Bugfix/normalize date in market data update endpoint

The bulk market data update endpoint parses the incoming date with
parseISO, which interprets a date-only string as LOCAL midnight. The data
gathering path stores market data at UTC midnight via resetHours. On a
server running in any time zone other than UTC the two therefore disagree,
and because MarketData is keyed on (dataSource, date, symbol) the upsert
misses the existing row and a duplicate is created one offset away.

Demonstration for the input "2026-08-07":

  UTC                parseISO -> 2026-08-07T00:00:00.000Z   matches
  Europe/Lisbon      parseISO -> 2026-08-06T23:00:00.000Z   off by -1h
  America/Sao_Paulo  parseISO -> 2026-08-07T03:00:00.000Z   off by +3h
  Asia/Tokyo         parseISO -> 2026-08-06T15:00:00.000Z   off by -9h

Using resetHours(parseDate(date)) yields 2026-08-07T00:00:00.000Z in every
zone and matches what market-data.service.ts already writes, so the endpoint
now agrees with the rest of the codebase rather than only on UTC hosts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -22,6 +22,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fixed the check for duplicates in the preview step of the activities import for activities without a comment
 - Fixed the holdings mock data in the _Storybook_ story of the portfolio filter form component
+- Fixed the date normalization in the market data update endpoint to prevent duplicate entries on servers running in a non-UTC time zone
 
 ## 3.44.0 - 2026-08-07
 

apps/api/src/app/endpoints/market-data/market-data.controller.ts

@@ -4,7 +4,12 @@ import { HasPermissionGuard } from '@ghostfolio/api/guards/has-permission.guard'
 import { MarketDataService } from '@ghostfolio/api/services/market-data/market-data.service';
 import { SymbolProfileService } from '@ghostfolio/api/services/symbol-profile/symbol-profile.service';
 import { UpdateBulkMarketDataDto } from '@ghostfolio/common/dtos';
-import { getCurrencyFromSymbol, isCurrency } from '@ghostfolio/common/helper';
+import {
+  getCurrencyFromSymbol,
+  isCurrency,
+  parseDate,
+  resetHours
+} from '@ghostfolio/common/helper';
 import { MarketDataOfMarketsResponse } from '@ghostfolio/common/interfaces';
 import { hasPermission, permissions } from '@ghostfolio/common/permissions';
 import { RequestWithUser } from '@ghostfolio/common/types';
@@ -24,7 +29,6 @@ import {
 import { REQUEST } from '@nestjs/core';
 import { AuthGuard } from '@nestjs/passport';
 import { DataSource, Prisma } from '@prisma/client';
-import { parseISO } from 'date-fns';
 import { getReasonPhrase, StatusCodes } from 'http-status-codes';
 
 @Controller('market-data')
@@ -99,7 +103,7 @@ export class MarketDataController {
         dataSource,
         marketPrice,
         symbol,
-        date: parseISO(date),
+        date: resetHours(parseDate(date)),
         state: 'CLOSE'
       })
     );