debug(service-party-app): 添加 keygen 触发流程详细日志

添加 [KEYGEN] 前缀的 console.log 来追踪：
- checkAndTriggerKeygen 是否被调用
- activeKeygenSession 的状态
- 轮询条件是否满足
- handleSessionStart 的执行
- participateKeygen 的参数

帮助诊断 external party 为何不启动 TSS 进程

Generated with Claude Code

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/mpc-system/services/service-party-app/electron/main.ts

@@ -128,14 +128,23 @@ function cleanExpiredEventCache() {
 // 检查并触发 keygen（100% 可靠方案：轮询等待所有参与者加入）
 // 与 server-party 的 waitForAllParticipants 逻辑保持一致
 async function checkAndTriggerKeygen(sessionId: string) {
+  console.log('[KEYGEN] checkAndTriggerKeygen called with sessionId:', sessionId);
+
   if (!activeKeygenSession || activeKeygenSession.sessionId !== sessionId) {
-    console.log('No matching active keygen session for', sessionId);
+    console.log('[KEYGEN] No matching active keygen session for', sessionId);
     return;
   }
 
+  console.log('[KEYGEN] Active session found:', {
+    sessionId: activeKeygenSession.sessionId,
+    partyIndex: activeKeygenSession.partyIndex,
+    threshold: activeKeygenSession.threshold,
+    participantCount: activeKeygenSession.participants.length,
+  });
+
   // 如果 TSS 已经在运行，不重复触发
   if (tssHandler?.getIsRunning()) {
-    console.log('TSS already running, skip check');
+    console.log('[KEYGEN] TSS already running, skip check');
     return;
   }
 
@@ -143,6 +152,7 @@ async function checkAndTriggerKeygen(sessionId: string) {
   const maxWaitMs = 5 * 60 * 1000; // 5分钟超时
   const startTime = Date.now();
 
+  console.log('[KEYGEN] Starting to poll session status...');
   debugLog.info('main', `Starting to poll session status for ${sessionId}`);
 
   while (Date.now() - startTime < maxWaitMs) {
@@ -180,7 +190,16 @@ async function checkAndTriggerKeygen(sessionId: string) {
                           status.status === 'all_joined' ||
                           status.status === 'waiting_for_keygen';
 
+      console.log('[KEYGEN] Check conditions:', {
+        hasAllParticipants,
+        statusReady,
+        currentParticipants,
+        expectedN,
+        status: status.status,
+      });
+
       if (hasAllParticipants && statusReady) {
+        console.log('[KEYGEN] Conditions met! Triggering keygen...');
         debugLog.info('main', `All ${expectedN} participants joined (status: ${status.status}), triggering keygen...`);
 
         // 使用后端返回的 participants 信息（包含正确的 party_index）
@@ -393,7 +412,16 @@ async function handleSessionStart(event: {
   thresholdT: number;
   selectedParties: string[];
 }) {
+  console.log('[KEYGEN] handleSessionStart called:', {
+    eventType: event.eventType,
+    sessionId: event.sessionId,
+    thresholdN: event.thresholdN,
+    thresholdT: event.thresholdT,
+    selectedParties: event.selectedParties?.length,
+  });
+
   if (!activeKeygenSession) {
+    console.log('[KEYGEN] No active keygen session, ignoring');
     debugLog.debug('main', 'No active keygen session, ignoring session start event');
     return;
   }
@@ -472,6 +500,13 @@ async function handleSessionStart(event: {
     })))}`);
   }
 
+  console.log('[KEYGEN] Calling tssHandler.participateKeygen with:', {
+    sessionId: activeKeygenSession.sessionId,
+    partyId: grpcClient?.getPartyId(),
+    partyIndex: activeKeygenSession.partyIndex,
+    participants: activeKeygenSession.participants.map(p => ({ partyId: p.partyId.substring(0, 8), partyIndex: p.partyIndex })),
+    threshold: activeKeygenSession.threshold,
+  });
   debugLog.info('tss', `Starting keygen for session ${event.sessionId}...`);
 
   try {