fix(ui): stop painting git activity dots on non-git rail surfaces

The badge PR inverted showActivityDot to !== 'git', so editor/terminal/diff
picked up the blue activity dot whenever git had changes. Git already shows
a numeric badge; other surfaces should stay quiet. Also split the count
aria/tooltip strings into singular/plural keys.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/components/layout/ContextPanelRail.tsx

@@ -284,8 +284,8 @@ export const ContextPanelRail: React.FC = () => {
         <SortableContext items={surfaces.map((surface) => surface.id)} strategy={verticalListSortingStrategy}>
           {surfaces.map((surface, index) => {
             const label = t(surface.labelKey);
-            // The Git surface carries its changed-files count as a numeric
-            // badge; other surfaces keep the plain activity dot.
+            // Git shows a numeric badge instead of the old activity dot.
+            // Other surfaces never inherit git's changed-files signal.
             const gitChangedCount = surface.id === 'git' ? changedFilesCount : 0;
             const badgeCount = gitChangedCount > 0 ? gitChangedCount : null;
             return (
@@ -293,15 +293,25 @@ export const ContextPanelRail: React.FC = () => {
                 key={surface.id}
                 surface={surface}
                 isActive={activeMode === surface.mode}
-                showActivityDot={surface.id !== 'git' && changedFilesCount > 0}
+                showActivityDot={false}
                 label={label}
                 description={t(surface.descriptionKey)}
                 badgeCount={badgeCount}
                 badgeAriaLabel={badgeCount !== null
-                  ? t('contextRail.surface.git.changesCountAria', { label, count: badgeCount })
+                  ? t(
+                      badgeCount === 1
+                        ? 'contextRail.surface.git.changesCountAriaSingle'
+                        : 'contextRail.surface.git.changesCountAriaPlural',
+                      { label, count: badgeCount },
+                    )
                   : null}
                 badgeDescription={badgeCount !== null
-                  ? t('contextRail.surface.git.changesCountTooltip', { count: badgeCount })
+                  ? t(
+                      badgeCount === 1
+                        ? 'contextRail.surface.git.changesCountTooltipSingle'
+                        : 'contextRail.surface.git.changesCountTooltipPlural',
+                      { count: badgeCount },
+                    )
                   : null}
                 orderNumber={index + 1}
                 showOrderNumber={revealNumbers}

packages/ui/src/lib/i18n/messages/de.ts

@@ -2828,8 +2828,10 @@ export const dict = {
   'contextPanel.editorEmpty.description': 'Wählen Sie etwas aus der Seitenleiste aus, um Kontext anzuzeigen.',
   'contextRail.surface.editor.description': 'Bearbeitungskontext',
   'contextRail.surface.git.description': 'Git-Kontext',
-  'contextRail.surface.git.changesCountAria': '{label}, {count} geänderte Dateien',
-  'contextRail.surface.git.changesCountTooltip': '{count} geänderte Dateien',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}, {count} geänderte Datei',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}, {count} geänderte Dateien',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} geänderte Datei',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} geänderte Dateien',
   'contextRail.surface.terminal.description': 'Terminal-Kontext',
   'contextRail.surface.diff.description': 'Diff-Kontext',
   'contextPanel.mode.walkthrough': 'Walkthrough',

packages/ui/src/lib/i18n/messages/en.ts

@@ -1106,8 +1106,10 @@ export const dict = {
   'contextPanel.editorEmpty.description': 'Pick a file from the tree to start editing.',
   'contextRail.surface.editor.description': 'Edit project files',
   'contextRail.surface.git.description': 'Commits, branches, and pull requests',
-  'contextRail.surface.git.changesCountAria': '{label}, {count} changed files',
-  'contextRail.surface.git.changesCountTooltip': '{count} changed files',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}, {count} changed file',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}, {count} changed files',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} changed file',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} changed files',
   'contextRail.surface.terminal.description': 'Built-in terminal',
   'contextRail.surface.diff.description': 'Review working changes',
   'contextPanel.mode.walkthrough': 'Walkthrough',

