From aa9171ce2c1d266b66b1552b76d5ad23affc038c Mon Sep 17 00:00:00 2001
From: hailin <hailin.zhao@gdzx.xyz>
Date: Mon, 29 Dec 2025 11:37:09 -0800
Subject: [PATCH] =?UTF-8?q?fix(service-party-app):=20=E4=BF=AE=E5=A4=8D=20?=
 =?UTF-8?q?threshold=20=E4=B8=BA=20undefined=20=E5=AF=BC=E8=87=B4=E7=9A=84?=
 =?UTF-8?q?=E5=B4=A9=E6=BA=83?=
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问题：
- Session.tsx 直接访问 session.threshold.n 和 session.threshold.t
- 当后端返回的 session 数据中 threshold 为 undefined 时崩溃

修复：
- 添加空值检查 session.threshold?.n || 0
- 阈值信息部分添加条件渲染

Generated with Claude Code

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .../services/service-party-app/src/pages/Session.tsx        | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/backend/mpc-system/services/service-party-app/src/pages/Session.tsx b/backend/mpc-system/services/service-party-app/src/pages/Session.tsx
index a8fc8454..0dda488f 100644
--- a/backend/mpc-system/services/service-party-app/src/pages/Session.tsx
+++ b/backend/mpc-system/services/service-party-app/src/pages/Session.tsx
@@ -187,7 +187,7 @@ export default function Session() {
           {/* 参与方列表 */}
           <div className={styles.section}>
             <h3 className={styles.sectionTitle}>
-              参与方 ({(session.participants || []).length} / {session.threshold.n})
+              参与方 ({(session.participants || []).length} / {session.threshold?.n || 0})
             </h3>
             <div className={styles.participantList}>
               {(session.participants || []).map((participant, index) => (
@@ -201,7 +201,7 @@ export default function Session() {
                   </span>
                 </div>
               ))}
-              {Array.from({ length: Math.max(0, session.threshold.n - (session.participants || []).length) }).map((_, index) => (
+              {Array.from({ length: Math.max(0, (session.threshold?.n || 0) - (session.participants || []).length) }).map((_, index) => (
                 <div key={`empty-${index}`} className={`${styles.participant} ${styles.participantEmpty}`}>
                   <div className={styles.participantInfo}>
                     <span className={styles.participantIndex}>#{(session.participants || []).length + index + 1}</span>
@@ -214,6 +214,7 @@ export default function Session() {
           </div>
 
           {/* 阈值信息 */}
+          {session.threshold && (
           <div className={styles.section}>
             <h3 className={styles.sectionTitle}>阈值设置</h3>
             <div className={styles.thresholdInfo}>
@@ -225,6 +226,7 @@ export default function Session() {
               </span>
             </div>
           </div>
+          )}
 
           {/* 完成状态 */}
           {session.status === 'completed' && session.publicKey && (