feat(scheduling): history view, execute/cancel lifecycle, CSV export, 7d trend

- Add 调度记录 modal: lists notifications by status, supports 标记已执行 (with
  after-mileage + notes) and 取消 for open records
- Add CSV export of filtered suggestions (UTF-8 BOM for Excel); top candidate
  per row picked by same-region > can-qualify preference
- Compute customer 7-day average alongside 30-day baseline in a single query;
  show trend indicator (up/down/flat) next to 客户日均 in list and detail card

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/modules/scheduling/SchedulingModule.tsx

@@ -1,10 +1,12 @@
 import { useState, useEffect, useCallback, useMemo, useRef } from 'react';
-import { Filter, RotateCcw, X, Search, ChevronDown, CheckSquare, Send } from 'lucide-react';
+import { Filter, RotateCcw, X, Search, ChevronDown, CheckSquare, Send, Clock, Download } from 'lucide-react';
 import { motion, AnimatePresence } from 'motion/react';
 import { fetchSuggestions, sendNotifyBatch } from './api';
 import type { SchedulingResponse, SchedulingSuggestion, CandidateVehicle } from './types';
 import SuggestionList from './SuggestionList';
 import SuggestionDetail from './SuggestionDetail';
+import NotificationHistory from './NotificationHistory';
+import { exportSuggestionsCsv } from './csv-export';
 import Blur from '../../components/Blur';
 
 type TypeFilter = 'all' | 'qualified' | 'hopeless';
@@ -165,6 +167,7 @@ export default function SchedulingModule() {
   const [showBatchConfirm, setShowBatchConfirm] = useState(false);
   const [batchInFlight, setBatchInFlight] = useState(false);
   const [batchResultMsg, setBatchResultMsg] = useState<string | null>(null);
+  const [showHistory, setShowHistory] = useState(false);
 
   const loadData = useCallback(async () => {
     setLoading(true);
@@ -346,6 +349,21 @@ export default function SchedulingModule() {
                   className="p-1.5 text-slate-400 hover:text-slate-600 transition-colors rounded-lg hover:bg-slate-50 cursor-pointer">
                   <RotateCcw size={15} className={loading ? 'animate-spin' : ''} />
                 </button>
+                <button
+                  onClick={() => exportSuggestionsCsv(filteredSuggestions)}
+                  disabled={filteredSuggestions.length === 0}
+                  className="p-1.5 text-slate-400 hover:text-slate-600 transition-colors rounded-lg hover:bg-slate-50 cursor-pointer disabled:opacity-40 disabled:cursor-not-allowed"
+                  title="导出 CSV"
+                >
+                  <Download size={15} />
+                </button>
+                <button
+                  onClick={() => setShowHistory(true)}
+                  className="p-1.5 text-slate-400 hover:text-slate-600 transition-colors rounded-lg hover:bg-slate-50 cursor-pointer"
+                  title="调度记录"
+                >
+                  <Clock size={15} />
+                </button>
                 <button
                   onClick={() => {
                     if (selectMode) exitSelectMode();
@@ -486,6 +504,10 @@ export default function SchedulingModule() {
           <SuggestionDetail suggestion={selectedSuggestion} onClose={() => setSelectedSuggestion(null)} onNotifySuccess={handleNotifySuccess} />
         )}
 
+        {showHistory && (
+          <NotificationHistory onClose={() => setShowHistory(false)} onChange={loadData} />
+        )}
+
         {/* Batch action bar */}
         <AnimatePresence>
           {selectMode && (