fix(journey): resilient per-file photo upload with retry and progress

Replace the single combined-FormData POST (which timed out at 8 s on slow
connections) with a concurrent per-file upload queue: each file is uploaded
individually with timeout disabled, up to 2 retries with backoff (4xx errors
are not retried), and a stable idempotency key per file so server-side dedup
prevents duplicates on retry. Partial success is preserved — succeeded photos
merge into state immediately; failed files stay queued for re-save. Progress
is surfaced as "Uploading n/N" in both the entry editor and gallery upload
button. Adds translations for two new keys across all 15 locales.

Closes #1013

client/src/api/client.ts

@@ -407,8 +407,20 @@ export const journeyApi = {
   reorderEntries: (journeyId: number, orderedIds: number[]) => apiClient.put(`/journeys/${journeyId}/entries/reorder`, { orderedIds }).then(r => r.data),
 
   // Photos
-  uploadPhotos: (entryId: number, formData: FormData) => apiClient.post(`/journeys/entries/${entryId}/photos`, formData, { headers: { 'Content-Type': undefined as any } }).then(r => r.data),
-  uploadGalleryPhotos: (journeyId: number, formData: FormData) => apiClient.post(`/journeys/${journeyId}/gallery/photos`, formData, { headers: { 'Content-Type': undefined as any } }).then(r => r.data),
+  uploadPhotos: (entryId: number, formData: FormData, opts?: { onUploadProgress?: (e: import('axios').AxiosProgressEvent) => void; idempotencyKey?: string; signal?: AbortSignal }) =>
+    apiClient.post(`/journeys/entries/${entryId}/photos`, formData, {
+      headers: { 'Content-Type': undefined as any, ...(opts?.idempotencyKey ? { 'X-Idempotency-Key': opts.idempotencyKey } : {}) },
+      timeout: 0,
+      onUploadProgress: opts?.onUploadProgress,
+      signal: opts?.signal,
+    }).then(r => r.data),
+  uploadGalleryPhotos: (journeyId: number, formData: FormData, opts?: { onUploadProgress?: (e: import('axios').AxiosProgressEvent) => void; idempotencyKey?: string; signal?: AbortSignal }) =>
+    apiClient.post(`/journeys/${journeyId}/gallery/photos`, formData, {
+      headers: { 'Content-Type': undefined as any, ...(opts?.idempotencyKey ? { 'X-Idempotency-Key': opts.idempotencyKey } : {}) },
+      timeout: 0,
+      onUploadProgress: opts?.onUploadProgress,
+      signal: opts?.signal,
+    }).then(r => r.data),
   addProviderPhotosToGallery: (journeyId: number, provider: string, assetIds: string[], passphrase?: string) => apiClient.post(`/journeys/${journeyId}/gallery/provider-photos`, { provider, asset_ids: assetIds, ...(passphrase ? { passphrase } : {}) }).then(r => r.data),
   addProviderPhoto: (entryId: number, provider: string, assetId: string, caption?: string, passphrase?: string) => apiClient.post(`/journeys/entries/${entryId}/provider-photos`, { provider, asset_id: assetId, caption, ...(passphrase ? { passphrase } : {}) }).then(r => r.data),
   addProviderPhotos: (entryId: number, provider: string, assetIds: string[], caption?: string, passphrase?: string) => apiClient.post(`/journeys/entries/${entryId}/provider-photos`, { provider, asset_ids: assetIds, caption, ...(passphrase ? { passphrase } : {}) }).then(r => r.data),

client/src/i18n/translations/ar.ts

@@ -1713,6 +1713,8 @@ const ar: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'فشل رفع الصور',
   'journey.editor.uploadPhotos': 'رفع صور',
   'journey.editor.uploading': '...جارٍ الرفع',
+  'journey.editor.uploadingProgress': 'جارٍ الرفع {done}/{total}…',
+  'journey.editor.uploadPartialFailed': 'فشل رفع {failed} من {total} — احفظ مجدداً للمحاولة',
   'journey.editor.fromGallery': 'من المعرض',
   'journey.editor.addAnother': 'إضافة آخر',
   'journey.editor.makeFirst': 'جعله الأول',

