diff --git a/src/components/common/system/header/PageHeader.tsx b/src/components/common/system/header/PageHeader.tsx
index f6004b4f..283683f6 100644
--- a/src/components/common/system/header/PageHeader.tsx
+++ b/src/components/common/system/header/PageHeader.tsx
@@ -1,12 +1,16 @@
 import { useNavigate } from "react-router-dom";
 import ArrowLeft from "@/assets/icons/arrow_left.svg";
 import MeetBall from "@/assets/icons/meetball.svg";
+import Refresh from "@/assets/icons/refresh.svg";
 import clsx from "clsx";
 
 interface PageHeaderProps {
   title: string;
   onBackClick?: () => void;
   onMoreClick?: () => void;
+  onRefreshClick?: () => void;
+  /** true면 새로고침 아이콘이 회전한다. */
+  refreshing?: boolean;
   className?: string;
 }
 
@@ -14,6 +18,8 @@ export const PageHeader = ({
   title,
   onBackClick,
   onMoreClick,
+  onRefreshClick,
+  refreshing = false,
   className,
 }: PageHeaderProps) => {
   const navigate = useNavigate();
@@ -31,7 +37,7 @@ export const PageHeader = ({
         className,
       )}
     >
-      <button type="button" className="p-1">
+      <button type="button" className="p-1 cursor-pointer">
         <img
           src={ArrowLeft}
           className="w-6"
@@ -42,8 +48,28 @@ export const PageHeader = ({
 
       <div className="flex justify-start flex-1 header-h4">{title}</div>
 
+      {onRefreshClick && (
+        <button
+          type="button"
+          className="p-1 cursor-pointer disabled:cursor-default"
+          onClick={onRefreshClick}
+          disabled={refreshing}
+          aria-label="새로고침"
+        >
+          <img
+            src={Refresh}
+            className={clsx("w-6", refreshing && "animate-spin")}
+            alt="새로고침"
+          />
+        </button>
+      )}
+
       {onMoreClick && (
-        <button type="button" className="p-1" onClick={onMoreClick}>
+        <button
+          type="button"
+          className="p-1 cursor-pointer"
+          onClick={onMoreClick}
+        >
           <img src={MeetBall} className="w-6" alt="meetball icon" />
         </button>
       )}
diff --git a/src/components/home/WorkoutDayEntry.tsx b/src/components/home/WorkoutDayEntry.tsx
index dcc69ae6..85313bd2 100644
--- a/src/components/home/WorkoutDayEntry.tsx
+++ b/src/components/home/WorkoutDayEntry.tsx
@@ -44,6 +44,13 @@ export const WorkoutDayEntry = ({
 
   return (
     <div className="flex flex-col gap-3">
+      <div className="flex items-center gap-1">
+        <span className="flex-1 h-px bg-ye-300 rounded-full" />
+        <span className="body-sm-400 text-gr-700 whitespace-nowrap">
+          클릭해서 운동 상세·게임판 보기
+        </span>
+        <span className="flex-1 h-px bg-ye-300 rounded-full" />
+      </div>
       {exerciseData.map(item => (
         <DailyExercise_S
           key={item.exerciseId}
diff --git a/src/layout/GroupLayout.tsx b/src/layout/GroupLayout.tsx
index f7ce4785..f1307447 100644
--- a/src/layout/GroupLayout.tsx
+++ b/src/layout/GroupLayout.tsx
@@ -14,6 +14,8 @@ import axios, { AxiosError } from "axios";
 import type { CommonResponse } from "../types/common";
 import type { PersonalChatRoom } from "../types/chat";
 import { Modal_Del } from "../components/group/Modal_Del";
+import { useRoomIdByPartyId } from "../api/chat/getRoomIdByPartyId";
+import { useChatWsStore } from "../store/useChatWsStore";
 
 const options = [
   { label: "홈", value: "" },
@@ -156,6 +158,18 @@ export const GroupLayout = () => {
     partyDetail?.memberRole === "PARTY_MANAGER" ||
     partyDetail?.memberRole === "PARTY_SUBMANAGER";
 
+  // 모임 채팅 탭 안읽음 표시: 가입 회원에게만, 새 메시지가 있으면 빨간 점.
+  // 채팅 탭 진입 시 GroupChatDetailTemplate이 clearUnread로 0을 만들어 자동으로 사라진다.
+  const { data: groupChatRoomId } = useRoomIdByPartyId(
+    Number(groupId),
+    !!groupId && isJoined,
+  );
+  const hasGroupChatUnread = useChatWsStore(s =>
+    groupChatRoomId
+      ? (s.meta[groupChatRoomId]?.unreadCount ?? 0) > 0
+      : false,
+  );
+
   return (
     <div className="flex flex-col">
       <PageHeader
@@ -169,6 +183,7 @@ export const GroupLayout = () => {
         selected={select}
         onChange={handleChange}
         type="group"
+        dots={{ chat: hasGroupChatUnread }}
       />
 
