fix(intraday): handle missing minute amount

frontend/src/components/EChartsIntraday.tsx

@@ -30,7 +30,8 @@ interface Props {
   showAvgLine?: boolean
 }
 
-function fmtAmt(v: number): string {
+function fmtAmt(v: number | null | undefined): string {
+  if (v == null || !Number.isFinite(v)) return '—'
   if (v >= 1_000_000_000) return `${(v / 1_000_000_000).toFixed(2)}亿`
   if (v >= 10_000) return `${(v / 10_000).toFixed(0)}万`
   return v.toFixed(0)

frontend/src/components/EChartsMultiDayIntraday.tsx

@@ -29,7 +29,8 @@ interface InfoPoint {
   prevClose: number | null
 }
 
-function formatAmount(value: number): string {
+function formatAmount(value: number | null | undefined): string {
+  if (value == null || !Number.isFinite(value)) return '—'
   if (value >= 1_000_000_000) return `${(value / 1_000_000_000).toFixed(2)}亿`
   if (value >= 10_000) return `${(value / 10_000).toFixed(0)}万`
   return value.toFixed(0)

frontend/src/lib/api.ts

@@ -208,7 +208,7 @@ export interface MinuteKlineRow {
   low: number
   close: number
   volume: number
-  amount: number
+  amount: number | null
 }
 
 export interface MinuteKlineSession {

frontend/src/lib/intraday-chart.ts

@@ -11,10 +11,15 @@ export function computeIntradayAverage(data: MinuteKlineRow[]): number[] {
   const result: number[] = []
   let amount = 0
   let volume = 0
+  let hasAmount = true
   for (const row of data) {
-    amount += row.amount
+    if (typeof row.amount === 'number' && Number.isFinite(row.amount)) {
+      amount += row.amount
+    } else {
+      hasAmount = false
+    }
     volume += row.volume * 100
-    result.push(volume > 0 ? amount / volume : row.close)
+    result.push(hasAmount && volume > 0 ? amount / volume : row.close)
   }
   return result
 }