fix(pop): 전수 점검 방어 코드 추가 - resolveModalWidth NaN 방어, connections useMemo, filterTabs 의존성 안정화

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

frontend/components/pop/viewer/PopViewerWithModals.tsx

@@ -11,7 +11,7 @@
 
 "use client";
 
-import { useState, useCallback, useEffect } from "react";
+import { useState, useCallback, useEffect, useMemo } from "react";
 import {
   Dialog,
   DialogContent,
@@ -65,9 +65,13 @@ export default function PopViewerWithModals({
   const { subscribe, publish } = usePopEvent(screenId);
 
   // 연결 해석기: layout에 정의된 connections를 이벤트 라우팅으로 변환
+  const stableConnections = useMemo(
+    () => layout.dataFlow?.connections ?? [],
+    [layout.dataFlow?.connections]
+  );
   useConnectionResolver({
     screenId,
-    connections: layout.dataFlow?.connections || [],
+    connections: stableConnections,
   });
 
   // 모달 열기/닫기 이벤트 구독