Revert "chore: remove all trend indicators from StatCards"

This reverts commit f258531964.

src/components/views/EfficiencyView.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { AreaChart, Area, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, BarChart, Bar, Legend } from 'recharts';
+import { AreaChart, Area, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, BarChart, Bar, Legend, Cell } from 'recharts';
 import { StatCard } from '../ui/StatCard';
 import { Activity, Target, TrendingUp, Zap, Clock, Radio, AlertCircle } from 'lucide-react';
 
@@ -60,6 +60,7 @@ export function EfficiencyView() {
           value="~4.2 小时"
           subValue="主要由预约时限测算出的无效排队节省时间"
           icon={Clock}
+          trend={-42}
         />
         <StatCard
           title="平均承载饱和度 (预估)"

src/components/views/OverallView.tsx

@@ -51,12 +51,14 @@ export function OverallView() {
           value="65 单"
           subValue="嘉锦与嘉燃双核驱动，占据主流"
           icon={Calendar}
+          trend={-47}
         />
         <StatCard
           title="现阶段活跃运营站点"
           value="8 个"
           subValue="覆盖嘉燃、嘉锦、嘉燃经开、如皋、桐乡、花桥、常熟、嘉善"
           icon={MapPin}
+          trend={14}
         />
         <StatCard
           title="近期活跃司机数量"

src/components/views/UsersView.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, Legend, BarChart, Bar } from 'recharts';
+import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, Legend, BarChart, Bar, Cell } from 'recharts';
 import { StatCard } from '../ui/StatCard';
 import { Users, Truck, Smartphone } from 'lucide-react';
 
@@ -16,12 +16,12 @@ const driverGrowth = [
 ];
 
 const driverByStation = [
-  { name: '嘉兴嘉锦', value: 10, fill: '#f59e0b' },
-  { name: '嘉兴嘉燃', value: 8, fill: '#94a3b8' },
-  { name: '嘉燃经开', value: 5, fill: '#94a3b8' },
-  { name: '如皋华神', value: 3, fill: '#94a3b8' },
-  { name: '桐乡绿能', value: 2, fill: '#94a3b8' },
-  { name: '花桥/嘉善等', value: 2, fill: '#94a3b8' },
+  { name: '嘉兴嘉锦', value: 10 },
+  { name: '嘉兴嘉燃', value: 8 },
+  { name: '嘉燃经开', value: 5 },
+  { name: '如皋华神', value: 3 },
+  { name: '桐乡绿能', value: 2 },
+  { name: '花桥/嘉善等', value: 2 },
 ];
 
 export function UsersView() {
@@ -46,6 +46,7 @@ export function UsersView() {
           value="59 %"
           subValue="公司自营与核心车队"
           icon={Users}
+          trend={-36}
         />
         <StatCard
           title="近期最佳外拓来源区"
@@ -87,7 +88,11 @@ export function UsersView() {
                   <XAxis type="number" hide />
                   <YAxis dataKey="name" type="category" axisLine={false} tickLine={false} tick={{fill: '#475569', fontSize: 12, fontWeight: 500}} width={80} />
                   <Tooltip cursor={{fill: '#f8fafc'}} contentStyle={{ borderRadius: '12px', border: '1px solid #e2e8f0' }}/>
-                  <Bar dataKey="value" radius={[0, 6, 6, 0]} barSize={28} />
+                  <Bar dataKey="value" radius={[0, 6, 6, 0]} barSize={28}>
+                    {driverByStation.map((entry, index) => (
+                      <Cell key={`cell-${index}`} fill={index === 0 ? '#f59e0b' : '#94a3b8'} />
+                    ))}
+                  </Bar>
                 </BarChart>
               </ResponsiveContainer>
           </div>