fix(client): compute "today" from the local calendar, not UTC

client/src/components/Journey/JourneyDetailPageDatePicker.tsx

@@ -1,4 +1,5 @@
 import { useState } from 'react'
+import { localIsoDate } from '../../utils/localDate'
 import { ArrowLeft, ChevronRight, Calendar } from 'lucide-react'
 import { useTranslation } from '../../i18n'
 
@@ -81,7 +82,7 @@ export function DatePicker({ value, onChange, tripDates }: {
                 const dateStr = `${viewMonth.year}-${pad(viewMonth.month + 1)}-${pad(day)}`
                 const isSelected = dateStr === value
                 const isTrip = tripDates?.has(dateStr)
-                const isToday = dateStr === new Date().toISOString().split('T')[0]
+                const isToday = dateStr === localIsoDate()
 
                 return (
                   <button

client/src/components/Journey/JourneyDetailPageEntryEditor.test.tsx

@@ -2,6 +2,7 @@
 
 import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
 import { http, HttpResponse, delay } from 'msw'
+import { localIsoDate } from '../../utils/localDate'
 import userEvent from '@testing-library/user-event'
 import { render, screen, waitFor, fireEvent } from '../../../tests/helpers/render'
 import { server } from '../../../tests/helpers/msw/server'
@@ -516,7 +517,7 @@ describe('EntryEditor', () => {
       entry_date: '', photos: undefined as unknown as JourneyPhoto[],
     }))
 
-    const today = new Date().toISOString().split('T')[0]
+    const today = localIsoDate() // local, matching the editor's default — not the UTC date
     const label = new Date(today + 'T00:00:00').toLocaleDateString(undefined, {
       month: 'short', day: 'numeric', year: 'numeric',
     })

client/src/components/Journey/JourneyDetailPageEntryEditor.tsx

@@ -1,4 +1,5 @@
 import { useEffect, useMemo, useState, useRef } from 'react'
+import { localIsoDate } from '../../utils/localDate'
 import { X, Plus, Image, Minus, Check, MapPin, Locate, Camera } from 'lucide-react'
 import { normalizeImageFiles } from '../../utils/convertHeic'
 import { type ResilientResult, type UploadProgress } from '../../utils/uploadQueue'
@@ -33,7 +34,7 @@ export function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, trips,
   const toast = useToast()
   const [title, setTitle] = useState(entry.title || '')
   const [story, setStory] = useState(entry.story || '')
-  const [entryDate, setEntryDate] = useState(entry.entry_date || new Date().toISOString().split('T')[0])
+  const [entryDate, setEntryDate] = useState(entry.entry_date || localIsoDate())
   const [entryTime, setEntryTime] = useState(entry.entry_time?.slice(0, 5) || '')
   const [locationName, setLocationName] = useState(entry.location_name || '')
   const [locationLat, setLocationLat] = useState<number | null>(entry.location_lat ?? null)
@@ -78,7 +79,7 @@ export function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, trips,
   const isDirty = (
     title !== (entry.title || '') ||
     story !== (entry.story || '') ||
-    entryDate !== (entry.entry_date || new Date().toISOString().split('T')[0]) ||
+    entryDate !== (entry.entry_date || localIsoDate()) ||
     entryTime !== (entry.entry_time?.slice(0, 5) || '') ||
     locationName !== (entry.location_name || '') ||
     (locationLat ?? null) !== (entry.location_lat ?? null) ||

client/src/components/Planner/ReservationModal.tsx

@@ -1,4 +1,5 @@
 import { useState, useEffect, useRef, useMemo } from 'react'
+import { localIsoDate } from '../../utils/localDate'
 import { useParams } from 'react-router'
 import apiClient from '../../api/client'
 import { useTripStore } from '../../store/tripStore'
@@ -480,7 +481,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
                   onChange={tm => {
                     const [d] = (form.reservation_time || '').split('T')
                     const selectedDay = days.find(dy => dy.id === selectedDayId)
-                    const date = d || selectedDay?.date || new Date().toISOString().split('T')[0]
+                    const date = d || selectedDay?.date || localIsoDate()
                     set('reservation_time', tm ? `${date}T${tm}` : date)
                   }}
                 />

client/src/components/shared/CustomDateTimePicker.test.tsx

@@ -1,4 +1,5 @@
 import userEvent from '@testing-library/user-event';
+import { localIsoDate } from '../../utils/localDate';
 import { act, fireEvent, render, screen } from '../../../tests/helpers/render';
 import { useSettingsStore } from '../../store/settingsStore';
 import { CustomDatePicker, CustomDateTimePicker } from './CustomDateTimePicker';
@@ -722,7 +723,7 @@ describe('CustomDateTimePicker branches', () => {
     const steppers = screen.getAllByRole('button').filter((b) => b.textContent?.trim() === '');
     fireEvent.click(steppers[steppers.length - 4]);
 
-    const today = new Date().toISOString().split('T')[0];
+    const today = localIsoDate(); // the picker falls back to the LOCAL date, not the UTC one
     expect(onChange).toHaveBeenCalledWith(`${today}T01:00`);
   });
 

client/src/components/shared/CustomDateTimePicker.tsx

@@ -1,4 +1,5 @@
 import { Calendar, ChevronLeft, ChevronRight, Keyboard } from 'lucide-react';
+import { localIsoDate } from '../../utils/localDate';
 import React, { useEffect, useRef, useState } from 'react';
 import { createPortal } from 'react-dom';
 import { useTranslation } from '../../i18n';
@@ -688,7 +689,7 @@ export function CustomDateTimePicker({ value, onChange, placeholder, style = {}
     onChange(d ? `${d}T${timePart || '12:00'}` : '');
   };
   const handleTimeChange = (t: string) => {
-    const d = datePart || new Date().toISOString().split('T')[0];
+    const d = datePart || localIsoDate();
     onChange(t ? `${d}T${t}` : d);
   };