client/src/i18n/translations/br.ts

@@ -2084,6 +2084,8 @@ const br: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Falha ao enviar fotos',
   'journey.editor.uploadPhotos': 'Enviar fotos',
   'journey.editor.uploading': 'Enviando...',
+  'journey.editor.uploadingProgress': 'Enviando {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} de {total} fotos falharam — salve novamente para tentar',
   'journey.editor.fromGallery': 'Da galeria',
   'journey.editor.allPhotosAdded': 'Todas as fotos já foram adicionadas',
   'journey.editor.writeStory': 'Escreva sua história...',

client/src/i18n/translations/cs.ts

@@ -2089,6 +2089,8 @@ const cs: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Nahrávání fotek selhalo',
   'journey.editor.uploadPhotos': 'Nahrát fotky',
   'journey.editor.uploading': 'Nahrávání...',
+  'journey.editor.uploadingProgress': 'Nahrávání {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} z {total} fotek selhalo — uložte znovu pro opakování',
   'journey.editor.fromGallery': 'Z galerie',
   'journey.editor.allPhotosAdded': 'Všechny fotky již přidány',
   'journey.editor.writeStory': 'Napište svůj příběh...',

client/src/i18n/translations/de.ts

@@ -2092,6 +2092,8 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Foto-Upload fehlgeschlagen',
   'journey.editor.uploadPhotos': 'Fotos hochladen',
   'journey.editor.uploading': 'Hochladen...',
+  'journey.editor.uploadingProgress': 'Hochladen {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} von {total} Fotos fehlgeschlagen — erneut speichern zum Wiederholen',
   'journey.editor.fromGallery': 'Aus Galerie',
   'journey.editor.allPhotosAdded': 'Alle Fotos bereits hinzugefügt',
   'journey.editor.writeStory': 'Erzähle deine Geschichte...',

client/src/i18n/translations/en.ts

@@ -2118,6 +2118,8 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Photo upload failed',
   'journey.editor.uploadPhotos': 'Upload photos',
   'journey.editor.uploading': 'Uploading...',
+  'journey.editor.uploadingProgress': 'Uploading {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} of {total} photos failed — save again to retry',
   'journey.editor.fromGallery': 'From Gallery',
   'journey.editor.allPhotosAdded': 'All photos already added',
   'journey.editor.writeStory': 'Write your story...',

client/src/i18n/translations/es.ts

@@ -2091,6 +2091,8 @@ const es: Record<string, string> = {
   'journey.editor.uploadFailed': 'Error al subir fotos',
   'journey.editor.uploadPhotos': 'Subir fotos',
   'journey.editor.uploading': 'Subiendo...',
+  'journey.editor.uploadingProgress': 'Subiendo {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} de {total} fotos fallaron — guarda de nuevo para reintentar',
   'journey.editor.fromGallery': 'Desde galería',
   'journey.editor.allPhotosAdded': 'Todas las fotos ya fueron añadidas',
   'journey.editor.writeStory': 'Escribe tu historia...',

client/src/i18n/translations/fr.ts

@@ -2085,6 +2085,8 @@ const fr: Record<string, string> = {
   'journey.editor.uploadFailed': 'Échec du téléversement des photos',
   'journey.editor.uploadPhotos': 'Téléverser des photos',
   'journey.editor.uploading': 'Envoi...',
+  'journey.editor.uploadingProgress': 'Téléversement {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} sur {total} photos ont échoué — sauvegardez à nouveau pour réessayer',
   'journey.editor.fromGallery': 'Depuis la galerie',
   'journey.editor.allPhotosAdded': 'Toutes les photos ont déjà été ajoutées',
   'journey.editor.writeStory': 'Écrivez votre histoire...',

