feat(usage): surface Grok Build session source in usage UI

Add the grok_session icon to DataSourceBar and the Grok Build labels
for the app filter and data-source breakdown in all four locales
(zh/en/ja/zh-TW).

src/components/usage/DataSourceBar.tsx

@@ -18,6 +18,7 @@ const DATA_SOURCE_ICONS: Record<string, React.ReactNode> = {
   codex_session: <FileText className="h-3.5 w-3.5" />,
   gemini_session: <FileText className="h-3.5 w-3.5" />,
   opencode_session: <FileText className="h-3.5 w-3.5" />,
+  grok_session: <FileText className="h-3.5 w-3.5" />,
 };
 
 export function DataSourceBar({ refreshIntervalMs }: DataSourceBarProps) {

src/i18n/locales/en.json

@@ -1501,7 +1501,8 @@
       "claude": "Claude Code",
       "codex": "Codex",
       "gemini": "Gemini",
-      "opencode": "OpenCode"
+      "opencode": "OpenCode",
+      "grokbuild": "Grok Build"
     },
     "rawInputLabel": "Raw",
     "dataSources": "Data Sources",
@@ -1511,7 +1512,8 @@
       "codex_db": "Codex DB",
       "codex_session": "Codex Session",
       "gemini_session": "Gemini Session",
-      "opencode_session": "OpenCode Session"
+      "opencode_session": "OpenCode Session",
+      "grok_session": "Grok Build Session"
     },
     "sessionSync": {
       "trigger": "Sync session logs",

src/i18n/locales/ja.json

@@ -1501,7 +1501,8 @@
       "claude": "Claude Code",
       "codex": "Codex",
       "gemini": "Gemini",
-      "opencode": "OpenCode"
+      "opencode": "OpenCode",
+      "grokbuild": "Grok Build"
     },
     "rawInputLabel": "原始",
     "dataSources": "データソース",
@@ -1511,7 +1512,8 @@
       "codex_db": "Codex DB",
       "codex_session": "Codex セッション",
       "gemini_session": "Gemini セッション",
-      "opencode_session": "OpenCode セッション"
+      "opencode_session": "OpenCode セッション",
+      "grok_session": "Grok Build セッション"
     },
     "sessionSync": {
       "trigger": "セッションログを同期",

src/i18n/locales/zh-TW.json

@@ -1473,7 +1473,8 @@
       "claude": "Claude Code",
       "codex": "Codex",
       "gemini": "Gemini",
-      "opencode": "OpenCode"
+      "opencode": "OpenCode",
+      "grokbuild": "Grok Build"
     },
     "rawInputLabel": "原始",
     "dataSources": "資料來源",
@@ -1483,7 +1484,8 @@
       "codex_db": "Codex 資料庫",
       "codex_session": "Codex 工作階段日誌",
       "gemini_session": "Gemini 工作階段日誌",
-      "opencode_session": "OpenCode 工作階段日誌"
+      "opencode_session": "OpenCode 工作階段日誌",
+      "grok_session": "Grok Build 工作階段日誌"
     },
     "sessionSync": {
       "trigger": "同步工作階段日誌",

src/i18n/locales/zh.json

@@ -1501,7 +1501,8 @@
       "claude": "Claude Code",
       "codex": "Codex",
       "gemini": "Gemini",
-      "opencode": "OpenCode"
+      "opencode": "OpenCode",
+      "grokbuild": "Grok Build"
     },
     "rawInputLabel": "原始",
     "dataSources": "数据来源",
@@ -1511,7 +1512,8 @@
       "codex_db": "Codex 数据库",
       "codex_session": "Codex 会话日志",
       "gemini_session": "Gemini 会话日志",
-      "opencode_session": "OpenCode 会话日志"
+      "opencode_session": "OpenCode 会话日志",
+      "grok_session": "Grok Build 会话日志"
     },
     "sessionSync": {
       "trigger": "同步会话日志",