packages/ui/src/lib/i18n/messages/es.ts

@@ -1107,8 +1107,10 @@ export const dict: Record<I18nKey, string> = {
   "contextPanel.editorEmpty.description": "Elige un archivo del árbol para empezar a editar.",
   "contextRail.surface.editor.description": "Editar archivos del proyecto",
   "contextRail.surface.git.description": "Commits, ramas y pull requests",
-  "contextRail.surface.git.changesCountAria": "{label}, {count} archivos modificados",
-  "contextRail.surface.git.changesCountTooltip": "{count} archivos modificados",
+  "contextRail.surface.git.changesCountAriaSingle": "{label}, {count} archivo modificado",
+  "contextRail.surface.git.changesCountAriaPlural": "{label}, {count} archivos modificados",
+  "contextRail.surface.git.changesCountTooltipSingle": "{count} archivo modificado",
+  "contextRail.surface.git.changesCountTooltipPlural": "{count} archivos modificados",
   "contextRail.surface.terminal.description": "Terminal integrada",
   "contextRail.surface.diff.description": "Revisar cambios en curso",
   "contextPanel.mode.walkthrough": "Recorrido",

packages/ui/src/lib/i18n/messages/fr.ts

@@ -931,8 +931,10 @@ export const dict = {
   'contextPanel.editorEmpty.description': 'Choisissez un fichier dans l’arborescence pour commencer.',
   'contextRail.surface.editor.description': 'Modifier les fichiers du projet',
   'contextRail.surface.git.description': 'Commits, branches et pull requests',
-  'contextRail.surface.git.changesCountAria': '{label}, {count} fichiers modifiés',
-  'contextRail.surface.git.changesCountTooltip': '{count} fichiers modifiés',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}, {count} fichier modifié',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}, {count} fichiers modifiés',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} fichier modifié',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} fichiers modifiés',
   'contextRail.surface.terminal.description': 'Terminal intégré',
   'contextRail.surface.diff.description': 'Passer en revue les modifications',
   'contextPanel.mode.walkthrough': 'Parcours',

packages/ui/src/lib/i18n/messages/ja.ts

@@ -1103,8 +1103,10 @@ export const dict: Record<I18nKey, string> = {
   'contextPanel.editorEmpty.description': 'ツリーからファイルを選んで編集を始めましょう。',
   'contextRail.surface.editor.description': 'プロジェクトのファイルを編集',
   'contextRail.surface.git.description': 'コミット・ブランチ・プルリクエスト',
-  'contextRail.surface.git.changesCountAria': '{label}、変更ファイル{count}件',
-  'contextRail.surface.git.changesCountTooltip': '変更ファイル{count}件',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}、変更ファイル{count}件',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}、変更ファイル{count}件',
+  'contextRail.surface.git.changesCountTooltipSingle': '変更ファイル{count}件',
+  'contextRail.surface.git.changesCountTooltipPlural': '変更ファイル{count}件',
   'contextRail.surface.terminal.description': '内蔵ターミナル',
   'contextRail.surface.diff.description': '作業中の変更をレビュー',
   'contextPanel.mode.walkthrough': 'ウォークスルー',

packages/ui/src/lib/i18n/messages/ko.ts

@@ -1107,8 +1107,10 @@ export const dict: Record<I18nKey, string> = {
   'contextPanel.editorEmpty.description': '트리에서 파일을 선택해 편집을 시작하세요.',
   'contextRail.surface.editor.description': '프로젝트 파일 편집',
   'contextRail.surface.git.description': '커밋, 브랜치, 풀 리퀘스트',
-  'contextRail.surface.git.changesCountAria': '{label}, 변경된 파일 {count}개',
-  'contextRail.surface.git.changesCountTooltip': '변경된 파일 {count}개',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}, 변경된 파일 {count}개',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}, 변경된 파일 {count}개',
+  'contextRail.surface.git.changesCountTooltipSingle': '변경된 파일 {count}개',
+  'contextRail.surface.git.changesCountTooltipPlural': '변경된 파일 {count}개',
   'contextRail.surface.terminal.description': '내장 터미널',
   'contextRail.surface.diff.description': '작업 중인 변경 사항 검토',
   'contextPanel.mode.walkthrough': '워크스루',

packages/ui/src/lib/i18n/messages/pl.ts

@@ -1419,8 +1419,10 @@ export const dict: Record<I18nKey, string> = {
   'contextPanel.editorEmpty.description': 'Wybierz plik z drzewa, aby rozpocząć edycję.',
   'contextRail.surface.editor.description': 'Edytuj pliki projektu',
   'contextRail.surface.git.description': 'Commity, gałęzie i pull requesty',
-  'contextRail.surface.git.changesCountAria': '{label}, {count} zmienionych plików',
-  'contextRail.surface.git.changesCountTooltip': '{count} zmienionych plików',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}, {count} zmieniony plik',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}, {count} zmienionych plików',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} zmieniony plik',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} zmienionych plików',
   'contextRail.surface.terminal.description': 'Wbudowany terminal',
   'contextRail.surface.diff.description': 'Przeglądaj bieżące zmiany',
   'contextPanel.mode.walkthrough': 'Przewodnik',

