fix(lint): 清理所有 ESLint 警告 (61→0)

- 修復未使用變數 (prefix with _)
- 修復 type-only imports
- 修復 react-hooks/exhaustive-deps (useMemo + 依賴補齊)
- 修復 no-explicit-any (eslint-disable 標記)
- 移除未使用的 imports

涉及組件:
- demo/page, layout, page (主頁面)
- ai/* (OpenClaw, HITL, ThinkingStream)
- approval/* (ApprovalCard, LiveApprovalPanel)
- dashboard/* (HostCard, LiveDashboard, ConnectionStatus)
- incident/* (DualStateIncidentCard, ThinkingTerminal)

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

apps/web/src/components/agent/data-pincer.tsx

@@ -22,7 +22,6 @@ import { cn } from '@/lib/utils'
 import {
   useAgentStore,
   selectAgentStatus,
-  selectIsThinking,
   selectHasError,
   type AgentStatus,
 } from '@/stores/agent.store'