       <div className="pt-14">
diff --git a/src/pages/group/GroupCalendarPage.tsx b/src/pages/group/GroupCalendarPage.tsx
index b8ba8ae7..2f242e2b 100644
--- a/src/pages/group/GroupCalendarPage.tsx
+++ b/src/pages/group/GroupCalendarPage.tsx
@@ -65,9 +65,13 @@ export const GroupCalendarPage = () => {
 
       <div className="flex flex-col pb-15">
         {selectedDayExercises.length > 0 ? (
-          selectedDayExercises.map(exercise => (
+          selectedDayExercises.map((exercise, index) => (
             <div
-              className="border-b-1 border-gy-200 mb-3"
+              className={`mb-3 ${
+                index < selectedDayExercises.length - 1
+                  ? "border-b-1 border-gy-200"
+                  : ""
+              }`}
               key={exercise.exerciseId}
             >
               <ContentCardL
@@ -94,7 +98,7 @@ export const GroupCalendarPage = () => {
         )}
       </div>
 
-      {calendarData?.isMember && (
+      {calendarData?.isMember && selectedDayExercises.length > 0 && (
         <div className="fixed bottom-0">
           <Grad_GR400_L label="이 날 운동 공유하기" onClick={onClickShare} />
         </div>
diff --git a/src/pages/group/MyGroupDetail/GameBoard/GameBoardTab.tsx b/src/pages/group/MyGroupDetail/GameBoard/GameBoardTab.tsx
index b64d8ef5..b46fd8fe 100644
--- a/src/pages/group/MyGroupDetail/GameBoard/GameBoardTab.tsx
+++ b/src/pages/group/MyGroupDetail/GameBoard/GameBoardTab.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import clsx from "clsx";
 import {
   DndContext,
@@ -67,9 +67,18 @@ const MAX_SELECTED_MEMBERS = 4;
 interface GameBoardTabProps {
   gameBoardId: number;
   isManager: boolean;
+  /** 헤더 새로고침 버튼을 누를 때마다 증가. 값이 바뀌면 보드/명단을 다시 불러온다. */
+  refreshSignal?: number;
+  /** 새로고침 요청이 진행 중인지 상위(헤더)로 알린다. */
+  onRefreshingChange?: (refreshing: boolean) => void;
 }
 
-export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
+export const GameBoardTab = ({
+  gameBoardId,
+  isManager,
+  refreshSignal = 0,
+  onRefreshingChange,
+}: GameBoardTabProps) => {
   const [isLoading, setIsLoading] = useState(true);
   const [selectedIds, setSelectedIds] = useState<number[]>([]);
   const [members, setMembers] = useState<GameMember[]>([]);
@@ -162,6 +171,50 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     return () => clearInterval(id);
   }, []);
 
