Add key-level auto trade, AI analysis, and trading UX improvements.

Key monitors use 5m close triggers with WeChat alerts and box/convergence auto orders; add pending-order worker, structured WeChat notify, AI settings/messages, session clock, CTP margin sizing, and dual-layer position limits.

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

static/js/strategy.js

@@ -91,6 +91,10 @@
         if (preview.new_stop_loss != null) lines.push('新止损：' + preview.new_stop_loss);
         if (preview.total_lots != null) lines.push('合计手数：' + preview.total_lots);
         if (preview.worst_loss != null) lines.push('最坏亏损：' + preview.worst_loss + ' 元');
+        if (preview.margin_usage_pct != null) {
+            lines.push('滚仓后保证金占用：' + preview.margin_usage_pct + '%');
+        }
+        if (preview.margin_cap_note) lines.push(preview.margin_cap_note);
         if (preview.message) lines.push(preview.message);
         return lines.length ? lines.join('\n') : JSON.stringify(preview, null, 2);
     }