feat: restrict gamme/export/exports-page to admin; fix create user button style

- Non-admin users see gamme as read-only badge (no select)
- Export button hidden for non-admin in grid
- Save drafts button hidden for non-admin
- Exports page hidden in sidebar for non-admin
- Create user button: explicit blue style (was unreadable with apple-btn-primary)

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

src/components/shared/sidebar.tsx

@@ -14,7 +14,7 @@ const NAV_ITEMS = [
     { icon: TrendingUp, label: "Analytics", href: "/analytics" },
     { icon: Trophy, label: "Hit Parade", href: "/hit-parade" },
     { icon: Camera, label: "Snapshots", href: "/snapshots" },
-    { icon: FileDown, label: "Exports", href: "/exports" },
+    { icon: FileDown, label: "Exports", href: "/exports", adminOnly: true },
     { icon: Settings, label: "Paramètres", href: "/settings", adminOnly: true },
 ];
 

src/features/admin/components/user-management.tsx

@@ -147,7 +147,7 @@ export function UserManagement() {
                     <button
                         type="submit"
                         disabled={isCreating}
-                        className="apple-btn-primary w-full justify-center"
+                        className="flex items-center gap-2 justify-center w-full px-4 py-2.5 rounded-xl bg-blue-600 hover:bg-blue-500 disabled:opacity-50 text-white text-sm font-semibold transition-colors"
                     >
                         {isCreating ? <Loader2 className="w-4 h-4 animate-spin" /> : <Check className="w-4 h-4" />}
                         Créer le compte

src/features/grid/components/grid-client.tsx

@@ -10,6 +10,7 @@ import { useGridStore } from "@/features/grid/store/use-grid-store";
 import { useSaveDrafts } from "@/features/grid/hooks/use-save-drafts";
 import type { ProductRow } from "@/types/grid";
 import { CheckCircle, AlertCircle, Loader2 } from "lucide-react";
+import { useSession } from "next-auth/react";
 
 import { useSearchParams } from "next/navigation";
 import { computeProductScores } from "@/lib/score-engine";
@@ -24,6 +25,8 @@ interface GridClientProps {
 }
 
 export function GridClient({ initialRows, codeFournisseur, nomFournisseur, fournisseurs, magasins, magasin }: GridClientProps) {
+    const { data: session } = useSession();
+    const isAdmin = (session?.user as any)?.role === "admin";
     const setRows = useGridStore((s) => s.setRows);
     const setActiveGridQuery = useGridStore((s) => s.setActiveGridQuery);
     const setFilter = useGridStore((s) => s.setFilter);
@@ -98,8 +101,8 @@ export function GridClient({ initialRows, codeFournisseur, nomFournisseur, fourn
                 </div>
                 <div className="flex items-center gap-3">
                     <div id="grid-toolbar-actions"></div>
-                    <ExportDropdown nomFournisseur={nomFournisseur} />
+                    {isAdmin && <ExportDropdown nomFournisseur={nomFournisseur} />}
-                    {hasDrafts && (
+                    {isAdmin && hasDrafts && (
                         <button
                             onClick={handleSave}
                             disabled={isPending}
@@ -141,6 +144,7 @@ export function GridClient({ initialRows, codeFournisseur, nomFournisseur, fourn
             <div className="flex-1 min-h-0 min-w-0">
                 <HeatmapGrid
                     onSelectionChange={setSelectedCodeins}
+                    isAdmin={isAdmin}
                 />
             </div>
 

src/features/grid/components/heatmap-grid.tsx

@@ -83,6 +83,7 @@ function getStoreConfig(name: string) {
 
 interface HeatmapGridProps {
     onSelectionChange?: (codeins: string[]) => void;
+    isAdmin?: boolean;
 }
 
 // =========================================================================
@@ -90,7 +91,7 @@ interface HeatmapGridProps {
 // =========================================================================
 
 // 1. Composant isolé pour la Cellule Gamme (évite le re-render des colonnes)
-const GammeCell = React.memo(({ row }: { row: ProductRow }) => {
+const GammeCell = React.memo(({ row, isAdmin }: { row: ProductRow; isAdmin?: boolean }) => {
     // Abonnement ultra-ciblé : la cellule ne re-render que si SA valeur change
     const codein = row.codein;
     const isDraft = useGridStore((s) => s.draftChanges[codein] !== undefined);
@@ -98,6 +99,23 @@ const GammeCell = React.memo(({ row }: { row: ProductRow }) => {
     const setDraftGamme = useGridStore((s) => s.setDraftGamme);
 
     const isModified = row.codeGamme !== row.codeGammeInit && row.codeGammeInit !== null;
+    const displayValue = (!effectiveGamme || effectiveGamme.trim() === "") ? "Aucune" : effectiveGamme;
+
+    if (!isAdmin) {
+        return (
+            <div className={[
+                "w-full text-xs font-bold rounded-lg py-1.5 px-2 text-center",
+                displayValue === "A" ? "bg-emerald-500/10 text-emerald-700" :
+                displayValue === "B" ? "bg-blue-500/10 text-blue-700" :
+                displayValue === "C" ? "bg-amber-500/10 text-amber-700" :
+                displayValue === "Y" ? "bg-violet-500/10 text-violet-700" :
+                displayValue === "Z" ? "bg-rose-500/10 text-rose-700" :
+                "bg-slate-500/10 text-slate-500"
+            ].join(" ")}>
+                {displayValue === "Aucune" ? "—" : displayValue}
+            </div>
+        );
+    }
 
     return (
         <div className="relative group/gamme">
@@ -249,7 +267,7 @@ function CellDetailModal({ d, activeMagasin, onClose }: { d: CellDetailData; act
 
 // =========================================================================
 
-export function HeatmapGrid({ onSelectionChange }: HeatmapGridProps) {
+export function HeatmapGrid({ onSelectionChange, isAdmin }: HeatmapGridProps) {
     // L'abonnement doit être minimal ici ! PAS de draftChanges ni de setDraftGamme.
     const { rows, filters, displayDensity, draftChanges, activeMagasin } = useGridStore();
 
@@ -626,7 +644,7 @@ export function HeatmapGrid({ onSelectionChange }: HeatmapGridProps) {
             id: "gamme",
             header: () => <div className="text-center w-full">Gamme</div>,
             size: 110,
-            cell: ({ row }) => <GammeCell row={row.original} />,
+            cell: ({ row }) => <GammeCell row={row.original} isAdmin={isAdmin} />,
         },
         {
             id: "ai",