fix: return saved group nickname profile

server/im_http_test.go

@@ -3835,6 +3835,44 @@ func TestServeIMGroupMyProfileKeepsSubscriptionNicknameWhenBusinessMemberMissing
 	}
 }
 
+func TestServeIMGroupMyProfileGetReturnsSubscriptionNickname(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	expectIMBearer(t, ctrl, "token-1", 7, 42)
+	oldSubs := store.Subs
+	subs := mock_store.NewMockSubsPersistenceInterface(ctrl)
+	store.Subs = subs
+	defer func() {
+		store.Subs = oldSubs
+	}()
+
+	subs.EXPECT().Get(types.TenantID(7), "grpAlpha", types.Uid(42), false).Return(&types.Subscription{
+		TenantID:  7,
+		User:      types.Uid(42).String(),
+		Topic:     "grpAlpha",
+		ModeWant:  types.ModeCFull,
+		ModeGiven: types.ModeCFull,
+		Private: map[string]any{
+			"nickname":           "Coffee 备注",
+			"profile_version":    3,
+			"profile_updated_at": "2026-09-03T01:00:00Z",
+		},
+	}, nil)
+
+	req := httptest.NewRequest(http.MethodGet, "/v1/im/groups/grpAlpha/members/me/profile", nil)
+	req.Header.Set("Authorization", "Bearer token-1")
+	rec := httptest.NewRecorder()
+	serveIMGroupResource(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("profile get status: got %d body=%s", rec.Code, rec.Body.String())
+	}
+	data := decodeIMHTTPResponse(t, rec).Data.(map[string]any)
+	if data["nickname"] != "Coffee 备注" || data["version"].(float64) != 3 || data["updated_at"] != "2026-09-03T01:00:00Z" {
+		t.Fatalf("unexpected profile get response: %#v", data)
+	}
+}
+
 func TestServeIMGroupLeave(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()