client/src/i18n/translations/hu.ts

@@ -2086,6 +2086,8 @@ const hu: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'A fotók feltöltése sikertelen',
   'journey.editor.uploadPhotos': 'Fotók feltöltése',
   'journey.editor.uploading': 'Feltöltés...',
+  'journey.editor.uploadingProgress': 'Feltöltés {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} / {total} fotó sikertelen — mentsd el újra a próbálkozáshoz',
   'journey.editor.fromGallery': 'Galériából',
   'journey.editor.allPhotosAdded': 'Minden fotó már hozzáadva',
   'journey.editor.writeStory': 'Írd meg a történeted...',

client/src/i18n/translations/id.ts

@@ -2101,6 +2101,8 @@ const id: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Gagal mengunggah foto',
   'journey.editor.uploadPhotos': 'Unggah foto',
   'journey.editor.uploading': 'Mengunggah...',
+  'journey.editor.uploadingProgress': 'Mengunggah {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} dari {total} foto gagal — simpan lagi untuk mencoba ulang',
   'journey.editor.fromGallery': 'Dari Galeri',
   'journey.editor.allPhotosAdded': 'Semua foto sudah ditambahkan',
   'journey.editor.writeStory': 'Tulis kisahmu...',

client/src/i18n/translations/it.ts

@@ -2086,6 +2086,8 @@ const it: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Caricamento foto non riuscito',
   'journey.editor.uploadPhotos': 'Carica foto',
   'journey.editor.uploading': 'Caricamento...',
+  'journey.editor.uploadingProgress': 'Caricamento {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} di {total} foto non riuscite — salva di nuovo per riprovare',
   'journey.editor.fromGallery': 'Dalla galleria',
   'journey.editor.allPhotosAdded': 'Tutte le foto sono già state aggiunte',
   'journey.editor.writeStory': 'Scrivi la tua storia...',

client/src/i18n/translations/nl.ts

@@ -2085,6 +2085,8 @@ const nl: Record<string, string> = {
   'journey.editor.uploadFailed': 'Foto uploaden mislukt',
   'journey.editor.uploadPhotos': 'Foto\'s uploaden',
   'journey.editor.uploading': 'Uploaden...',
+  'journey.editor.uploadingProgress': 'Uploaden {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} van {total} foto\'s mislukt — sla opnieuw op om het opnieuw te proberen',
   'journey.editor.fromGallery': 'Uit galerij',
   'journey.editor.allPhotosAdded': 'Alle foto\'s al toegevoegd',
   'journey.editor.writeStory': 'Schrijf je verhaal...',

client/src/i18n/translations/pl.ts

@@ -2078,6 +2078,8 @@ const pl: Record<string, string | { name: string; category: string }[]> = {
   'journey.editor.uploadFailed': 'Przesyłanie zdjęć nie powiodło się',
   'journey.editor.uploadPhotos': 'Prześlij zdjęcia',
   'journey.editor.uploading': 'Przesyłanie...',
+  'journey.editor.uploadingProgress': 'Przesyłanie {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} z {total} zdjęć nie powiodło się — zapisz ponownie, aby spróbować',
   'journey.editor.fromGallery': 'Z galerii',
   'journey.editor.allPhotosAdded': 'Wszystkie zdjęcia już dodane',
   'journey.editor.writeStory': 'Napisz swoją historię...',

client/src/i18n/translations/ru.ts

@@ -2085,6 +2085,8 @@ const ru: Record<string, string> = {
   'journey.editor.uploadFailed': 'Не удалось загрузить фото',
   'journey.editor.uploadPhotos': 'Загрузить фото',
   'journey.editor.uploading': 'Загрузка...',
+  'journey.editor.uploadingProgress': 'Загрузка {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{failed} из {total} фото не удалось загрузить — сохраните снова для повтора',
   'journey.editor.fromGallery': 'Из галереи',
   'journey.editor.allPhotosAdded': 'Все фото уже добавлены',
   'journey.editor.writeStory': 'Напишите свою историю...',

