feat: 迁移 trading 相关脚本到 skill 仓库 (第2批: 🟡 中优先级)

【迁移内容】
- dividend-investing/scripts/dca_monitor.py + dca_monitor_us.sh
- dividend-scanner/scripts/scan_cn.{py,sh} + scan_hk.sh + scan_us.sh
- okx-auto-position/scripts/signal_queue_retry.sh
- lottery-hk/scripts/verify_lottery.sh
- longbridge-cli/scripts/longport_http.py (公共模块)

【配套修改】
- 5 个 cron 任务 script 路径更新 (jobs.json):
  - 8929ca09 (DCA港股上午) → dividend-investing/scripts/dca_monitor.py
  - 9469c128 (DCA港股下午) → dividend-investing/scripts/dca_monitor.py
  - 3a4bef2c (DCA美股凌晨) → dividend-investing/scripts/dca_monitor_us.sh
  - a82a3ab0 (signal-queue-retry) → okx-auto-position/scripts/
  - b4868849 (lottery-verify-result) → lottery-hk/scripts/

【删除】本地 ~/.hermes/scripts/{dca_monitor,scan_*,signal_queue_retry,verify_lottery,longport_http}
【未迁移】scan_cn/hk/us 仍需挂 cron, 暂不删 (走 scanner skill)

okx-auto-position/scripts/signal_queue_retry.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# 信号队列重试脚本 - 每5分钟检查一次待处理信号
+# 由 signal-queue-retry cron job 调用
+
+QUEUE_SCRIPT="$HOME/.hermes/skills/trading/okx-auto-position/scripts/signal_queue.py"
+PROCESS_SCRIPT="$HOME/.hermes/skills/trading/okx-auto-position/scripts/process_signal.py"
+DB="$HOME/.hermes/trading/signal_queue.db"
+
+# 检查是否有待处理信号
+if [ ! -f "$DB" ]; then
+    exit 0
+fi
+
+PENDING=$(sqlite3 "$DB" "SELECT COUNT(*) FROM queue WHERE status IN ('pending','failed') AND retries < 3")
+if [ "$PENDING" -eq 0 ]; then
+    exit 0
+fi
+
+# 有待处理信号，运行重试
+python3 "$QUEUE_SCRIPT" retry