fix: 供应商账号拉取启动期大批失败 (启动推迟 30s + 同步切 100/批)

- @PostConstruct init() 加 Thread.sleep(30s), 避开启动期 Druid 首批物理连接未就绪导致全量失败
- sync() 改 100 条/批 + 批间 Thread.sleep(100ms), 让连接池稳定归还, 避免大批并发撑爆 Druid

Co-Authored-By: Claude Code <noreply@anthropic.com>

ry-api/ruoyi-business/src/main/java/com/ruoyi/business/scheduler/SupplierAccountPullScheduler.java

@@ -68,13 +68,15 @@ public class SupplierAccountPullScheduler
         return t;
     });
 
-    /** 启动后立即全量拉取 1 个月数据 (异步, 不阻塞 Spring 启动) */
+    /** 启动后推迟 30s 全量拉取 1 个月数据 (异步, 不阻塞 Spring 启动; 推迟避开启动期 Druid 池首批连接未就绪) */
     @PostConstruct
     public void init()
     {
         startupExecutor.submit(() -> {
             try
             {
+                // 启动期 Druid 首批物理连接未建好, 推迟 30s 让连接池就绪, 避免大批失败
+                Thread.sleep(30_000);
                 log.info("[SupplierAccountPull] 启动全量拉取开始 (近 {} 天)", fullPullDays());
                 pull(fullPullDays() * 24 * 60);
             }
@@ -142,11 +144,21 @@ public class SupplierAccountPullScheduler
                 fetched += size;
 
                 // 同步到执行方 sys_user / biz_org / biz_person (按邮箱 upsert)
+                // 切批 100 条/批, 批间 sleep 100ms 让连接池归还, 避免大批并发撑爆 Druid
                 if (size > 0)
                 {
                     List<SupplierAccount> accounts =
                             objectMapper.convertValue(rows, new TypeReference<List<SupplierAccount>>() {});
-                    supplierAccountSyncService.sync(accounts);
+                    final int BATCH = 100;
+                    for (int i = 0; i < accounts.size(); i += BATCH)
+                    {
+                        List<SupplierAccount> batch = accounts.subList(i, Math.min(i + BATCH, accounts.size()));
+                        supplierAccountSyncService.sync(batch);
+                        if (i + BATCH < accounts.size())
+                        {
+                            Thread.sleep(100);
+                        }
+                    }
                 }
                 log.info("[SupplierAccountPull] page={} total={} 本页={} 同步完成", pageNum, total, size);