client/src/i18n/translations/zh.ts

@@ -2085,6 +2085,8 @@ const zh: Record<string, string> = {
   'journey.editor.uploadFailed': '照片上传失败',
   'journey.editor.uploadPhotos': '上传照片',
   'journey.editor.uploading': '上传中...',
+  'journey.editor.uploadingProgress': '上传中 {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{total} 张中有 {failed} 张上传失败 — 再次保存以重试',
   'journey.editor.fromGallery': '从相册',
   'journey.editor.allPhotosAdded': '所有照片已添加',
   'journey.editor.writeStory': '写下你的故事...',

client/src/i18n/translations/zhTw.ts

@@ -2043,6 +2043,8 @@ const zhTw: Record<string, string> = {
   'journey.editor.uploadFailed': '照片上傳失敗',
   'journey.editor.uploadPhotos': '上傳照片',
   'journey.editor.uploading': '上傳中...',
+  'journey.editor.uploadingProgress': '上傳中 {done}/{total}…',
+  'journey.editor.uploadPartialFailed': '{total} 張中有 {failed} 張上傳失敗 — 再次儲存以重試',
   'journey.editor.fromGallery': '從相簿',
   'journey.editor.allPhotosAdded': '所有照片已新增',
   'journey.editor.writeStory': '寫下你的故事...',

client/src/pages/JourneyDetailPage.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useState, useRef, useCallback, useMemo } from 'react'
 import { formatLocationName } from '../utils/formatters'
 import { normalizeImageFiles } from '../utils/convertHeic'
+import { type ResilientResult, type UploadProgress } from '../utils/uploadQueue'
 import { createPortal } from 'react-dom'
 import { useParams, useNavigate } from 'react-router-dom'
 import { useJourneyStore } from '../store/journeyStore'
@@ -748,8 +749,8 @@ export default function JourneyDetailPage() {
             }
             return entryId
           }}
-          onUploadPhotos={async (entryId, formData) => {
-            return await uploadPhotos(entryId, formData)
+          onUploadPhotos={async (entryId, files, cbs) => {
+            return await uploadPhotos(entryId, files, cbs)
           }}
           onDone={() => {
             setEditingEntry(null)
@@ -987,7 +988,8 @@ function GalleryView({ entries, gallery, journeyId, userId, trips, onPhotoClick,
   const [showPicker, setShowPicker] = useState(false)
   const [pickerProvider, setPickerProvider] = useState<string | null>(null)
   const [availableProviders, setAvailableProviders] = useState<{ id: string; name: string }[]>([])
-  const [galleryUploading, setGalleryUploading] = useState(false)
+  const [galleryProgress, setGalleryProgress] = useState<{ done: number; total: number } | null>(null)
+  const galleryUploading = galleryProgress !== null
   const toast = useToast()
 
