diff --git a/src/app.js b/src/app.js
index cd6978c..59b0413 100644
--- a/src/app.js
+++ b/src/app.js
@@ -58,6 +58,7 @@ app.listen(PORT, () => {
   console.log('  GET /api/articles[?search=&codein=&ean=&codefou=&actif=&page=&limit=]');
   console.log('  GET /api/articles/:id');
   console.log('  GET /api/articles/:id/referentiel');
+  console.log('  GET /api/articles/:id/dernier-fournisseur[?site=]');
   console.log('  GET /api/articles/:id/mouvements');
   console.log('  GET /api/fournisseurs[?search=]');
   console.log('  GET /api/fournisseurs/:code/articles');
diff --git a/src/routes/articles.js b/src/routes/articles.js
index 9f9002a..82a065d 100644
--- a/src/routes/articles.js
+++ b/src/routes/articles.js
@@ -258,6 +258,38 @@ router.get('/:id/referentiel', async (req, res) => {
   }
 });
 
+// GET /api/articles/:id/dernier-fournisseur?site=
+// Retourne le fournisseur réel (dernière entrée en stock GenreMvt=1) par site
+// C'est le seul moyen fiable d'identifier qui a livré le produit actuellement en rayon
+router.get('/:id/dernier-fournisseur', async (req, res) => {
+  try {
+    const pool = getPool();
+    const { site = '' } = req.query;
+
+    const result = await pool.query(`
+      SELECT DISTINCT ON (m.Site)
+        m.Site,
+        m.DatMvt        AS date_derniere_entree,
+        m.CODEFOU       AS codefou,
+        fa.RAISONSOCIALE AS nom_fournisseur,
+        m.QteMvt        AS qte_entree,
+        m.Prmp          AS prmp
+      FROM MvtArt m
+      LEFT JOIN FOUADR1 fa ON fa.CODE = m.CODEFOU AND fa.SIT_CODE = '000'
+      WHERE m.ArtNoId = $1
+        AND m.GenreMvt = 1
+        AND m.CODEFOU IS NOT NULL
+        AND m.CODEFOU != ''
+        AND ($2 = '' OR m.Site LIKE $2)
+      ORDER BY m.Site, m.DatMvt DESC
+    `, [req.params.id, `%${site}%`]);
+
+    res.json({ artnoid: req.params.id, fournisseurs_par_site: result.rows });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
 // GET /api/articles/:id/mouvements?dateDebut=&dateFin=&site=&page=&limit=
 router.get('/:id/mouvements', async (req, res) => {
   try {
diff --git a/src/routes/mouvements.js b/src/routes/mouvements.js
index b768a37..8ede504 100644
--- a/src/routes/mouvements.js
+++ b/src/routes/mouvements.js
@@ -51,7 +51,27 @@ router.get('/articles', async (req, res) => {
         a.CODEIN, a.LIBELLE1,
         m.LibMvt, m.GenreMvt, m.QteMvt, m.ValMvt,
         m.MntMvtHt, m.MntMvtTTC, m.MargeMvt,
-        m.QteStock, m.Prmp, m.ValStock, m.CODEFOU
+        m.QteStock, m.Prmp, m.ValStock,
+        m.CODEFOU AS codefou_mouvement,
+        -- Pour les ventes (GenreMvt=3), le vrai fournisseur = dernière entrée avant cette vente
+        CASE WHEN m.GenreMvt = 3 THEN (
+          SELECT e.CODEFOU FROM MvtArt e
+          WHERE e.ArtNoId = m.ArtNoId AND e.Site = m.Site
+            AND e.GenreMvt = 1 AND e.CODEFOU IS NOT NULL AND e.CODEFOU != ''
+            AND e.DatMvt <= m.DatMvt
+          ORDER BY e.DatMvt DESC LIMIT 1
+        ) ELSE m.CODEFOU END AS codefou_reel,
+        CASE WHEN m.GenreMvt = 3 THEN (
+          SELECT fa.RAISONSOCIALE FROM MvtArt e
+          LEFT JOIN FOUADR1 fa ON fa.CODE = e.CODEFOU AND fa.SIT_CODE = '000'
+          WHERE e.ArtNoId = m.ArtNoId AND e.Site = m.Site
+            AND e.GenreMvt = 1 AND e.CODEFOU IS NOT NULL AND e.CODEFOU != ''
+            AND e.DatMvt <= m.DatMvt
+          ORDER BY e.DatMvt DESC LIMIT 1
+        ) ELSE (
+          SELECT fa2.RAISONSOCIALE FROM FOUADR1 fa2
+          WHERE fa2.CODE = m.CODEFOU AND fa2.SIT_CODE = '000'
+        ) END AS nom_fournisseur_reel
       FROM MvtArt m
       JOIN ARTICLES a ON a.NO_ID = m.ArtNoId
       WHERE m.DatMvt BETWEEN $1 AND $2