feat条件单页本页划入交易户，避免跳转丢失新建表单。

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

app.py

@@ -597,6 +597,43 @@ def api_open_url(iid: int):
     return jsonify({"ok": True, "url": url, "base_url": inst["base_url"], "tab": tab})
 
 
+@app.route("/api/instances/<int:iid>/transfer", methods=["POST"])
+@login_required
+def api_instance_transfer(iid: int):
+    """条件单页本页划转:中控发指令,实例执行资金户↔交易户."""
+    from lib.bridge_client_lib import post_instance_transfer
+
+    inst = get_instance(iid)
+    if not inst:
+        return jsonify({"ok": False, "msg": "不存在"}), 404
+    data = request.get_json(silent=True) or {}
+    try:
+        amount = float(data.get("amount"))
+    except (TypeError, ValueError):
+        return jsonify({"ok": False, "msg": "数量无效"}), 400
+    if amount <= 0:
+        return jsonify({"ok": False, "msg": "数量须大于 0"}), 400
+    from_acct = (data.get("from") or "funding").strip() or "funding"
+    to_acct = (data.get("to") or "trading").strip() or "trading"
+    ccy = (data.get("ccy") or "USDT").strip().upper() or "USDT"
+    out = post_instance_transfer(
+        inst,
+        amount=amount,
+        from_acct=from_acct,
+        to_acct=to_acct,
+        ccy=ccy,
+    )
+    # 成功后轻量刷新总览/条件单缓存,供下次读到新余额;不整页重载
+    if out.get("ok"):
+        try:
+            overview_store.request_refresh()
+            cond_orders_store.request_refresh()
+        except Exception:
+            pass
+    code = 200 if out.get("ok") else 400
+    return jsonify(out), code
+
+
 @app.route("/api/settings/update/hub/version", methods=["GET"])
 @login_required
 def api_hub_self_version():