fix(hub,gate): cross-margin TP/SL and dedupe hub conditional orders

Gate hedge position triggers use close=false; stop silent ccxt fallback on cross margin. Hub merges agent and Flask TP/SL by trigger price and labels Gate orders correctly.

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

manual_trading_hub/static/app.js

@@ -896,8 +896,29 @@
     return localStorage.getItem(ordersCollapseKey(exchangeId, symbol)) === "1";
   }
 
+  function dedupeCondOrdersByTrigger(orders) {
+    const list = Array.isArray(orders) ? orders : [];
+    const seen = new Set();
+    const out = [];
+    for (const o of list) {
+      const px = orderTriggerOrPrice(o);
+      const key =
+        px != null
+          ? "t:" + String(px)
+          : o && o.id
+            ? "id:" + String(o.id)
+            : null;
+      if (key && seen.has(key)) continue;
+      if (key) seen.add(key);
+      out.push(o);
+    }
+    return out;
+  }
+
   function condOrdersFromPosition(pos) {
-    const cond = Array.isArray(pos.conditional_orders) ? pos.conditional_orders : [];
+    const cond = dedupeCondOrdersByTrigger(
+      Array.isArray(pos.conditional_orders) ? pos.conditional_orders : []
+    );
     if (cond.length) return cond;
     const et = pos.exchange_tpsl;
     if (!et) return [];