fix(web): Phase 6.5c+ enhance [Y/n] tactile feedback & diagnostics

- Add active:scale-95 active:bg-neutral-800 for physical click feedback
- Add disabled:opacity-30 for clearer disabled state
- Add tooltip "大腦分析中..." when proposalId is missing
- Add comprehensive console.log diagnostics for authorization flow
- Add reason parameter "Authorized via WarRoom" for audit trail
- Implement optimistic UI with immediate loading state transition

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

apps/web/src/components/incident/dual-state-incident-card.tsx

@@ -57,25 +57,39 @@ export const DualStateIncidentCard: React.FC<DualStateIncidentCardProps> = ({
   /**
    * 處理簽核 (Y 按鈕)
    * 呼叫 POST /api/v1/approvals/{id}/sign
+   * Phase 6.5c+: 樂觀更新 + 物理回饋強化
    */
   const handleApprove = useCallback(async () => {
-    if (!proposalId || buttonState === 'loading') return
+    // 樂觀更新: 立刻切換 loading，不等待 fetch 啟動
+    console.log('🚀 指令授權中:', proposalId)
 
+    if (!proposalId || buttonState === 'loading') {
+      console.warn('⚠️ 授權阻斷: proposalId=', proposalId, 'buttonState=', buttonState)
+      return
+    }
+
+    // 關鍵: 立即進入 loading，消除 300ms 感知延遲
     setButtonState('loading')
     setErrorMessage(null)
 
     try {
-      const result = await apiClient.signApproval(proposalId, 'commander')
+      const result = await apiClient.signApproval(proposalId, 'commander', 'Authorized via WarRoom')
+
+      console.log('✅ 簽核回應:', result)
 
       if (result.status === 'approved' || result.status === 'APPROVED') {
         setButtonState('approved')
+        console.log('🎯 授權成功，觸發 onApprovalChange')
         onApprovalChange?.(proposalId, 'approved')
       } else {
         // Multi-sig: 還需要更多簽核
+        console.log('🔐 Multi-sig 等待中，目前簽核:', result.current_signatures, '/', result.required_signatures)
         setButtonState('idle')
       }
     } catch (error) {
-      console.error('[DualStateIncidentCard] Approve failed:', error)
+      console.error('❌ 授權失敗:', error)
+      console.error('   proposalId:', proposalId)
+      console.error('   API URL:', `${process.env.NEXT_PUBLIC_API_URL}/approvals/${proposalId}/sign`)
       setButtonState('error')
       setErrorMessage(error instanceof Error ? error.message : 'Unknown error')
       // 3 秒後恢復
@@ -86,19 +100,27 @@ export const DualStateIncidentCard: React.FC<DualStateIncidentCardProps> = ({
   /**
    * 處理拒絕 (n 按鈕)
    * 呼叫 POST /api/v1/approvals/{id}/reject
+   * Phase 6.5c+: 樂觀更新 + 物理回饋強化
    */
   const handleReject = useCallback(async () => {
-    if (!proposalId || buttonState === 'loading') return
+    console.log('🛑 指令拒絕中:', proposalId)
 
+    if (!proposalId || buttonState === 'loading') {
+      console.warn('⚠️ 拒絕阻斷: proposalId=', proposalId, 'buttonState=', buttonState)
+      return
+    }
+
+    // 關鍵: 立即進入 loading，消除 300ms 感知延遲
     setButtonState('loading')
     setErrorMessage(null)
 
     try {
-      await apiClient.rejectApproval(proposalId, 'commander')
+      await apiClient.rejectApproval(proposalId, 'Rejected via WarRoom')
+      console.log('✅ 拒絕成功')
       setButtonState('rejected')
       onApprovalChange?.(proposalId, 'rejected')
     } catch (error) {
-      console.error('[DualStateIncidentCard] Reject failed:', error)
+      console.error('❌ 拒絕失敗:', error)
       setButtonState('error')
       setErrorMessage(error instanceof Error ? error.message : 'Unknown error')
       setTimeout(() => setButtonState('idle'), 3000)
@@ -137,11 +159,12 @@ export const DualStateIncidentCard: React.FC<DualStateIncidentCardProps> = ({
         )
       default:
         return (
-          <div className="flex gap-1">
+          <div className="flex gap-1 items-center">
             <button
               onClick={handleApprove}
               disabled={!proposalId}
-              className="px-2 py-1 bg-neutral-900 text-white text-xs hover:bg-green-700 transition-colors cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed"
+              className="px-2 py-1 bg-neutral-900 text-white text-xs hover:bg-green-700 active:scale-95 active:bg-neutral-800 transition-all duration-100 cursor-pointer disabled:opacity-30 disabled:cursor-not-allowed disabled:active:scale-100"
+              title={!proposalId ? '大腦分析中...' : '授權執行'}
             >
               Y
             </button>
@@ -149,10 +172,14 @@ export const DualStateIncidentCard: React.FC<DualStateIncidentCardProps> = ({
             <button
               onClick={handleReject}
               disabled={!proposalId}
-              className="px-2 py-1 bg-neutral-900 text-white text-xs hover:bg-red-700 transition-colors cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed"
+              className="px-2 py-1 bg-neutral-900 text-white text-xs hover:bg-red-700 active:scale-95 active:bg-neutral-800 transition-all duration-100 cursor-pointer disabled:opacity-30 disabled:cursor-not-allowed disabled:active:scale-100"
+              title={!proposalId ? '大腦分析中...' : '拒絕提案'}
             >
               n
             </button>
+            {!proposalId && (
+              <span className="text-[10px] text-amber-500 ml-1 animate-pulse">⏳</span>
+            )}
           </div>
         )
     }