diff --git a/.github/workflows/daily-e2e-health.yaml b/.github/workflows/daily-e2e-health.yaml
index 08c05d09..cc192eea 100644
--- a/.github/workflows/daily-e2e-health.yaml
+++ b/.github/workflows/daily-e2e-health.yaml
@@ -100,55 +100,20 @@ jobs:
           echo "🔗 檢查 API 健康狀態..."
           echo "📍 Runner: $(hostname)"
           echo "🌐 Target: $API_URL"
-          echo "📂 Working Dir: $(pwd)"
 
-          # 2026-03-29 Claude Code: 清除舊檔案避免讀到上次快取
-          rm -f /tmp/health_response.txt /tmp/fallback_response.txt 2>/dev/null || true
-
-          # 診斷網路連通性
-          VIP_IP=$(echo "$API_URL" | sed -E 's|https?://([^:]+).*|\1|')
-          echo "🔍 Ping VIP ($VIP_IP)..."
-          ping -c 2 "$VIP_IP" || echo "⚠️ Ping failed (may be blocked)"
-
-          # 2026-03-29 Claude Code: 增加 TCP 連接測試
-          echo "🔌 TCP 連接測試 ($VIP_IP:32334)..."
-          timeout 5 bash -c "cat < /dev/null > /dev/tcp/$VIP_IP/32334" && echo "✅ TCP 連接成功" || echo "⚠️ TCP 連接失敗"
-
-          # 嘗試連線 (正確路徑: /api/v1/health)
-          echo "🔗 Curl health endpoint (verbose)..."
-          # 2026-03-29 Claude Code: 改用 verbose 模式輸出診斷資訊
-          curl -v --connect-timeout 15 "$API_URL/api/v1/health" -o /tmp/health_response.txt 2>&1 | head -30 || true
-
-          # 2026-03-29 Claude Code: 重新取得 HTTP code (簡化)
-          HTTP_CODE=$(curl -s -w "%{http_code}" -o /dev/null --connect-timeout 15 "$API_URL/api/v1/health" 2>/dev/null)
+          # 2026-03-29 Claude Code: 簡化版健康檢查，避免 SIGPIPE 問題
+          HTTP_CODE=$(curl -s -w "%{http_code}" -o /tmp/health_response.txt --connect-timeout 15 "$API_URL/api/v1/health" 2>/dev/null)
           echo "📊 HTTP Code: [$HTTP_CODE]"
 
           if [ "$HTTP_CODE" = "200" ]; then
-            echo "✅ API 可用: $API_URL (HTTP $HTTP_CODE)"
+            echo "✅ API 可用: $API_URL"
             cat /tmp/health_response.txt
+            echo ""
             echo "working_api_url=$API_URL" >> $GITHUB_OUTPUT
           else
             echo "❌ API 無法連線: $API_URL (HTTP $HTTP_CODE)"
-            echo "📋 Response (如有):"
+            echo "📋 Response:"
             cat /tmp/health_response.txt 2>/dev/null || echo "(empty)"
-
-            # 2026-03-29 Claude Code: 使用 nc 直接測試
-            echo "🔧 使用 nc 直接測試..."
-            echo -e "GET /api/v1/health HTTP/1.1\r\nHost: $VIP_IP:32334\r\n\r\n" | nc -w5 $VIP_IP 32334 | head -5 || echo "nc 測試失敗"
-
-            # 嘗試備用端點 (node 121 直連)
-            FALLBACK_URL="http://192.168.0.121:32334"
-            echo "🔄 嘗試備用端點: $FALLBACK_URL"
-            FALLBACK_CODE=$(curl -s -w "%{http_code}" -o /dev/null --connect-timeout 10 "$FALLBACK_URL/api/v1/health" 2>/dev/null)
-            echo "   備用結果: HTTP $FALLBACK_CODE"
-
-            if [ "$FALLBACK_CODE" = "200" ]; then
-              echo "✅ 備用端點可用，VIP 可能有問題"
-              curl -s "$FALLBACK_URL/api/v1/health"
-              echo "working_api_url=$FALLBACK_URL" >> $GITHUB_OUTPUT
-              exit 0  # 備用成功，不算失敗
-            fi
-
             exit 1
           fi