feat(console): toolbar toggle to hide per-line color accent bars

Adds a paint-bucket toggle button to the console toolbar (in the appearance
cluster next to zoom) that shows/hides the per-line left color accent bars for
a cleaner monochrome gutter. The icon reflects state (FORMAT_COLOR_FILL when on,
a dimmed FORMAT_COLOR_RESET when off) with a tooltip. Session-only, like the
console zoom factor; default on.

Adds console_toggle_accents to the English source and all eight translations
(no new CJK glyphs — the subset font already covers them).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

res/lang/de.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "Stoppt",
     "console_status_unknown": "Unbekannt",
     "console_tab_completion": "Tab zur Vervollständigung",
+    "console_toggle_accents": "Farbakzente der Zeilen umschalten",
     "console_type_help": "Geben Sie 'help' ein für verfügbare Befehle",
     "console_welcome": "Willkommen bei ObsidianDragon Konsole",
     "console_zoom_in": "Vergrößern",

res/lang/es.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "Deteniendo",
     "console_status_unknown": "Desconocido",
     "console_tab_completion": "Tab para completar",
+    "console_toggle_accents": "Alternar acentos de color de línea",
     "console_type_help": "Escribe 'help' para ver los comandos disponibles",
     "console_welcome": "Bienvenido a la Consola de ObsidianDragon",
     "console_zoom_in": "Acercar",

res/lang/fr.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "Arrêt",
     "console_status_unknown": "Inconnu",
     "console_tab_completion": "Tab pour compléter",
+    "console_toggle_accents": "Basculer les accents de couleur des lignes",
     "console_type_help": "Tapez 'help' pour les commandes disponibles",
     "console_welcome": "Bienvenue dans la console ObsidianDragon",
     "console_zoom_in": "Agrandir",

res/lang/ja.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "停止中",
     "console_status_unknown": "不明",
     "console_tab_completion": "Tabで補完",
+    "console_toggle_accents": "行のカラーアクセントを切り替え",
     "console_type_help": "'help'と入力して利用可能なコマンドを表示",
     "console_welcome": "ObsidianDragonコンソールへようこそ",
     "console_zoom_in": "拡大",

res/lang/ko.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "중지 중",
     "console_status_unknown": "알 수 없음",
     "console_tab_completion": "Tab으로 자동 완성",
+    "console_toggle_accents": "줄 색상 강조 전환",
     "console_type_help": "'help'를 입력하여 사용 가능한 명령어 보기",
     "console_welcome": "ObsidianDragon 콘솔에 오신 것을 환영합니다",
     "console_zoom_in": "확대",

res/lang/pt.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "Parando",
     "console_status_unknown": "Desconhecido",
     "console_tab_completion": "Tab para completar",
+    "console_toggle_accents": "Alternar destaques de cor das linhas",
     "console_type_help": "Digite 'help' para comandos disponíveis",
     "console_welcome": "Bem-vindo ao Console ObsidianDragon",
     "console_zoom_in": "Aumentar zoom",

res/lang/ru.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "Остановка",
     "console_status_unknown": "Неизвестно",
     "console_tab_completion": "Tab для дополнения",
+    "console_toggle_accents": "Переключить цветовые акценты строк",
     "console_type_help": "Введите 'help' для списка команд",
     "console_welcome": "Добро пожаловать в консоль ObsidianDragon",
     "console_zoom_in": "Увеличить",

res/lang/zh.json

@@ -240,6 +240,7 @@
     "console_status_stopping": "停止中",
     "console_status_unknown": "未知",
     "console_tab_completion": "Tab 补全",
+    "console_toggle_accents": "切换行颜色强调",
     "console_type_help": "输入 'help' 查看可用命令",
     "console_welcome": "欢迎使用 ObsidianDragon 控制台",
     "console_zoom_in": "放大",

src/ui/windows/console_tab.cpp

@@ -44,6 +44,7 @@ ImU32 ConsoleTab::COLOR_DAEMON  = IM_COL32(160, 160, 160, 180);
 ImU32 ConsoleTab::COLOR_INFO    = IM_COL32(191, 209, 229, 255);
 ImU32 ConsoleTab::COLOR_RPC     = IM_COL32(120, 180, 255, 210);
 bool  ConsoleTab::s_scanline_enabled = true;
+bool  ConsoleTab::s_line_accents_enabled = true;
 float ConsoleTab::s_console_zoom = 1.0f;
 bool  ConsoleTab::s_daemon_messages_enabled = true;
 bool  ConsoleTab::s_errors_only_enabled = false;
@@ -544,6 +545,21 @@ void ConsoleTab::renderToolbar(ConsoleCommandExecutor& exec)
     // Output filter input
     drawFilterInput();
 
+    // Color-accent toggle: hide/show the per-line left accent bars (appearance, grouped with zoom).
+    ImGui::SameLine();
+    ImGui::Spacing();
+    ImGui::SameLine();
+    {
+        float btnSz = ImGui::GetFrameHeight();
+        const char* icon = s_line_accents_enabled ? ICON_MD_FORMAT_COLOR_FILL : ICON_MD_FORMAT_COLOR_RESET;
+        if (!s_line_accents_enabled)
+            ImGui::PushStyleColor(ImGuiCol_Text, ImGui::ColorConvertU32ToFloat4(OnSurfaceDisabled()));
+        if (TactileButton(icon, ImVec2(btnSz, btnSz), Type().iconMed()))
+            s_line_accents_enabled = !s_line_accents_enabled;
+        if (!s_line_accents_enabled) ImGui::PopStyleColor();
+        if (ImGui::IsItemHovered()) material::Tooltip("%s", TR("console_toggle_accents"));
+    }
+
     // Zoom +/- buttons (right side of toolbar)
     ImGui::SameLine();
     ImGui::Spacing();
@@ -940,7 +956,8 @@ void ConsoleTab::drawVisibleLines(float padX, float lineHeight, bool hasTextFilt
 
         // Left-edge channel accent bar, drawn in the padX margin so it never overlaps
         // the text or the selection highlight. Same color that tints the toolbar toggle.
-        if (line.channel != ConsoleChannel::None) {
+        // Suppressed when the toolbar's color-accent toggle is off (cleaner monochrome gutter).
+        if (s_line_accents_enabled && line.channel != ConsoleChannel::None) {
             ImU32 barCol = channelAccentColor(line.channel);
             if (barCol != 0) {
                 float barW = 3.0f * Layout::hScale();

src/ui/windows/console_tab.h

@@ -69,6 +69,9 @@ public:
     // Console output zoom factor (1.0 = default caption font size)
     static float s_console_zoom;
 
+    // Draw the per-line left color accent bars (channel-colored). Toggled from the toolbar.
+    static bool s_line_accents_enabled;
+
     // Show/hide daemon output messages
     static bool s_daemon_messages_enabled;
 

src/util/i18n.cpp

@@ -1290,6 +1290,7 @@ void I18n::loadBuiltinEnglish()
         strings_["console_welcome"] = "Welcome to ObsidianDragon Console";
         strings_["console_zoom_in"] = "Zoom in";
         strings_["console_zoom_out"] = "Zoom out";
+        strings_["console_toggle_accents"] = "Toggle line color accents";
 
         // --- Export All Keys Dialog ---
         strings_["export_keys_btn"] = "Export Keys";