fix: extractList includes API-specific wrapper keys, diag uses real codefou

- extractList now explicitly checks "mouvements", "articles", "fournisseurs",
  "ventes", "stocks", "commandes" wrapper keys before generic array fallback
- Diag endpoint auto-fetches first real codefou from fournisseurs instead
  of hardcoded "AUXENCE" (which was supplier nom, not actual codefou)

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

src/app/api/diag/route.ts

@@ -30,13 +30,24 @@ async function probe(url: string) {
 
 export async function GET(req: NextRequest) {
     const { searchParams } = new URL(req.url);
-    const codefou = searchParams.get("codefou") ?? "AUXENCE";
 
     // Date range: 12 derniers mois
     const now = new Date();
     const dateFin = new Date(now.getFullYear(), now.getMonth(), 0).toISOString().slice(0, 10);
     const dateDebut = new Date(now.getFullYear(), now.getMonth() - 12, 1).toISOString().slice(0, 10);
 
+    // Récupérer le premier codefou réel depuis l'API (si pas fourni en param)
+    let codefou = searchParams.get("codefou");
+    if (!codefou) {
+        try {
+            const res = await fetch(`${FF_API_BASE}/api/fournisseurs?limit=1`, { cache: "no-store" });
+            const data = await res.json();
+            const list = Array.isArray(data) ? data : (Object.values(data).find(v => Array.isArray(v)) as unknown[] ?? []);
+            if (list.length > 0) codefou = (list[0] as Record<string, unknown>).codefou as string ?? null;
+        } catch { /* ignore */ }
+        codefou ??= "D001";
+    }
+
     const [
         fournisseurs,
         articles,

src/lib/api-ff-client.ts

@@ -85,7 +85,7 @@ function extractList(data: unknown): any[] {
     if (Array.isArray(data)) return data;
     const d = data as Record<string, unknown>;
     // Essaie les wrappers courants
-    for (const key of ["items", "data", "result", "results", "records", "list"]) {
+    for (const key of ["items", "data", "result", "results", "records", "list", "mouvements", "articles", "fournisseurs", "ventes", "stocks", "commandes"]) {
         if (Array.isArray(d[key])) return d[key] as unknown[];
     }
     // Cherche la première propriété qui est un tableau