refactor(scheduling): simplify SwapPreview layout, remove verbose reason

- Remove type badge, reason section — too verbose
- Two clean white cards connected by arrow (swap diagram)
- Result section: predicted mileage, target, conclusion badge
- Tighter spacing, no redundant labels
- Professional tone, no childish wording

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/modules/scheduling/SwapPreview.tsx

@@ -1,6 +1,5 @@
 import { useState } from 'react';
-import { ArrowDown, CheckCircle, Send, X } from 'lucide-react';
-import { motion } from 'motion/react';
+import { ArrowDownUp, CheckCircle, Send, X } from 'lucide-react';
 import { sendNotify } from './api';
 import type { SchedulingSuggestion, CandidateVehicle } from './types';
 import Blur from '../../components/Blur';
@@ -25,150 +24,108 @@ export default function SwapPreview({ suggestion: s, candidate: c, onClose, onSu
   const [sending, setSending] = useState(false);
   const [sent, setSent] = useState(false);
   const v = s.currentVehicle;
-  const isRescue = s.type === 'rescue_hopeless';
 
   const handleSend = async () => {
     if (sending || sent) return;
     setSending(true);
     try {
-      const result = await sendNotify({
-        suggestionId: s.id,
-        currentPlate: v.plateNumber,
-        candidatePlate: c.plateNumber,
-      });
-      if (result.success) {
-        setSent(true);
-        onSuccess();
-      } else {
-        alert(result.message || '发送失败');
-      }
-    } catch {
-      alert('网络错误，请重试');
-    } finally {
-      setSending(false);
-    }
+      const result = await sendNotify({ suggestionId: s.id, currentPlate: v.plateNumber, candidatePlate: c.plateNumber });
+      if (result.success) { setSent(true); onSuccess(); } else { alert(result.message || '发送失败'); }
+    } catch { alert('网络错误'); } finally { setSending(false); }
   };
 
   return (
-    <div className="fixed inset-0 z-[80] bg-white flex flex-col">
-      {/* Top bar */}
-      <div className="flex items-center justify-between px-4 py-3 border-b border-slate-100 flex-shrink-0">
+    <div className="fixed inset-0 z-[80] bg-[#F0F4F8] flex flex-col">
+      {/* Header */}
+      <div className="flex items-center justify-between px-5 py-3 bg-white border-b border-slate-200 flex-shrink-0">
         <span className="text-sm font-bold text-slate-800">车辆替换方案</span>
-        <button onClick={onClose} className="p-1 text-slate-400 hover:text-slate-600 cursor-pointer">
-          <X size={20} />
-        </button>
+        <button onClick={onClose} className="p-1 text-slate-400 hover:text-slate-600 cursor-pointer"><X size={20} /></button>
       </div>
 
-      {/* Content — screenshot-friendly, no scroll needed */}
-      <div className="flex-1 flex flex-col items-center justify-center px-6 py-4 gap-4 overflow-auto">
+      {/* Content */}
+      <div className="flex-1 overflow-auto px-5 py-5">
+        <div className="max-w-sm mx-auto space-y-4">
 
