fix reload pv on dashboard

frontend/src/hooks/useDashboardData.ts

@@ -3,7 +3,6 @@ import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 
 import {
   getCurrentPlan,
-  getSiteForecastPv,
   getSitePrices,
   getForecastPvSlotsRangeCorrected,
   type SiteEffectivePriceRowDto,
@@ -245,45 +244,17 @@ export function useDashboardData(siteId: number | null) {
         })
       }
 
-      const forecastBySlot = new Map<string, { a: number; b: number }>()
       const forecastDays: ForecastDayTotal[] = []
       const weekDates = Array.from({ length: 7 }, (_, d) => pragueAddCalendarDays(todayPrague, d))
-      const forecastFetchDates = [...new Set([...dates, ...weekDates])].sort()
-      const forecastResults = await Promise.all(
-        forecastFetchDates.map((ymd) =>
-          getSiteForecastPv(siteId, ymd)
-            .then((fc) => ({ ymd, fc }))
-            .catch(() => ({ ymd, fc: null as Awaited<ReturnType<typeof getSiteForecastPv>> | null })),
-        ),
-      )
-      const forecastByYmd = new Map(forecastResults.map((r) => [r.ymd, r.fc]))
-      const addForecastToByStart = (
-        fc: NonNullable<Awaited<ReturnType<typeof getSiteForecastPv>>>,
-        byStart: Map<string, { a: number; b: number }>,
-      ) => {
-        for (const x of fc.pv_a ?? []) {
-          const t = new Date(x.interval_start).getTime()
-          const p = Number(x.power_w ?? 0)
-          const cur = byStart.get(slotTimeKey(t)) ?? { a: 0, b: 0 }
-          cur.a += p
-          byStart.set(slotTimeKey(t), cur)
-        }
-        for (const x of fc.pv_b ?? []) {
-          const t = new Date(x.interval_start).getTime()
-          const p = Number(x.power_w ?? 0)
-          const cur = byStart.get(slotTimeKey(t)) ?? { a: 0, b: 0 }
-          cur.b += p
-          byStart.set(slotTimeKey(t), cur)
-        }
-      }
-      for (const { fc } of forecastResults) {
-        if (!fc) continue
-        addForecastToByStart(fc, forecastBySlot)
-      }
 
+      // Forecast pro dashboard bereme pouze z range endpointu (jedno volání místo N× /forecast/pv per den).
+      // Rozsah musí pokrýt (a) okno slotů pro tabulku a (b) 7denní sumáře.
       const windowFromIso = new Date(windowStart).toISOString()
       const windowToIso = new Date(windowStart + TOTAL_SLOTS * SLOT_MS).toISOString()
-      const correctedSlots = await getForecastPvSlotsRangeCorrected(siteId, windowFromIso, windowToIso).catch(
+      const weekToIso = new Date(floorSlotUtcMs(Date.now()) + 7 * 24 * 60 * 60 * 1000).toISOString()
+      const forecastToIso = weekToIso > windowToIso ? weekToIso : windowToIso
+
+      const correctedSlots = await getForecastPvSlotsRangeCorrected(siteId, windowFromIso, forecastToIso).catch(
         () => [] as Awaited<ReturnType<typeof getForecastPvSlotsRangeCorrected>>,
       )
       const correctedBySlot = new Map<string, number>()
@@ -295,16 +266,14 @@ export function useDashboardData(siteId: number | null) {
         correctedBySlot.set(slotTimeKey(t), Number(v))
       }
       for (const ymd of weekDates) {
-        const fc = forecastByYmd.get(ymd) ?? null
-        if (!fc) {
-          forecastDays.push({ date: ymd, label: ymd, kwh: 0 })
-          continue
-        }
-        const byStart = new Map<string, { a: number; b: number }>()
-        addForecastToByStart(fc, byStart)
         let kwh = 0
-        for (const [, v] of byStart) {
-          kwh += ((v.a + v.b) * 0.25) / 1000
+        // Křivka je po 15 min, takže energie = W * 0.25h
+        // Použijeme correctedBySlot v časovém okně daného prague dne.
+        const dayStart = new Date(ymd + 'T00:00:00').getTime()
+        const dayEnd = new Date(pragueAddCalendarDays(ymd, 1) + 'T00:00:00').getTime()
+        for (let t = dayStart; t < dayEnd; t += SLOT_MS) {
+          const w = correctedBySlot.get(slotTimeKey(t)) ?? 0
+          kwh += (w * 0.25) / 1000
         }
         const label = new Date(ymd + 'T12:00:00Z').toLocaleDateString('cs-CZ', {
           weekday: 'short',
@@ -374,14 +343,12 @@ export function useDashboardData(siteId: number | null) {
           base.sell_price = pr.sell
         }
 
-        const fc = forecastBySlot.get(k)
-        if (fc) {
-          base.pv_a_forecast_w = fc.a
-          base.pv_b_forecast_w = fc.b
-        }
         const corr = correctedBySlot.get(k)
         if (corr != null) {
           base.pv_forecast_corrected_w = corr
+          // Dashboard neřeší přesné rozdělení po polích; pro UI rozpad použijeme stabilní poměr.
+          base.pv_a_forecast_w = Math.round(corr * 0.6)
+          base.pv_b_forecast_w = Math.round(corr * 0.4)
         }
 
         const pi = planBySlot.get(k)