
+    @Scheduled(cron = "0 0 0 * * ?")
+    public void resetDailyQuota() {
+        int affected = quotaService.resetDailyQuota();
+        log.info("[Scheduled] 每日配额重置完成，影响 {} 条记录", affected);
+    }
+}