   // check which providers are enabled AND connected for the current user
@@ -1027,18 +1029,22 @@ function GalleryView({ entries, gallery, journeyId, userId, trips, onPhotoClick,
   const handleGalleryUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
     const files = e.target.files
     if (!files?.length) return
-    setGalleryUploading(true)
+    setGalleryProgress({ done: 0, total: files.length })
     try {
       const normalized = await normalizeImageFiles(files)
-      const formData = new FormData()
-      for (const f of normalized) formData.append('photos', f)
-      await journeyApi.uploadGalleryPhotos(journeyId, formData)
-      toast.success(t('journey.photosUploaded', { count: files.length }))
+      const { failed } = await useJourneyStore.getState().uploadGalleryPhotos(journeyId, normalized, {
+        onProgress: p => setGalleryProgress({ done: p.done, total: p.total }),
+      })
+      if (failed.length > 0) {
+        toast.error(t('journey.editor.uploadPartialFailed', { failed: String(failed.length), total: String(normalized.length) }))
+      } else {
+        toast.success(t('journey.photosUploaded', { count: String(files.length) }))
+      }
       onRefresh()
     } catch (err) {
       toast.error(getApiErrorMessage(err, t('journey.photosUploadFailed')))
     } finally {
-      setGalleryUploading(false)
+      setGalleryProgress(null)
     }
     e.target.value = ''
   }
@@ -1083,7 +1089,7 @@ function GalleryView({ entries, gallery, journeyId, userId, trips, onPhotoClick,
             className="inline-flex items-center gap-1.5 px-2.5 py-1.5 rounded-lg bg-zinc-900 dark:bg-white text-white dark:text-zinc-900 text-[11px] font-medium hover:bg-zinc-800 dark:hover:bg-zinc-100 disabled:opacity-50"
           >
             {galleryUploading ? (
-              <><div className="w-3 h-3 border-2 border-white/30 dark:border-zinc-900/30 border-t-white dark:border-t-zinc-900 rounded-full animate-spin" /> {t('journey.editor.uploading')}</>
+              <><div className="w-3 h-3 border-2 border-white/30 dark:border-zinc-900/30 border-t-white dark:border-t-zinc-900 rounded-full animate-spin" /> {galleryProgress ? t('journey.editor.uploadingProgress', { done: String(galleryProgress.done), total: String(galleryProgress.total) }) : t('journey.editor.uploading')}</>
             ) : (
               <><Plus size={12} /> {t('common.upload')}</>
             )}
@@ -2172,7 +2178,7 @@ function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, onClose, onSa
   galleryPhotos: GalleryPhoto[]
   onClose: () => void
   onSave: (data: Record<string, unknown>) => Promise<number>
-  onUploadPhotos: (entryId: number, formData: FormData) => Promise<JourneyPhoto[]>
+  onUploadPhotos: (entryId: number, files: File[], cbs?: { onProgress?: (p: UploadProgress) => void }) => Promise<ResilientResult<JourneyPhoto>>
   onDone: () => void
 }) {
   const { t } = useTranslation()
@@ -2195,7 +2201,7 @@ function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, onClose, onSa
   const [pros, setPros] = useState<string[]>(entry.pros_cons?.pros?.length ? entry.pros_cons.pros : [''])
   const [cons, setCons] = useState<string[]>(entry.pros_cons?.cons?.length ? entry.pros_cons.cons : [''])
   const [saving, setSaving] = useState(false)
-  const [uploading, setUploading] = useState(false)
+  const [uploadProgress, setUploadProgress] = useState<{ done: number; total: number } | null>(null)
   const [photos, setPhotos] = useState<(JourneyPhoto | GalleryPhoto)[]>(entry.photos || [])
   const [pendingFiles, setPendingFiles] = useState<File[]>([])
   const [pendingLinkIds, setPendingLinkIds] = useState<number[]>([])
@@ -2248,12 +2254,20 @@ function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, onClose, onSa
       })
       // upload queued files after entry is created
       if (pendingFiles.length > 0 && entryId) {
-        const formData = new FormData()
-        for (const f of pendingFiles) formData.append('photos', f)
+        const filesToUpload = pendingFiles
+        setUploadProgress({ done: 0, total: filesToUpload.length })
         try {
-          await onUploadPhotos(entryId, formData)
+          const { failed } = await onUploadPhotos(entryId, filesToUpload, {
+            onProgress: p => setUploadProgress({ done: p.done, total: p.total }),
+          })
+          setPendingFiles(failed)
+          if (failed.length > 0) {
+            toast.error(t('journey.editor.uploadPartialFailed', { failed: String(failed.length), total: String(filesToUpload.length) }))
+          }
         } catch (err) {
           toast.error(getApiErrorMessage(err, t('journey.editor.uploadFailed')))
+        } finally {
+          setUploadProgress(null)
         }
       }
       // link gallery photos that were picked before save
@@ -2309,11 +2323,11 @@ function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, onClose, onSa
             <div className="flex gap-2">
               <button
                 onClick={() => fileRef.current?.click()}
-                disabled={uploading}
+                disabled={saving}
                 className="flex-1 border border-dashed border-zinc-200 dark:border-zinc-700 rounded-lg py-4 text-[12px] text-zinc-500 hover:border-zinc-400 dark:hover:border-zinc-500 hover:bg-zinc-50 dark:hover:bg-zinc-800 flex items-center justify-center gap-1.5 disabled:opacity-50"
               >
-                {uploading ? (
-                  <><div className="w-3.5 h-3.5 border-2 border-zinc-300 border-t-zinc-600 rounded-full animate-spin" /> {t('journey.editor.uploading')}</>
+                {uploadProgress ? (
+                  <><div className="w-3.5 h-3.5 border-2 border-zinc-300 border-t-zinc-600 rounded-full animate-spin" /> {t('journey.editor.uploadingProgress', { done: String(uploadProgress.done), total: String(uploadProgress.total) })}</>
                 ) : (
                   <><Plus size={13} /> {t('journey.editor.uploadPhotos')}</>
                 )}

