feat: bidirectional daily auto-transfer with position skip

Rebalance swap to AUTO_TRANSFER_AMOUNT at Beijing hour: top up from funding or sweep excess back. Skip and WeChat notify when active positions exist.

Co-authored-by: Cursor <cursoragent@cursor.com>

crypto_monitor_binance/templates/index.html

@@ -426,7 +426,7 @@
                 ｜移动保本：下单可勾选关闭；开启时 {{ breakeven_rr_trigger }}R 触发（每 1R 阶梯上移），偏移 {{ breakeven_offset_pct }}%
             </div>
             <div class="rule-tip">
-                划转：自动划转 {{ '开启' if auto_transfer_enabled else '关闭' }}（每天<strong>北京时间 {{ auto_transfer_bj_hour }}:00</strong>起该整点小时内尝试；账簿按 <strong>UTC 自然日</strong>去重；界面时间为北京；将 {{ auto_transfer_to }} 补足到 {{ auto_transfer_amount }}U，来自 {{ auto_transfer_from }}）
+                划转：自动划转 {{ '开启' if auto_transfer_enabled else '关闭' }}（每天<strong>北京时间 {{ auto_transfer_bj_hour }}:00</strong>起该整点小时内尝试；账簿按 <strong>UTC 自然日</strong>去重；将 {{ auto_transfer_to }} 调整至 {{ auto_transfer_amount }}U：不足从 {{ auto_transfer_from }} 划入、超出划回 {{ auto_transfer_from }}；<strong>持仓中不划转</strong>并微信通知）
             </div>
             <form action="/manual_transfer" method="post" class="form-row">
                 <input name="amount" type="number" min="0.01" step="0.01" placeholder="手动划转金额U" required>