feat(kline): add configurable external stock link

设置页新增「个股详情外链」: 可填 URL 模板(占位符 {code}/{market}/{symbol}),
信息条第一行右侧显示外链图标(新标签打开)。留空关闭。

- 新建 lib/stock-external-link.ts: load/save/build + scheme 白名单(http/https) + symbol 形状守卫
- storage.ts 新增 stockExternalTemplate kv

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

frontend/src/components/StockInfoBar.tsx

@@ -1,10 +1,11 @@
 import { useState, type ReactNode } from 'react'
-import { Settings2, RadioTower, Star } from 'lucide-react'
+import { Settings2, RadioTower, Star, ExternalLink } from 'lucide-react'
 import type { KlineRow, FinancialMetricRecord } from '@/lib/api'
 import { fmtPrice, fmtBigNum, fmtVolume } from '@/lib/format'
 import { ListColumnCustomizer } from '@/components/ListColumnCustomizer'
 import { WatchlistAddMenu } from '@/components/WatchlistAddMenu'
 import { INFO_GROUPS, type ColumnConfig } from '@/lib/stock-info-fields'
+import { buildStockExternalUrl, loadStockExternalTemplate } from '@/lib/stock-external-link'
 
 const BULL = '#C74040'
 const BEAR = '#2D9B65'
@@ -235,6 +236,8 @@ export function StockInfoBar({
     )
   }
 
+  const extUrl = buildStockExternalUrl(loadStockExternalTemplate(), symbol)
+
   return (
     <div className="px-2 pb-3 font-mono text-[12px] select-none space-y-1">
       {/* Row 1: code, name, price, change, change% */}
@@ -250,8 +253,19 @@ export function StockInfoBar({
         <span style={{ color: clr }} className="tabular-nums">
           {isUp ? '+' : ''}{fmtPrice(chgPct)}%
         </span>
-        {/* 右侧操作按钮：加自选 + 加监控 + 信息条配置 */}
+        {/* 右侧操作按钮：外链 + 加自选 + 加监控 + 信息条配置 */}
         <div className="ml-auto self-center flex items-center gap-1">
+          {extUrl && (
+            <a
+              href={extUrl}
+              target="_blank"
+              rel="noopener noreferrer"
+              title={extUrl}
+              className="p-1 rounded-btn text-muted hover:text-foreground hover:bg-elevated transition-colors"
+            >
+              <ExternalLink className="h-3.5 w-3.5" />
+            </a>
+          )}
           {inWatchlist && onRemoveFromWatchlist ? (
             <button
               type="button"

frontend/src/lib/stock-external-link.ts

@@ -0,0 +1,36 @@
+/**
+ * 个股详情外链 — 可配置 URL 模板 + 证券代码。
+ *
+ * 占位符保持独立, 用户自行排列 (市场前缀/后缀因站而异):
+ *   {code}   纯 6 位代码, 如 000001
+ *   {market} 市场前缀小写, 如 sz / sh / bj
+ *   {symbol} 完整 symbol (含交易所后缀), 如 000001.SZ
+ * 模板留空 = 关闭外链。
+ */
+import { storage } from '@/lib/storage'
+
+/** 形状守卫: 只放行 6位数字 + 沪深北后缀 的 symbol (信息条场景下即股票) */
+const STOCK_SYMBOL_RE = /^(\d{6})\.(SH|SZ|BJ)$/
+
+/** 未设置或留空 → 返回 '' 即关闭外链 */
+export function loadStockExternalTemplate(): string {
+  return storage.stockExternalTemplate.get('')
+}
+
+export function saveStockExternalTemplate(tpl: string): void {
+  storage.stockExternalTemplate.set(tpl.trim())
+}
+
+export function buildStockExternalUrl(template: string, symbol: string): string | null {
+  if (!template) return null
+  // scheme 白名单: 只放行 http/https, 挡掉 javascript:/data: 等危险 scheme
+  if (!/^https?:\/\//i.test(template.trim())) return null
+  const m = symbol.match(STOCK_SYMBOL_RE)
+  if (!m) return null
+  const code = m[1]
+  const market = m[2].toLowerCase()
+  return template
+    .replaceAll('{code}', code)
+    .replaceAll('{market}', market)
+    .replaceAll('{symbol}', symbol)
+}

frontend/src/lib/storage.ts

@@ -44,6 +44,9 @@ export const storage = {
   /** 个股详情多日分时周期 */
   stockPreviewIntradayDays: kv<number>('stock_preview_intraday_days'),
 
+  /** 个股详情外链 URL 模板 (支持 {code}/{market}/{symbol}; 留空关闭) */
+  stockExternalTemplate: kv<string>('stock_external_template'),
+
   /** 策略结果列表列配置 */
   screenerResultColumns: kv<unknown[]>('screener_result_columns'),
 

frontend/src/pages/settings/System.tsx

@@ -5,7 +5,7 @@
  */
 import { useState, useCallback, useEffect } from 'react'
 import { useQueryClient } from '@tanstack/react-query'
-import { Settings2, Trash2, RefreshCw, Bell, Volume2, Info } from 'lucide-react'
+import { Settings2, Trash2, RefreshCw, Bell, Volume2, Info, ExternalLink } from 'lucide-react'
 import { usePreferences, useVersion } from '@/lib/useSharedQueries'
 import { api } from '@/lib/api'
 import { QK } from '@/lib/queryKeys'
@@ -15,6 +15,7 @@ import { SOUND_OPTIONS, previewSound } from '@/lib/notificationSound'
 import {
   listZhVoices, previewVoice, activateVoice, getCurrentVoiceURI,
 } from '@/lib/voiceBroadcast'
+import { loadStockExternalTemplate, saveStockExternalTemplate } from '@/lib/stock-external-link'
 
 export function SettingsSystemPanel() {
   const qc = useQueryClient()
@@ -23,6 +24,7 @@ export function SettingsSystemPanel() {
   const [saving, setSaving] = useState(false)
 
   const screenerAutoRun = prefs?.screener_auto_run ?? true
+  const [extTpl, setExtTpl] = useState(() => loadStockExternalTemplate())
   const [clearing, setClearing] = useState(false)
   const [toastEnabled, setToastEnabled] = useState(() => {
     try { return localStorage.getItem('alert_toast_enabled') !== '0' } catch { return true }
@@ -288,6 +290,30 @@ export function SettingsSystemPanel() {
         </div>
       </section>
 
+      <section className="rounded-card border border-border bg-surface p-5 mt-6">
+        <div className="flex items-center gap-2 mb-4">
+          <ExternalLink className="h-4 w-4 text-accent" />
+          <h3 className="text-sm font-medium text-foreground">个股详情外链</h3>
+        </div>
+
+        <div className="flex items-center justify-between gap-4 py-2">
+          <div className="min-w-0">
+            <div className="text-sm text-foreground">详情页 URL 模板</div>
+            <div className="text-[11px] text-muted truncate">{"支持 {code} {market} {symbol} · 留空关闭外链"}</div>
+          </div>
+          <input
+            value={extTpl}
+            onChange={(e) => {
+              setExtTpl(e.target.value)
+              saveStockExternalTemplate(e.target.value)
+            }}
+            placeholder="https://..."
+            spellCheck={false}
+            className="w-[26rem] max-w-[60%] h-8 px-2.5 rounded-btn border border-border bg-base text-xs font-mono text-foreground focus:border-accent/50 focus:outline-none"
+          />
+        </div>
+      </section>
+
       <section className="rounded-card border border-border bg-surface p-5 mt-6">
         <div className="flex items-center gap-2 mb-4">
           <Trash2 className="h-4 w-4 text-accent" />