client/src/store/journeyStore.test.ts

@@ -287,13 +287,61 @@ describe('journeyStore', () => {
         HttpResponse.json({ photos: [newPhoto] })
       )
     );
-    const result = await useJourneyStore.getState().uploadPhotos(100, new FormData());
-    expect(result).toHaveLength(1);
-    expect(result[0].id).toBe(91);
+    const file = new File(['x'], 'photo.jpg', { type: 'image/jpeg' });
+    const result = await useJourneyStore.getState().uploadPhotos(100, [file]);
+    expect(result.succeeded).toHaveLength(1);
+    expect(result.succeeded[0].id).toBe(91);
+    expect(result.failed).toHaveLength(0);
     const storedEntry = useJourneyStore.getState().current?.entries.find(e => e.id === 100);
     expect(storedEntry?.photos).toHaveLength(2);
   });
 
+  it('FE-STORE-JOURNEY-017: uploadPhotos returns failed files and merges only succeeded on network error', async () => {
+    const entry = buildEntry({ id: 100, photos: [] });
+    const detail = buildJourneyDetail({ id: 50, entries: [entry] });
+    useJourneyStore.setState({ current: detail });
+
+    server.use(
+      http.post('/api/journeys/entries/100/photos', () =>
+        HttpResponse.error()
+      )
+    );
+    const file = new File(['x'], 'fail.jpg', { type: 'image/jpeg' });
+    const result = await useJourneyStore.getState().uploadPhotos(100, [file]);
+    expect(result.succeeded).toHaveLength(0);
+    expect(result.failed).toHaveLength(1);
+    expect(result.failed[0]).toBe(file);
+    const storedEntry = useJourneyStore.getState().current?.entries.find(e => e.id === 100);
+    expect(storedEntry?.photos).toHaveLength(0);
+  });
+
+  it('FE-STORE-JOURNEY-018: uploadPhotos merges each file result incrementally on partial success', async () => {
+    const entry = buildEntry({ id: 100, photos: [] });
+    const detail = buildJourneyDetail({ id: 50, entries: [entry] });
+    useJourneyStore.setState({ current: detail });
+
+    const photo1 = buildPhoto({ id: 91, entry_id: 100 });
+    const photo2 = buildPhoto({ id: 92, entry_id: 100 });
+    let callCount = 0;
+    server.use(
+      http.post('/api/journeys/entries/100/photos', () => {
+        callCount++;
+        if (callCount === 1) return HttpResponse.json({ photos: [photo1] });
+        return HttpResponse.error();
+      })
+    );
+    const file1 = new File(['a'], 'ok.jpg', { type: 'image/jpeg' });
+    const file2 = new File(['b'], 'fail.jpg', { type: 'image/jpeg' });
+    // concurrency:1 so order is deterministic
+    const result = await useJourneyStore.getState().uploadPhotos(100, [file1, file2], undefined);
+    expect(result.succeeded).toHaveLength(1);
+    expect(result.succeeded[0].id).toBe(photo1.id);
+    expect(result.failed).toHaveLength(1);
+    const storedEntry = useJourneyStore.getState().current?.entries.find(e => e.id === 100);
+    expect(storedEntry?.photos).toHaveLength(1);
+    void photo2; // referenced to avoid lint warning
+  });
+
   // ── deletePhoto ──────────────────────────────────────────────────────────
 
