feat: add derniere_entree column and filter recent stock entries on 6-month tab

- Exclude products with a stock entry in the last 6 months (NOT EXISTS subquery)
- Add derniere_entree subquery to SQL (last genremvt 1/2 movement date)
- Display derniere_entree column in table and Excel export

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

src/app/(dashboard)/stock-negatif/client.tsx

@@ -377,15 +377,15 @@ function TabSansVente6Mois({ rows, magasin }: { rows: PgSansVente6MoisRow[]; mag
         const ExcelJS = (await import("exceljs")).default;
         const wb = new ExcelJS.Workbook();
         const ws = wb.addWorksheet("Sans vente 6 mois");
-        ws.addRow(["CODEIN", "Libellé", "Fournisseur", "Magasin", "Stock actuel", "Dernière vente", "Jours sans vente"]);
+        ws.addRow(["CODEIN", "Libellé", "Fournisseur", "Magasin", "Stock actuel", "Dernière vente", "Jours sans vente", "Dernière entrée"]);
         ws.getRow(1).eachCell(cell => {
             cell.fill = { type: "pattern", pattern: "solid", fgColor: { argb: "FF1E293B" } };
             cell.font = { color: { argb: "FFFFFFFF" }, bold: true };
             cell.alignment = { vertical: "middle", horizontal: "center" };
         });
         ws.getRow(1).height = 22;
-        for (const r of sorted) ws.addRow([r.codein, r.libelle1, r.fournisseur, r.site, r.stock_actuel, fmtDate(r.derniere_vente), r.jours_sans_vente ?? "—"]);
-        ws.columns = [{ width: 16 }, { width: 30 }, { width: 24 }, { width: 10 }, { width: 12 }, { width: 18 }, { width: 16 }];
+        for (const r of sorted) ws.addRow([r.codein, r.libelle1, r.fournisseur, r.site, r.stock_actuel, fmtDate(r.derniere_vente), r.jours_sans_vente ?? "—", fmtDate(r.derniere_entree)]);
+        ws.columns = [{ width: 16 }, { width: 30 }, { width: 24 }, { width: 10 }, { width: 12 }, { width: 18 }, { width: 16 }, { width: 18 }];
         const buffer = await wb.xlsx.writeBuffer();
         const blob = new Blob([buffer], { type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" });
         const url = URL.createObjectURL(blob);
@@ -438,11 +438,12 @@ function TabSansVente6Mois({ rows, magasin }: { rows: PgSansVente6MoisRow[]; mag
                             {th("stock_actuel", "Stock actuel")}
                             {th("derniere_vente", "Dernière vente")}
                             {th("jours_sans_vente", "Jours sans vente")}
+                            {th("derniere_entree", "Dernière entrée")}
                         </tr>
                     </thead>
                     <tbody className="divide-y divide-gray-100">
                         {sorted.length === 0 && (
-                            <tr><td colSpan={7} className="px-3 py-8 text-center text-gray-400">Aucun article trouvé</td></tr>
+                            <tr><td colSpan={8} className="px-3 py-8 text-center text-gray-400">Aucun article trouvé</td></tr>
                         )}
                         {sorted.map((row, i) => (
                             <tr key={`${row.codein}-${row.site}-${i}`} className="hover:bg-gray-50 transition-colors">
@@ -458,6 +459,7 @@ function TabSansVente6Mois({ rows, magasin }: { rows: PgSansVente6MoisRow[]; mag
                                     style={{ color: row.jours_sans_vente && row.jours_sans_vente > 365 ? "#ef4444" : "#6b7280" }}>
                                     {row.jours_sans_vente != null ? row.jours_sans_vente.toLocaleString("fr-FR") : "—"}
                                 </td>
+                                <td className="px-3 py-2 text-gray-600 text-xs">{fmtDate(row.derniere_entree)}</td>
                             </tr>
                         ))}
                     </tbody>

src/lib/pg-ff-client.ts

@@ -931,12 +931,14 @@ export interface PgSansVente6MoisRow {
     site: string;
     stock_actuel: number;
     derniere_vente: string | null;
+    derniere_entree: string | null;
     jours_sans_vente: number | null;
 }
 
 /**
  * Retourne les articles ayant du stock disponible (qte > 0)
- * mais dont la dernière vente remonte à plus de 6 mois (ou n'ont jamais été vendus).
+ * dont la dernière vente remonte à plus de 6 mois (ou jamais vendus)
+ * ET dont la dernière entrée en stock remonte aussi à plus de 6 mois.
  */
 export async function pgGetSansVente6Mois(site?: string): Promise<PgSansVente6MoisRow[]> {
     const siteFilter = site ? sql`AND cs.site = ${site}` : sql``;
@@ -951,7 +953,14 @@ export async function pgGetSansVente6Mois(site?: string): Promise<PgSansVente6Mo
             CASE
                 WHEN cs.dernierevente IS NULL THEN NULL
                 ELSE (CURRENT_DATE - cs.dernierevente::date)
-            END AS jours_sans_vente
+            END AS jours_sans_vente,
+            (
+                SELECT MAX(m.datmvt)::text
+                FROM mvtart m
+                WHERE m.artnoid = cs.artnoid
+                  AND m.site = cs.site
+                  AND m.genremvt IN (1, 2)
+            ) AS derniere_entree
         FROM cube_stock cs
         JOIN articles a ON a.no_id = cs.artnoid
         JOIN artfou1 af ON af.art_no_id = a.no_id AND af.preference = 1
@@ -962,6 +971,13 @@ export async function pgGetSansVente6Mois(site?: string): Promise<PgSansVente6Mo
               cs.dernierevente IS NULL
               OR cs.dernierevente < CURRENT_DATE - INTERVAL '6 months'
           )
+          AND NOT EXISTS (
+              SELECT 1 FROM mvtart m2
+              WHERE m2.artnoid = cs.artnoid
+                AND m2.site = cs.site
+                AND m2.genremvt IN (1, 2)
+                AND m2.datmvt >= CURRENT_DATE - INTERVAL '6 months'
+          )
           ${siteFilter}
         ORDER BY cs.dernierevente ASC NULLS FIRST
     `);