+  // 소켓이 (재)연결되면 그동안 놓친 변경을 REST로 백필한다.
+  // 최초 연결분은 위 마운트 effect가 이미 처리하므로 건너뛴다.
+  const hasConnectedRef = useRef(false);
+  useEffect(() => {
+    if (!gameWs.isOpen) return;
+    if (!hasConnectedRef.current) {
+      hasConnectedRef.current = true;
+      return;
+    }
+    getGameBoard(gameBoardId)
+      .then(applyBoard)
+      .catch(() => {});
+    refreshMembers();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [gameWs.isOpen, gameBoardId]);
+
+  // 헤더 새로고침 버튼: 보드/명단을 REST로 다시 불러온다. (초기값 0은 무시)
+  useEffect(() => {
+    if (!refreshSignal) return;
+    let cancelled = false;
+    onRefreshingChange?.(true);
+    Promise.all([
+      getGameBoard(gameBoardId).then(board => {
+        if (!cancelled) applyBoard(board);
+      }),
+      getGameBoardMembers(gameBoardId, toGameBoardMembersParams(filters)).then(
+        res => {
+          if (!cancelled) applyMembersResponse(res);
+        },
+      ),
+      // 응답이 즉시 와도 회전이 눈에 보이도록 최소 시간 확보
+      new Promise(resolve => setTimeout(resolve, 600)),
+    ])
+      .catch(() => {})
+      .finally(() => {
+        if (!cancelled) onRefreshingChange?.(false);
+      });
+    return () => {
+      cancelled = true;
+      onRefreshingChange?.(false);
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [refreshSignal]);
+
   // 다른 클라이언트의 변경사항 브로드캐스트 반영
   useEffect(() => {
     const msg = gameWs.lastMessage;
@@ -272,10 +325,12 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
   const handleAddToWaitingQueue = async () => {
     if (selectedMembers.length === 0) return;
     try {
-      await gameWs.createGame({
+      const res = await gameWs.createGame({
         gameBoardId,
         gameBoardMemberIds: selectedMembers.map(m => m.id),
       });
+      if (res.data?.board) applyBoard(res.data.board);
+      refreshMembers();
       setSelectedIds([]);
     } catch (err) {
       console.error("[GAME] CREATE_GAME 실패", err);
@@ -292,6 +347,8 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
       });
       const restoredIds = res.data?.players.map(p => p.gameBoardMemberId);
       setSelectedIds(restoredIds?.length ? restoredIds : group.memberIds);
+      if (res.data?.board) applyBoard(res.data.board);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] DELETE_GAME(restore) 실패", err);
       alert("대기열 변경에 실패했어요.");
@@ -302,11 +359,13 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     const group = waitingGroups.find(g => g.id === id);
     if (!group) return;
     try {
-      await gameWs.deleteGame({
+      const res = await gameWs.deleteGame({
         gameBoardId,
         gameId: group.gameId,
         restore: false,
       });
+      if (res.data?.board) applyBoard(res.data.board);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] DELETE_GAME 실패", err);
       alert("대기열 삭제에 실패했어요.");
@@ -317,7 +376,13 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     const group = waitingGroups.find(g => g.id === waitingGroupId);
     if (!group) return;
     try {
-      await gameWs.startGame({ gameBoardId, gameId: group.gameId, courtId });
+      const res = await gameWs.startGame({
+        gameBoardId,
+        gameId: group.gameId,
+        courtId,
+      });
+      if (res.data) applyBoard(res.data);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] START_GAME 실패", err);
       alert("게임 시작에 실패했어요.");
@@ -334,7 +399,13 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     if (!group || !court?.gameId) return;
     try {
       await gameWs.moveToWaiting({ gameBoardId, gameId: court.gameId });
-      await gameWs.startGame({ gameBoardId, gameId: group.gameId, courtId });
+      const res = await gameWs.startGame({
+        gameBoardId,
+        gameId: group.gameId,
+        courtId,
+      });
+      if (res.data) applyBoard(res.data);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] 코트 교체 실패", err);
       alert("코트 교체에 실패했어요.");
@@ -368,7 +439,12 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     const court = courts.find(c => c.id === courtId);
     if (!court?.gameId) return;
     try {
-      await gameWs.completeGame({ gameBoardId, gameId: court.gameId });
+      const res = await gameWs.completeGame({
+        gameBoardId,
+        gameId: court.gameId,
+      });
+      if (res.data) applyBoard(res.data);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] COMPLETE_GAME 실패", err);
       alert("게임 완료에 실패했어요.");
@@ -381,7 +457,12 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
     const court = courts.find(c => c.id === courtId);
     if (!court?.gameId) return;
     try {
-      await gameWs.moveToWaiting({ gameBoardId, gameId: court.gameId });
+      const res = await gameWs.moveToWaiting({
+        gameBoardId,
+        gameId: court.gameId,
+      });
+      if (res.data) applyBoard(res.data);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] MOVE_TO_WAITING 실패", err);
       alert("대기로 되돌리기에 실패했어요.");
@@ -399,6 +480,8 @@ export const GameBoardTab = ({ gameBoardId, isManager }: GameBoardTabProps) => {
       });
       const restoredIds = res.data?.players.map(p => p.gameBoardMemberId);
       setSelectedIds(restoredIds?.length ? restoredIds : []);
+      if (res.data?.board) applyBoard(res.data.board);
+      refreshMembers();
     } catch (err) {
       console.error("[GAME] 경기 취소 실패", err);
       alert("경기 취소에 실패했어요.");
diff --git a/src/pages/group/MyGroupDetail/MyExerciseDetail.tsx b/src/pages/group/MyGroupDetail/MyExerciseDetail.tsx
index 7648384e..1e4a9af0 100644
--- a/src/pages/group/MyGroupDetail/MyExerciseDetail.tsx
+++ b/src/pages/group/MyGroupDetail/MyExerciseDetail.tsx
@@ -81,6 +81,10 @@ export const MyExerciseDetail = () => {
 
   const [isWithdrawnModal, setIsWithdrawnModal] = useState(false);
 
+  // 게임판 헤더 새로고침: 값이 바뀔 때마다 GameBoardTab이 보드/명단을 다시 불러온다.
+  const [gameRefreshSignal, setGameRefreshSignal] = useState(0);
+  const [isGameRefreshing, setIsGameRefreshing] = useState(false);
+
   const location = window.location;
   type TabType = "detail" | "game" | "finished";
   const [activeTab, setActiveTab] = useState<TabType>(() => {
@@ -206,8 +210,16 @@ export const MyExerciseDetail = () => {
       <PageHeader
         title="내 운동 상세"
         onMoreClick={
-          isCurrentUserLeader ? () => setIsSortOpen(true) : undefined
+          activeTab === "detail" && isCurrentUserLeader
+            ? () => setIsSortOpen(true)
+            : undefined
+        }
+        onRefreshClick={
+          activeTab === "game"
+            ? () => setGameRefreshSignal(n => n + 1)
+            : undefined
         }
+        refreshing={isGameRefreshing}
         onBackClick={() => {
           if (returnPath === -1) navigate(-1);
           else navigate(returnPath);
@@ -389,6 +401,8 @@ export const MyExerciseDetail = () => {
           <GameBoardTab
             gameBoardId={detail.gameBoardId}
             isManager={detail.isManager}
+            refreshSignal={gameRefreshSignal}
+            onRefreshingChange={setIsGameRefreshing}
           />
         )}