Rename options UI label from 距平衡 to 平衡价差.

Clarifies the column shows strike-to-expiry-breakeven spread, not index distance.

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

lib/options/options_pricing_lib.py

@@ -526,7 +526,7 @@ def idx_distance_to_be(idx_px: float | None, be_px: float | None) -> float | Non
 
 
 def strike_distance_to_be(strike: float | None, be_px: float | None) -> float | None:
-    """行权价与到期平衡的价差(平衡价 - 行权价).链上「距平衡」列用此值."""
+    """行权价与到期平衡的价差(平衡价 - 行权价).链上「平衡价差」列用此值."""
     if strike is None or be_px is None:
         return None
     return round(float(be_px) - float(strike), 2)

lib/options/templates/options_panel.html

@@ -76,7 +76,7 @@
                             <th title="USDC:指数÷卖一;币本位:1÷卖一(卖一为币报价)">杠杆</th>
                             <th>买一/张</th>
                             <th>到期平衡</th>
-                            <th>距平衡</th>
+                            <th>平衡价差</th>
                             <th>操作</th>
                         </tr>
                         <tr id="opt-strike-head-t" class="hidden" hidden>
@@ -119,7 +119,7 @@
                                 <div><span class="k">预估权利金</span><span id="opt-order-premium" class="v">—</span></div>
                                 <div><span class="k">合约杠杆</span><span id="opt-order-leverage" class="v" title="名义价值÷权利金,测算用">—</span></div>
                                 <div><span class="k">到期平衡</span><span id="opt-order-expiry-be" class="v">—</span></div>
-                                <div><span class="k">距平衡</span><span id="opt-order-dist-be" class="v">—</span></div>
+                                <div><span class="k">平衡价差</span><span id="opt-order-dist-be" class="v">—</span></div>
                             </div>
                             <div class="options-estimate-row">
                                 <div class="opt-est-main">