Checkpoint: Bouton Télécharger toujours visible pour les factures en état Validé dans InvoicesBAP, même après rechargement. Le pdfUrl est récupéré depuis bapHistory via une nouvelle route tRPC getBapPdfUrls. Nommage uniforme Date - Fournisseur - N°Facture.pdf sur tous les points d'export.

server/db.ts

@@ -1,4 +1,4 @@
-import { eq, and, desc, sql } from "drizzle-orm";
+import { eq, and, desc, sql, inArray } from "drizzle-orm";
 import { drizzle } from "drizzle-orm/mysql2";
 import { 
   InsertUser, 
@@ -891,3 +891,31 @@ export async function deleteAllLearnings(userId: number): Promise<void> {
   if (!db) return;
   await db.delete(invoiceLearnings).where(eq(invoiceLearnings.userId, userId));
 }
+
+export async function getBapPdfUrlByInvoiceId(invoiceId: number): Promise<string | undefined> {
+  const db = await getDb();
+  if (!db) return undefined;
+  const results = await db.select({ pdfUrl: bapHistory.pdfUrl })
+    .from(bapHistory)
+    .where(eq(bapHistory.invoiceId, invoiceId))
+    .orderBy(desc(bapHistory.validatedAt))
+    .limit(1);
+  return results[0]?.pdfUrl ?? undefined;
+}
+
+export async function getBapPdfUrlsByInvoiceIds(invoiceIds: number[]): Promise<Record<number, string>> {
+  const db = await getDb();
+  if (!db || invoiceIds.length === 0) return {};
+  const results = await db.select({ invoiceId: bapHistory.invoiceId, pdfUrl: bapHistory.pdfUrl, validatedAt: bapHistory.validatedAt })
+    .from(bapHistory)
+    .where(inArray(bapHistory.invoiceId, invoiceIds))
+    .orderBy(desc(bapHistory.validatedAt));
+  // Keep only the most recent pdfUrl per invoiceId
+  const map: Record<number, string> = {};
+  for (const row of results) {
+    if (row.invoiceId && row.pdfUrl && !map[row.invoiceId]) {
+      map[row.invoiceId] = row.pdfUrl;
+    }
+  }
+  return map;
+}