Add 期期 close mode (全平/到期平) with scheme-C env toggle.

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

lib/hedge_plan/templates/hedge_plan_panel.html

@@ -4,6 +4,7 @@
      data-options-enabled="{{ '1' if options_enabled else '0' }}"
      data-show-perp="{{ '1' if hedge_plan_show_perp_options | default(true) else '0' }}"
      data-show-oo="{{ '1' if hedge_plan_show_options_options | default(true) else '0' }}"
+     data-oo-close-mode-enabled="{{ '1' if hedge_plan_oo_close_mode_enabled | default(true) else '0' }}"
      data-sizing-mode="{{ position_sizing_mode | default('risk') }}"
      data-is-full-margin="{{ '1' if position_sizing_mode == 'full_margin' else '0' }}">
   {% if not hedge_plan_enabled %}
@@ -143,6 +144,12 @@
           <button type="button" class="btn-secondary hp-oo-size-mode active" data-oo-size="same_sheets">同张数</button>
           <button type="button" class="btn-secondary hp-oo-size-mode" data-oo-size="split_budget">均分预算</button>
         </div>
+        <div class="form-row hp-oo-size-row" id="hp-oo-close-mode-row">
+          <span class="muted" title="仅控制盈利腿平掉后的另一腿">平仓模式</span>
+          <button type="button" class="btn-secondary hp-oo-close-mode active" data-oo-close="close_all">全平</button>
+          <button type="button" class="btn-secondary hp-oo-close-mode" data-oo-close="hold_expiry">到期平</button>
+        </div>
+        <p class="muted" id="hp-oo-close-mode-hint">盈利腿平后:全平=立刻买一清另一腿(无2×,失败重试);到期平=另一腿持有至到期</p>
         <p class="muted" id="hp-oo-budget-line"></p>
         <div id="hp-oo-legs" class="hp-oo-legs">
           <div class="hp-oo-leg-row" data-leg="a">
@@ -270,4 +277,4 @@
     </div>
   </div>
 </div>
-<script src="/static/hedge_plan.js?v=15"></script>
+<script src="/static/hedge_plan.js?v=16"></script>