From 66c49d1a8d26bbaf86ef04d9b6ebe0176664a68a Mon Sep 17 00:00:00 2001
From: Justin Gu <97915@qq.com>
Date: Sun, 5 Jul 2026 00:15:00 +0800
Subject: [PATCH] =?UTF-8?q?feat(web-ui):=20=E4=B8=89=E5=A4=84=E5=9B=9E?=
 =?UTF-8?q?=E6=B5=8B=E5=85=A5=E5=8F=A3=E9=BB=98=E8=AE=A4=E8=B5=B7=E5=A7=8B?=
 =?UTF-8?q?=E6=97=A5=E6=9C=9F=E7=BB=9F=E4=B8=80=E4=B8=BA=202020-01-06?=
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单标的回测、组合回测、参数寻优原默认起始日为「3 年前」（动态滚动），
统一改为固定日期 2020-01-06，便于跨时间横向对比。结束日仍为今天。
SymbolPicker 共用组件的 defineModel 默认值同步更新。
---
 web-ui/src/components/SymbolPicker.vue | 4 ++--
 web-ui/src/views/BacktestView.vue      | 2 +-
 web-ui/src/views/OptimizeView.vue      | 2 +-
 web-ui/src/views/PortfolioView.vue     | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/web-ui/src/components/SymbolPicker.vue b/web-ui/src/components/SymbolPicker.vue
index 3e2e671..4e91138 100644
--- a/web-ui/src/components/SymbolPicker.vue
+++ b/web-ui/src/components/SymbolPicker.vue
@@ -2,7 +2,7 @@
 // 选标的 + 配置日期范围（取行情由父组件在「开始回测/开始寻优」时触发）。
 // 市场按 6 位代码智能识别，不再手动选择。
 // 后端 /bars 仅支持 count（上限 800，约 3.2 年），固定拉满后前端按日期过滤。
-// 默认：结束日=今天（最近交易日），开始日=3年前。
+// 默认：结束日=今天（最近交易日），开始日=2020-01-06。
 
 import { computed, ref } from 'vue'
 
@@ -24,7 +24,7 @@ const store = useBacktestStore()
 const code = defineModel<string>('code', { default: '000001' })
 const category = defineModel<Category>('category', { default: 'DAY' })
 const startDate = defineModel<string>('startDate', {
-  default: new Date(Date.now() - 365 * 3 * 86400_000).toISOString().slice(0, 10),
+  default: '2020-01-06',
 })
 const endDate = defineModel<string>('endDate', {
   default: new Date().toISOString().slice(0, 10),
diff --git a/web-ui/src/views/BacktestView.vue b/web-ui/src/views/BacktestView.vue
index 1886dc4..89632cc 100644
--- a/web-ui/src/views/BacktestView.vue
+++ b/web-ui/src/views/BacktestView.vue
@@ -31,7 +31,7 @@ function isoDaysFromNow(days: number): string {
   d.setDate(d.getDate() + days)
   return d.toISOString().slice(0, 10)
 }
-const startDate = ref(isoDaysFromNow(-365 * 3))
+const startDate = ref('2020-01-06')
 const endDate = ref(isoDaysFromNow(0))
 
 // 表单状态（v-model 给子组件）
diff --git a/web-ui/src/views/OptimizeView.vue b/web-ui/src/views/OptimizeView.vue
index 2a4b3e0..9c75078 100644
--- a/web-ui/src/views/OptimizeView.vue
+++ b/web-ui/src/views/OptimizeView.vue
@@ -27,7 +27,7 @@ function isoDaysFromNow(days: number): string {
   d.setDate(d.getDate() + days)
   return d.toISOString().slice(0, 10)
 }
-const startDate = ref(isoDaysFromNow(-365 * 3))
+const startDate = ref('2020-01-06')
 const endDate = ref(isoDaysFromNow(0))
 
 const strategy = ref('ma_cross')
diff --git a/web-ui/src/views/PortfolioView.vue b/web-ui/src/views/PortfolioView.vue
index 86ec413..530707a 100644
--- a/web-ui/src/views/PortfolioView.vue
+++ b/web-ui/src/views/PortfolioView.vue
@@ -36,7 +36,7 @@ function isoDaysFromNow(days: number): string {
   d.setDate(d.getDate() + days)
   return d.toISOString().slice(0, 10)
 }
-const startDate = ref(isoDaysFromNow(-365 * 3))
+const startDate = ref('2020-01-06')
 const endDate = ref(isoDaysFromNow(0))
 
 onMounted(async () => {