feat(shopping): photo par article dans le catalogue

- Upload photo (context=product → thumbnail 150×150) dans CatalogueModal
- Miniature affichée dans la liste et dans le formulaire
- Schémas ProductCreate/Update/Response exposent image_path + thumbnail_path
- Backend sert /media/* via StaticFiles (FastAPI)
- Proxy /media → backend dans vite.config et nginx.conf

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/api/shopping.ts

@@ -34,6 +34,8 @@ export interface Product {
   quantity_per_unit: string | null
   default_store_id: string | null
   frequency_score: number
+  image_path: string | null
+  thumbnail_path: string | null
 }
 
 export interface ProductCreate {
@@ -46,6 +48,8 @@ export interface ProductCreate {
   price?: string
   quantity_per_unit?: string
   default_store_id?: string
+  image_path?: string
+  thumbnail_path?: string
 }
 
 export interface ProductUpdate {
@@ -58,6 +62,8 @@ export interface ProductUpdate {
   price?: string
   quantity_per_unit?: string
   default_store_id?: string
+  image_path?: string
+  thumbnail_path?: string
 }
 
 export interface ShoppingItem {

frontend/src/components/shopping/CatalogueModal.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react'
+import { useState, useEffect, useRef } from 'react'
 import type { Product, ProductCreate, Store } from '../../api/shopping'
 import { searchProducts, createProduct, updateProduct, deleteProduct } from '../../api/shopping'
 import Modal from '../Modal'
@@ -26,6 +26,8 @@ const emptyForm: ProductCreate = {
   name: '', brand: '', category: '', description: '',
   default_unit: '', barcode: '', price: '', quantity_per_unit: '',
   default_store_id: undefined,
+  image_path: undefined,
+  thumbnail_path: undefined,
 }
 
 export default function CatalogueModal({ stores, onClose }: CatalogueModalProps) {
@@ -35,7 +37,9 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
   const [creating, setCreating] = useState(false)
   const [form, setForm] = useState<ProductCreate>(emptyForm)
   const [saving, setSaving] = useState(false)
+  const [uploading, setUploading] = useState(false)
   const [error, setError] = useState<string | null>(null)
+  const photoRef = useRef<HTMLInputElement>(null)
 
   useEffect(() => {
     void loadProducts()
@@ -67,6 +71,8 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
       price: p.price ?? '',
       quantity_per_unit: p.quantity_per_unit ?? '',
       default_store_id: p.default_store_id ?? undefined,
+      image_path: p.image_path ?? undefined,
+      thumbnail_path: p.thumbnail_path ?? undefined,
     })
     setEditing(p)
     setCreating(false)
@@ -90,6 +96,28 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
       price: f.price?.trim() || undefined,
       quantity_per_unit: f.quantity_per_unit?.trim() || undefined,
       default_store_id: f.default_store_id || undefined,
+      image_path: f.image_path || undefined,
+      thumbnail_path: f.thumbnail_path || undefined,
+    }
+  }
+
+  async function handlePhotoChange(e: React.ChangeEvent<HTMLInputElement>) {
+    const file = e.target.files?.[0]
+    if (!file) return
+    setUploading(true)
+    setError(null)
+    try {
+      const fd = new FormData()
+      fd.append('file', file)
+      const res = await fetch('/api/media/upload?context=product', { method: 'POST', body: fd })
+      if (!res.ok) throw new Error('Upload échoué')
+      const data = await res.json() as { file_path: string; thumbnail_path: string | null }
+      setForm(f => ({ ...f, image_path: data.file_path, thumbnail_path: data.thumbnail_path ?? undefined }))
+    } catch {
+      setError('Erreur lors de l\'upload photo')
+    } finally {
+      setUploading(false)
+      if (photoRef.current) photoRef.current.value = ''
     }
   }
 
@@ -124,6 +152,7 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
   }
 
   const isFormOpen = creating || editing !== null
+  const previewSrc = form.thumbnail_path ?? form.image_path
 
   return (
     <Modal title="Catalogue d'articles" onClose={onClose} width={580}>
@@ -134,6 +163,38 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
       {isFormOpen ? (
         /* ── Formulaire création / édition ── */
         <div style={{ display: 'flex', flexDirection: 'column', gap: 10 }}>
+          {/* Zone photo */}
+          <div style={{ display: 'flex', alignItems: 'center', gap: 10 }}>
+            {previewSrc ? (
+              <img
+                src={`/media/${previewSrc}`}
+                alt="photo"
+                style={{ width: 56, height: 56, objectFit: 'cover', borderRadius: 8, flexShrink: 0 }}
+              />
+            ) : (
+              <div style={{
+                width: 56, height: 56, borderRadius: 8, flexShrink: 0,
+                background: 'var(--bg-4)', border: '1px dashed var(--bg-5)',
+                display: 'flex', alignItems: 'center', justifyContent: 'center',
+                color: 'var(--ink-4)', fontSize: 22,
+              }}>📷</div>
+            )}
+            <input ref={photoRef} type="file" accept="image/*" capture="environment" style={{ display: 'none' }} onChange={handlePhotoChange} />
+            <button
+              type="button"
+              onClick={() => photoRef.current?.click()}
+              disabled={uploading}
+              style={{ padding: '6px 14px', borderRadius: 8, border: '1px solid var(--bg-5)', background: 'var(--bg-4)', color: 'var(--ink-2)', cursor: 'pointer', fontFamily: 'var(--font-ui)', fontSize: 13 }}
+            >{uploading ? '…' : previewSrc ? 'Changer' : 'Ajouter photo'}</button>
+            {previewSrc && (
+              <button
+                type="button"
+                onClick={() => setForm(f => ({ ...f, image_path: undefined, thumbnail_path: undefined }))}
+                style={{ padding: '6px 10px', borderRadius: 8, border: 'none', background: 'transparent', color: 'var(--err)', cursor: 'pointer', fontSize: 14 }}
+              >✕</button>
+            )}
+          </div>
+
           <input
             style={inputStyle} placeholder="Nom *" value={form.name}
             onChange={e => setForm(f => ({ ...f, name: e.target.value }))}
@@ -236,6 +297,15 @@ export default function CatalogueModal({ stores, onClose }: CatalogueModalProps)
                   userSelect: 'none',
                 }}
               >
+                {p.thumbnail_path || p.image_path ? (
+                  <img
+                    src={`/media/${p.thumbnail_path ?? p.image_path}`}
+                    alt=""
+                    style={{ width: 36, height: 36, objectFit: 'cover', borderRadius: 6, flexShrink: 0 }}
+                  />
+                ) : (
+                  <div style={{ width: 36, height: 36, borderRadius: 6, background: 'var(--bg-4)', flexShrink: 0 }} />
+                )}
                 <div style={{ flex: 1, minWidth: 0 }}>
                   <div style={{ color: 'var(--ink-1)', fontFamily: 'var(--font-ui)', fontSize: 14, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
                     {p.name}