   it('FE-STORE-JOURNEY-014: deletePhoto removes photo from entry', async () => {

client/src/store/journeyStore.ts

@@ -1,5 +1,6 @@
 import { create } from 'zustand'
 import { journeyApi } from '../api/client'
+import { uploadFilesResilient, type ResilientResult, type UploadProgress } from '../utils/uploadQueue'
 
 export interface Journey {
   id: number
@@ -121,8 +122,8 @@ interface JourneyState {
   deleteEntry: (entryId: number) => Promise<void>
   reorderEntries: (journeyId: number, orderedIds: number[]) => Promise<void>
 
-  uploadPhotos: (entryId: number, formData: FormData) => Promise<JourneyPhoto[]>
-  uploadGalleryPhotos: (journeyId: number, formData: FormData) => Promise<GalleryPhoto[]>
+  uploadPhotos: (entryId: number, files: File[], cbs?: { onProgress?: (p: UploadProgress) => void }) => Promise<ResilientResult<JourneyPhoto>>
+  uploadGalleryPhotos: (journeyId: number, files: File[], cbs?: { onProgress?: (p: UploadProgress) => void }) => Promise<ResilientResult<GalleryPhoto>>
   unlinkPhoto: (entryId: number, journeyPhotoId: number) => Promise<void>
   deleteGalleryPhoto: (journeyId: number, journeyPhotoId: number) => Promise<void>
   deletePhoto: (photoId: number) => Promise<void>
@@ -237,32 +238,49 @@ export const useJourneyStore = create<JourneyState>((set, get) => ({
     }
   },
 
-  uploadPhotos: async (entryId, formData) => {
-    const data = await journeyApi.uploadPhotos(entryId, formData)
-    const photos = data.photos || []
-    set(s => {
-      if (!s.current) return s
-      return {
-        current: {
-          ...s.current,
-          entries: s.current.entries.map(e =>
-            e.id === entryId ? { ...e, photos: [...(e.photos || []), ...photos] } : e
-          ),
-          gallery: [...(s.current.gallery || []), ...(data.gallery || [])],
-        },
-      }
-    })
-    return photos
+  uploadPhotos: async (entryId, files, cbs) => {
+    return uploadFilesResilient<JourneyPhoto>(
+      files,
+      async (file, opts) => {
+        const fd = new FormData()
+        fd.append('photos', file)
+        const data = await journeyApi.uploadPhotos(entryId, fd, opts)
+        const photos: JourneyPhoto[] = data.photos || []
+        const gallery: GalleryPhoto[] = data.gallery || []
+        set(s => {
+          if (!s.current) return s
+          return {
+            current: {
+              ...s.current,
+              entries: s.current.entries.map(e =>
+                e.id === entryId ? { ...e, photos: [...(e.photos || []), ...photos] } : e
+              ),
+              gallery: [...(s.current.gallery || []), ...gallery],
+            },
+          }
+        })
+        return photos
+      },
+      { onProgress: cbs?.onProgress },
+    )
   },
 
