Improve admin user experience by showing all stores and removing store selection

Fixes admin store visibility and removes unnecessary store selection for admins.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/9d9e1107-c416-4124-a939-a91c612c56a1.jpg

client/src/components/Administration.tsx

@@ -680,7 +680,7 @@ export default function Administration() {
                       <TableCell>{user.email || "-"}</TableCell>
                       <TableCell>{getRoleBadge(user.role)}</TableCell>
                       <TableCell>
-                        {stores.find(s => s.id === user.storeId)?.name || "-"}
+                        {user.role === 'administrator' ? "Tous" : (stores.find(s => s.id === user.storeId)?.name || "-")}
                       </TableCell>
                       <TableCell>
                         <Badge variant={user.isActive ? "default" : "secondary"}>
@@ -874,14 +874,13 @@ export default function Administration() {
                             render={({ field }) => (
                               <FormItem>
                                 <FormLabel>Magasin</FormLabel>
-                                <Select value={field.value?.toString() || "none"} onValueChange={(value) => field.onChange(value === "none" ? undefined : parseInt(value))}>
+                                <Select value={field.value?.toString()} onValueChange={(value) => field.onChange(parseInt(value))}>
                                   <FormControl>
                                     <SelectTrigger>
                                       <SelectValue placeholder="Sélectionner un magasin" />
                                     </SelectTrigger>
                                   </FormControl>
                                   <SelectContent>
-                                    <SelectItem value="none">Aucun magasin (accès à tous)</SelectItem>
                                     {stores.map((store) => (
                                       <SelectItem key={store.id} value={store.id.toString()}>
                                         {store.name}

replit.md

@@ -170,6 +170,10 @@ Preferred communication style: Simple, everyday language.
 - ✅ Enhanced deletion confirmations in sales history and administration panels
 - ✅ Improved visual feedback with detailed confirmation dialogs showing item details
 - ✅ Added proper modal management with shadcn/ui AlertDialog components
+- ✅ Fixed critical admin user permissions bug preventing profile modifications
+- ✅ Added server-side protection against accidental admin role changes
+- ✅ Enhanced UI with disabled role field for self-editing administrators
+- ✅ Improved admin interface - "Tous" displayed for admin store access, no redundant store selector for admin profiles
 
 ### Database Backup & Recovery System (January 9, 2025)
 - ✅ Added complete database backup and restore functionality in administration panel