Add options index target monitors that auto limit-close on hit.

Position and order forms can arm a target; right-side and hub panels show active monitors; expiry remains the stop with no separate SL.

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

lib/common/static/options_position_cards.js

@@ -113,7 +113,10 @@
       (p.upl_ratio_pct != null ? fmt(p.upl_ratio_pct, 2) + "%" : "—") + "</span></div>" +
       '<div class="pos-cell opt-pos-cell--depth"><span class="pos-label">买盘深度</span><span class="pos-value opt-bid-plain">' + fmtCloseLevels(closePreview, tickSz) + "</span></div>" +
       '<div class="pos-cell opt-pos-cell--close"><span class="pos-label">按买盘回收</span><span class="pos-value">' + fmtClosePreview(closePreview, p.premium_paid, hub) + "</span></div>" +
-      "</div>"
+      "</div>" +
+      (p.target_index != null
+        ? '<div class="opt-target-row opt-target-row--ro"><span class="opt-target-row-label">委托</span><span class="pos-value">目标指数 ' + fmt(p.target_index, 1) + "</span><span class="muted opt-target-row-hint">监控中 · 达价限价平</span></div>"
+        : "")
     );
   }