-        {/* Swap type badge */}
-        <div className={`text-xs font-bold px-3 py-1 rounded-full ${
-          isRescue ? 'bg-blue-50 text-blue-700' : 'bg-orange-50 text-orange-700'
-        }`}>
-          {isRescue ? '里程低·换走此车' : '里程高·换下此车'}
-        </div>
-
-        {/* === Swap Diagram === */}
-        <div className="w-full max-w-sm space-y-3">
-
-          {/* Current vehicle (换下/换走) */}
-          <div className={`rounded-2xl p-4 border ${isRescue ? 'bg-blue-50 border-blue-200' : 'bg-orange-50 border-orange-200'}`}>
-            <div className="text-[10px] font-bold text-slate-400 uppercase mb-2">
-              {isRescue ? '换走车辆' : '换下车辆'}
+          {/* === Swap Cards === */}
+          <div className="relative">
+            {/* Current vehicle */}
+            <div className="bg-white rounded-2xl p-4 border border-slate-200 shadow-sm">
+              <div className="flex items-start justify-between">
+                <div>
+                  <div className="text-lg font-black text-slate-900 font-mono"><Blur>{v.plateNumber}</Blur></div>
+                  <div className="text-[10px] text-slate-400 mt-0.5">{v.vehicleType} · {v.targetName}</div>
+                </div>
+                <div className="text-right">
+                  <div className="text-base font-black text-slate-800">{fmtKm(v.currentYearMileage)}<span className="text-[9px] text-slate-400 ml-0.5">km</span></div>
+                  <div className="text-[10px] text-slate-400">考核 {fmtKm(v.yearTarget)} km</div>
+                </div>
+              </div>
+              <div className="flex items-center gap-3 mt-2.5 text-[10px] text-slate-500">
+                <span><Blur>{v.customer || '-'}</Blur></span>
+                <span>日均 <b className="text-slate-700">{Math.round(v.customerAvgDaily)}</b></span>
+                <span>完成 <b className={v.completionRate >= 1 ? 'text-emerald-600' : 'text-rose-500'}>{fmtRate(v.completionRate)}</b></span>
+              </div>
             </div>
-            <div className="flex items-center justify-between">
+
+            {/* Arrow bridge */}
+            <div className="flex justify-center -my-3 relative z-10">
+              <div className="w-10 h-10 rounded-full bg-slate-800 flex items-center justify-center shadow-lg">
+                <ArrowDownUp size={16} className="text-white" />
+              </div>
+            </div>
+
+            {/* Replacement vehicle */}
+            <div className="bg-white rounded-2xl p-4 border border-emerald-300 shadow-sm">
+              <div className="flex items-start justify-between">
+                <div>
+                  <div className="text-lg font-black text-slate-900 font-mono"><Blur>{c.plateNumber}</Blur></div>
+                  <div className="text-[10px] text-slate-400 mt-0.5">{c.vehicleType} · {c.targetName || '库存'} · {c.region}</div>
+                </div>
+                <div className="text-right">
+                  <div className="text-base font-black text-slate-800">{fmtKm(c.totalMileage)}<span className="text-[9px] text-slate-400 ml-0.5">km</span></div>
+                  <div className="text-[10px] text-slate-400">考核 {c.yearTarget ? fmtKm(c.yearTarget) : '-'} km</div>
+                </div>
+              </div>
+              <div className="flex items-center gap-3 mt-2.5 text-[10px] text-slate-500">
+                <span>缺口 <b className="text-rose-500">{fmtKm(c.mileageGap)}</b></span>
+              </div>
+            </div>
+          </div>
+
+          {/* === Result === */}
+          <div className="bg-white rounded-2xl p-4 border border-slate-200 shadow-sm">
+            <div className="text-[10px] font-bold text-slate-400 uppercase mb-3">替换后预测</div>
+            <div className="flex items-end gap-6">
               <div>
-                <div className="text-lg font-black text-slate-900 font-mono"><Blur>{v.plateNumber}</Blur></div>
-                <div className="text-[10px] text-slate-500 mt-0.5">{v.vehicleType} · {v.targetName}</div>
+                <div className="text-[9px] text-slate-400 mb-0.5">预测年终里程</div>
+                <div className="text-xl font-black text-slate-800">{fmtKm(c.predictedAfterSwap)} <span className="text-[10px] font-normal text-slate-400">km</span></div>
               </div>
-              <div className="text-right">
-                <div className="text-sm font-black text-slate-700">{fmtKm(v.currentYearMileage)} <span className="text-[9px] text-slate-400">km</span></div>
-                <div className="text-[10px] text-slate-400">考核 {fmtKm(v.yearTarget)} km</div>
-              </div>
-            </div>
-            <div className="flex items-center gap-2 mt-2 text-[10px] text-slate-500">
-              <span>客户 <b className="text-slate-700"><Blur>{v.customer || '-'}</Blur></b></span>
-              <span>日均 <b className="text-slate-700">{Math.round(v.customerAvgDaily)}</b> km</span>
-              <span>完成 <b className={v.completionRate >= 1 ? 'text-emerald-600' : 'text-rose-500'}>{fmtRate(v.completionRate)}</b></span>
-            </div>
-          </div>
-
-          {/* Arrow */}
-          <div className="flex justify-center">
-            <div className="w-10 h-10 rounded-full bg-slate-800 flex items-center justify-center shadow-lg">
-              <ArrowDown size={18} className="text-white" />
-            </div>
-          </div>
-
-          {/* Replacement vehicle (换上) */}
-          <div className="rounded-2xl p-4 border bg-emerald-50 border-emerald-200">
-            <div className="text-[10px] font-bold text-slate-400 uppercase mb-2">
-              换上车辆
-            </div>
-            <div className="flex items-center justify-between">
               <div>
-                <div className="text-lg font-black text-slate-900 font-mono"><Blur>{c.plateNumber}</Blur></div>
-                <div className="text-[10px] text-slate-500 mt-0.5">{c.vehicleType} · {c.targetName || '库存'}</div>
+                <div className="text-[9px] text-slate-400 mb-0.5">考核目标</div>
+                <div className="text-xl font-black text-slate-800">{c.yearTarget ? fmtKm(c.yearTarget) : '-'} <span className="text-[10px] font-normal text-slate-400">km</span></div>
               </div>
-              <div className="text-right">
-                <div className="text-sm font-black text-slate-700">{fmtKm(c.totalMileage)} <span className="text-[9px] text-slate-400">km</span></div>
-                <div className="text-[10px] text-slate-400">考核 {c.yearTarget ? fmtKm(c.yearTarget) : '-'} km</div>
-              </div>
-            </div>
-            <div className="flex items-center gap-2 mt-2 text-[10px] text-slate-500">
-              <span>缺口 <b className="text-rose-500">{fmtKm(c.mileageGap)}</b> km</span>
-              <span>区域 <b className="text-slate-700">{c.region}</b></span>
-            </div>
-          </div>
-        </div>
-
-        {/* === Reason === */}
-        <div className="w-full max-w-sm bg-slate-50 rounded-xl p-3 border border-slate-200">
-          <div className="text-[10px] font-bold text-slate-500 uppercase mb-1">替换原因</div>
-          <div className="text-xs text-slate-700 leading-relaxed whitespace-pre-line">{s.reason}</div>
-        </div>
-
-        {/* === Conclusion === */}
-        <div className="w-full max-w-sm bg-emerald-50 rounded-xl p-3 border border-emerald-200">
-          <div className="text-[10px] font-bold text-emerald-600 uppercase mb-1">替换后预测</div>
-          <div className="flex items-center justify-between text-xs">
-            <span className="text-slate-600">
-              <Blur>{c.plateNumber}</Blur> 换到客户「<Blur>{v.customer || '-'}</Blur>」后
-            </span>
-          </div>
-          <div className="flex items-center gap-4 mt-2">
-            <div>
-              <div className="text-[9px] text-slate-400">预测年终</div>
-              <div className="text-base font-black text-emerald-700">{fmtKm(c.predictedAfterSwap)} km</div>
-            </div>
-            <div>
-              <div className="text-[9px] text-slate-400">考核目标</div>
-              <div className="text-base font-black text-slate-700">{c.yearTarget ? fmtKm(c.yearTarget) : '-'} km</div>
-            </div>
-            <div>
-              <div className="text-[9px] text-slate-400">结论</div>
-              <div className={`text-base font-black ${c.canQualifyAfterSwap ? 'text-emerald-600' : 'text-amber-600'}`}>
+              <div className={`text-sm font-black px-3 py-1 rounded-lg ${c.canQualifyAfterSwap ? 'bg-emerald-50 text-emerald-600' : 'bg-amber-50 text-amber-600'}`}>
                 {c.canQualifyAfterSwap ? '可达标' : '需关注'}
               </div>
             </div>
           </div>
+
         </div>
       </div>
 
