chore(lint): 清理 7 項 ESLint 警告

- useApprovalSSE.ts: 標記未使用的 fallbackToPolling
- useErrors.ts: 移除未使用的 ErrorListResponse import
- dashboard.store.ts: 標記 SSE event 參數
- agent.store.ts: 加註 SSE 串流迴圈說明
- approval.store.ts: 改用正規 type import
- terminal.store.ts: 改用 inline type import
- OmniTerminal.tsx: 改用 type import

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/src/components/terminal/OmniTerminal.tsx

@@ -28,7 +28,7 @@ import {
   useIsConnected,
   useTerminalMessages,
   useIsTerminalOpen,
-  TerminalMessage,
+  type TerminalMessage,
 } from '@/stores/terminal.store'
 import { GenUIRenderer, isRegistered } from '@/components/genui'
 import { Z_INDEX } from '@/lib/constants/z-index'