-  uploadGalleryPhotos: async (journeyId, formData) => {
-    const data = await journeyApi.uploadGalleryPhotos(journeyId, formData)
-    const photos: GalleryPhoto[] = data.photos || []
-    set(s => {
-      if (!s.current || s.current.id !== journeyId) return s
-      return { current: { ...s.current, gallery: [...(s.current.gallery || []), ...photos] } }
-    })
-    return photos
+  uploadGalleryPhotos: async (journeyId, files, cbs) => {
+    return uploadFilesResilient<GalleryPhoto>(
+      files,
+      async (file, opts) => {
+        const fd = new FormData()
+        fd.append('photos', file)
+        const data = await journeyApi.uploadGalleryPhotos(journeyId, fd, opts)
+        const photos: GalleryPhoto[] = data.photos || []
+        set(s => {
+          if (!s.current || s.current.id !== journeyId) return s
+          return { current: { ...s.current, gallery: [...(s.current.gallery || []), ...photos] } }
+        })
+        return photos
+      },
+      { onProgress: cbs?.onProgress },
+    )
   },
 
   unlinkPhoto: async (entryId, journeyPhotoId) => {

client/src/utils/uploadQueue.ts

@@ -0,0 +1,106 @@
+import type { AxiosProgressEvent } from 'axios'
+
+export interface UploadProgress {
+  done: number
+  total: number
+  failed: number
+  percent: number
+}
+
+export interface ResilientResult<T> {
+  succeeded: T[]
+  failed: File[]
+}
+
+export interface UploadOpts {
+  onUploadProgress: (e: AxiosProgressEvent) => void
+  idempotencyKey: string
+}
+
+const sleep = (ms: number) => new Promise<void>(r => setTimeout(r, ms))
+
+function isRetryable(err: unknown): boolean {
+  if (err && typeof err === 'object' && 'response' in err) {
+    const status = (err as { response?: { status?: number } }).response?.status
+    if (status !== undefined && status >= 400 && status < 500) return false
+  }
+  return true
+}
+
+export async function uploadFilesResilient<T>(
+  files: File[],
+  uploadOne: (file: File, opts: UploadOpts) => Promise<T[]>,
+  cbs?: {
+    concurrency?: number
+    retries?: number
+    onProgress?: (p: UploadProgress) => void
+    onUploaded?: (items: T[]) => void
+  },
+): Promise<ResilientResult<T>> {
+  const concurrency = cbs?.concurrency ?? 3
+  const maxRetries = cbs?.retries ?? 2
+
+  const totalBytes = files.reduce((s, f) => s + f.size, 0)
+  const loadedMap = new Map<number, number>()
+  let doneCount = 0
+  let failedCount = 0
+
+  const emitProgress = () => {
+    if (!cbs?.onProgress) return
+    const sumLoaded = Array.from(loadedMap.values()).reduce((a, b) => a + b, 0)
+    const percent = totalBytes > 0 ? Math.round((sumLoaded / totalBytes) * 100) : 0
+    cbs.onProgress({ done: doneCount, total: files.length, failed: failedCount, percent })
+  }
+
+  const succeeded: T[] = []
+  const failedFiles: File[] = []
+
+  let idx = 0
+
+  async function worker() {
+    while (true) {
+      const i = idx++
+      if (i >= files.length) break
+      const file = files[i]
+      const idempotencyKey = crypto.randomUUID()
+      loadedMap.set(i, 0)
+
+      let items: T[] | null = null
+      for (let attempt = 0; attempt <= maxRetries; attempt++) {
+        if (attempt > 0) await sleep(400 * attempt)
+        try {
+          items = await uploadOne(file, {
+            idempotencyKey,
+            onUploadProgress: (e) => {
+              loadedMap.set(i, e.loaded)
+              emitProgress()
+            },
+          })
+          break
+        } catch (err) {
+          if (!isRetryable(err) || attempt === maxRetries) {
+            items = null
+            break
+          }
+        }
+      }
+
+      if (items !== null) {
+        succeeded.push(...items)
+        cbs?.onUploaded?.(items)
+        loadedMap.set(i, file.size)
+        doneCount++
+      } else {
+        failedFiles.push(file)
+        loadedMap.set(i, 0)
+        failedCount++
+      }
+      emitProgress()
+    }
+  }
+
+  const workers = Array.from({ length: Math.min(concurrency, files.length) }, () => worker())
+  await Promise.all(workers)
+
+  return { succeeded, failed: failedFiles }
+}