merge: 최신 main을 국가색 대비 전경색 작업에 통합

app/game-frontend/src/assets/main.css

@@ -88,6 +88,17 @@ textarea {
     display: inline-block;
 }
 
+/*
+ * Ref's common stylesheet keeps diagnostic seeds in the DOM so they remain
+ * copyable, while removing them from every normal log rendering surface.
+ * This marker can arrive through main, personal, audit, and history log APIs,
+ * so the display contract belongs to the app-wide legacy markup boundary.
+ */
+.hidden_but_copyable {
+    color: rgba(0, 0, 0, 0) !important;
+    font-size: 0;
+}
+
 .small_war_log .war_type_attack {
     color: cyan;
 }

app/game-frontend/src/components/main/GeneralRecordPanels.vue

@@ -84,11 +84,6 @@ const unavailableText: Record<GeneralRecordType, string> = {
     border-bottom: 0;
 }
 
-.log-line :deep(.hidden_but_copyable) {
-    color: transparent !important;
-    font-size: 0;
-}
-
 .empty {
     padding: 2px 8px;
     color: #999;

app/game-frontend/src/views/MainView.vue

@@ -763,11 +763,6 @@ button {
     vertical-align: top;
 }
 
-.record-line :deep(.hidden_but_copyable) {
-    color: transparent !important;
-    font-size: 0;
-}
-
 .record-empty {
     color: #aaa;
 }