feat(terminal): 建立 /terminal 路由頁 + 補全 Sidebar 全部 i18n nav keys

- 新增 terminal/page.tsx (自動開啟 OmniTerminal)
- zh-TW/en nav 補全 18 個缺失 key (alerts/monitoring/apm/...)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/src/app/[locale]/terminal/page.tsx

@@ -0,0 +1,36 @@
+'use client'
+
+/**
+ * Terminal Page - Omni-Terminal 專頁
+ * ===================================
+ * 直接展開 OmniTerminal，全頁模式
+ * 快捷鍵 CMD+J 在任何頁面都可呼叫（全局），
+ * 此頁提供直接訪問入口。
+ *
+ * @created 2026-04-01 ogt
+ * @see ADR-031 Omni-Terminal SSE Architecture
+ */
+
+import { AppLayout } from '@/components/layout'
+import { OmniTerminal } from '@/components/terminal/OmniTerminal'
+import { useEffect } from 'react'
+import { useTerminalStore } from '@/stores/terminal.store'
+
+export default function TerminalPage({
+  params,
+}: {
+  params: { locale: string }
+}) {
+  const { openTerminal } = useTerminalStore()
+
+  // 進入頁面自動開啟 Terminal
+  useEffect(() => {
+    openTerminal()
+  }, [openTerminal])
+
+  return (
+    <AppLayout locale={params.locale}>
+      <OmniTerminal />
+    </AppLayout>
+  )
+}