feat: 完成模拟交易闭环、App 与 A 股行情接入

统一单入口 Go 工程与前端依赖目录，增加后台供应商配置、候选审核、计划预算、成交冲正、持仓复盘和站内通知。接入策略版本、Python 回测、可配置 A 股公开行情及 zap 文件轮转日志，补充迁移、契约与验证。

apps/mobile/app/(tabs)/_layout.tsx

@@ -0,0 +1,12 @@
+import {Tabs} from "expo-router"
+import Ionicons from "@expo/vector-icons/Ionicons"
+import {colors} from "../../src/components/ui"
+export default function TabLayout(){
+ return <Tabs screenOptions={{headerShown:false,tabBarActiveTintColor:colors.accent,tabBarInactiveTintColor:colors.muted,tabBarStyle:{backgroundColor:colors.background,borderTopColor:colors.border},tabBarLabelStyle:{fontSize:11},tabBarItemStyle:{paddingTop:5}}}>
+  <Tabs.Screen name="index" options={{title:"首页",tabBarIcon:({color,size})=><Ionicons name="home-outline" color={color} size={size}/>}}/>
+  <Tabs.Screen name="opportunities" options={{title:"机会",tabBarIcon:({color,size})=><Ionicons name="compass-outline" color={color} size={size}/>}}/>
+  <Tabs.Screen name="plans" options={{title:"计划",tabBarIcon:({color,size})=><Ionicons name="list-outline" color={color} size={size}/>}}/>
+  <Tabs.Screen name="portfolio" options={{title:"持仓",tabBarIcon:({color,size})=><Ionicons name="pie-chart-outline" color={color} size={size}/>}}/>
+  <Tabs.Screen name="profile" options={{title:"我的",tabBarIcon:({color,size})=><Ionicons name="person-outline" color={color} size={size}/>}}/>
+ </Tabs>
+}