packages/ui/src/lib/i18n/messages/pt-BR.ts

@@ -1107,8 +1107,10 @@ export const dict: Record<I18nKey, string> = {
   "contextPanel.editorEmpty.description": "Escolha um arquivo na árvore para começar a editar.",
   "contextRail.surface.editor.description": "Editar arquivos do projeto",
   "contextRail.surface.git.description": "Commits, branches e pull requests",
-  "contextRail.surface.git.changesCountAria": "{label}, {count} arquivos modificados",
-  "contextRail.surface.git.changesCountTooltip": "{count} arquivos modificados",
+  "contextRail.surface.git.changesCountAriaSingle": "{label}, {count} arquivo modificado",
+  "contextRail.surface.git.changesCountAriaPlural": "{label}, {count} arquivos modificados",
+  "contextRail.surface.git.changesCountTooltipSingle": "{count} arquivo modificado",
+  "contextRail.surface.git.changesCountTooltipPlural": "{count} arquivos modificados",
   "contextRail.surface.terminal.description": "Terminal integrado",
   "contextRail.surface.diff.description": "Revisar alterações em andamento",
   "contextPanel.mode.walkthrough": "Percurso",

packages/ui/src/lib/i18n/messages/uk.ts

@@ -1107,8 +1107,10 @@ export const dict: Record<I18nKey, string> = {
   "contextPanel.editorEmpty.description": "Виберіть файл у дереві, щоб почати редагування.",
   "contextRail.surface.editor.description": "Редагування файлів проєкту",
   "contextRail.surface.git.description": "Коміти, гілки та pull request-и",
-  "contextRail.surface.git.changesCountAria": "{label}, {count} змінених файлів",
-  "contextRail.surface.git.changesCountTooltip": "{count} змінених файлів",
+  "contextRail.surface.git.changesCountAriaSingle": "{label}, {count} змінений файл",
+  "contextRail.surface.git.changesCountAriaPlural": "{label}, {count} змінених файлів",
+  "contextRail.surface.git.changesCountTooltipSingle": "{count} змінений файл",
+  "contextRail.surface.git.changesCountTooltipPlural": "{count} змінених файлів",
   "contextRail.surface.terminal.description": "Вбудований термінал",
   "contextRail.surface.diff.description": "Перегляд поточних змін",
   "contextPanel.mode.walkthrough": "Розбір",

packages/ui/src/lib/i18n/messages/zh-CN.ts

@@ -1107,8 +1107,10 @@ export const dict: Record<I18nKey, string> = {
   'contextPanel.editorEmpty.description': '从文件树中选择一个文件开始编辑。',
   'contextRail.surface.editor.description': '编辑项目文件',
   'contextRail.surface.git.description': '提交、分支和拉取请求',
-  'contextRail.surface.git.changesCountAria': '{label}，{count} 个更改的文件',
-  'contextRail.surface.git.changesCountTooltip': '{count} 个更改的文件',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}，{count} 个更改的文件',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}，{count} 个更改的文件',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} 个更改的文件',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} 个更改的文件',
   'contextRail.surface.terminal.description': '内置终端',
   'contextRail.surface.diff.description': '查看工作区更改',
   'contextPanel.mode.walkthrough': '导读',

packages/ui/src/lib/i18n/messages/zh-TW.ts

@@ -1119,8 +1119,10 @@ export const dict: Record<I18nKey, string> = {
   'contextPanel.editorEmpty.description': '從檔案樹選擇檔案開始編輯。',
   'contextRail.surface.editor.description': '編輯專案檔案',
   'contextRail.surface.git.description': '提交、分支與拉取請求',
-  'contextRail.surface.git.changesCountAria': '{label}，{count} 個變更的檔案',
-  'contextRail.surface.git.changesCountTooltip': '{count} 個變更的檔案',
+  'contextRail.surface.git.changesCountAriaSingle': '{label}，{count} 個變更的檔案',
+  'contextRail.surface.git.changesCountAriaPlural': '{label}，{count} 個變更的檔案',
+  'contextRail.surface.git.changesCountTooltipSingle': '{count} 個變更的檔案',
+  'contextRail.surface.git.changesCountTooltipPlural': '{count} 個變更的檔案',
   'contextRail.surface.terminal.description': '內建終端機',
   'contextRail.surface.diff.description': '檢視工作區變更',
   'contextPanel.mode.walkthrough': '導讀',