-      {/* Bottom action */}
-      <div className="px-6 pb-6 pt-2 flex-shrink-0">
-        <button
-          onClick={handleSend}
-          disabled={sending || sent}
-          className={`w-full flex items-center justify-center gap-2 py-3 rounded-xl text-sm font-bold transition-all cursor-pointer ${
-            sent
-              ? 'bg-emerald-100 text-emerald-600'
-              : 'bg-slate-800 hover:bg-slate-900 text-white active:scale-[0.98] shadow-lg'
-          }`}
-        >
-          {sent ? <><CheckCircle size={16} /> 通知已发送</> : <><Send size={16} /> 发送替换通知</>}
-        </button>
+      {/* Bottom */}
+      <div className="px-5 pb-6 pt-2 flex-shrink-0 bg-[#F0F4F8]">
+        <div className="max-w-sm mx-auto">
+          <button
+            onClick={handleSend}
+            disabled={sending || sent}
+            className={`w-full flex items-center justify-center gap-2 py-3.5 rounded-xl text-sm font-bold transition-all cursor-pointer ${
+              sent ? 'bg-emerald-100 text-emerald-600' : 'bg-slate-800 hover:bg-slate-900 text-white active:scale-[0.98] shadow-lg'
+            }`}
+          >
+            {sent ? <><CheckCircle size={16} /> 已发送</> : <><Send size={16} /> 发送替换通知</>}
+          </button>
+        </div>
       </div>
     </div>
   );