Fix: Conversion complète vers PrimeReact et corrections build

CONVERSIONS UI (8 pages):
✅ Remplacement de tous les composants Shadcn/UI par PrimeReact
- Card, Button, Input, Textarea, Badge → Card, Button, InputText, InputTextarea, Tag
- Conversion de toutes les icônes lucide-react en primeicons

Pages converties:
- app/(main)/aide/page.tsx
- app/(main)/aide/documentation/page.tsx
- app/(main)/aide/tutoriels/page.tsx
- app/(main)/aide/support/page.tsx
- app/(main)/messages/page.tsx
- app/(main)/messages/nouveau/page.tsx
- app/(main)/messages/envoyes/page.tsx
- app/(main)/messages/archives/page.tsx

CORRECTIONS BUILD:
✅ Résolution des conflits de dépendances FullCalendar
- @fullcalendar/core: 6.1.4 → ^6.1.19
- Alignement avec daygrid, timegrid, interaction, react

✅ Correction des erreurs TypeScript
- DataTable: Ajout de selectionMode="multiple"
- InputText number: Conversion number → string avec .toString()

✅ Correction des services API (3 fichiers)
- fournisseurService.ts
- notificationService.ts
- userService.ts
- Remplacement des appels apiService.get() par axios direct
- Ajout du préfixe /api/v1/ à tous les endpoints
- Configuration d'interceptors pour authentication tokens

RÉSULTAT:
✅ Build réussi: 126 pages générées
✅ 0 erreurs de compilation
✅ 0 erreurs TypeScript
✅ Architecture cohérente avec PrimeReact

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/(main)/messages/archives/page.tsx

@@ -1,10 +1,9 @@
 "use client";
 
 import React, { useState } from "react";
-import { Card } from "@/components/ui/card";
-import { Button } from "@/components/ui/button";
-import { Input } from "@/components/ui/input";
-import { Archive, Search, Mail, Send, RotateCcw, Trash2, MoreVertical } from "lucide-react";
+import { Card } from "primereact/card";
+import { Button } from "primereact/button";
+import { InputText } from "primereact/inputtext";
 import Link from "next/link";
 
 /**
@@ -72,7 +71,7 @@ export default function MessagesArchivesPage() {
         </div>
         <Link href="/messages/nouveau">
           <Button className="bg-blue-600 hover:bg-blue-700">
-            <Send className="mr-2 h-4 w-4" />
+            <i className="pi pi-send mr-2"></i>
             Nouveau message
           </Button>
         </Link>
@@ -80,35 +79,35 @@ export default function MessagesArchivesPage() {
 
       <div className="flex gap-2">
         <Link href="/messages">
-          <Button variant="outline">
-            <Mail className="mr-2 h-4 w-4" />
+          <Button outlined>
+            <i className="pi pi-envelope mr-2"></i>
             Reçus
           </Button>
         </Link>
         <Link href="/messages/envoyes">
-          <Button variant="outline">
-            <Send className="mr-2 h-4 w-4" />
+          <Button outlined>
+            <i className="pi pi-send mr-2"></i>
             Envoyés
           </Button>
         </Link>
         <Link href="/messages/archives">
-          <Button variant="default" className="bg-blue-600">
-            <Archive className="mr-2 h-4 w-4" />
+          <Button className="bg-blue-600">
+            <i className="pi pi-inbox mr-2"></i>
             Archives
           </Button>
         </Link>
       </div>
 
       <Card className="p-4">
-        <div className="relative">
-          <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-gray-400" />
-          <Input
+        <span className="p-input-icon-left w-full">
+          <i className="pi pi-search" />
+          <InputText
             placeholder="Rechercher dans les archives..."
-            className="pl-10"
+            className="w-full"
             value={searchTerm}
             onChange={(e) => setSearchTerm(e.target.value)}
           />
-        </div>
+        </span>
       </Card>
 
       <Card>
@@ -136,20 +135,20 @@ export default function MessagesArchivesPage() {
                       </div>
                       <div className="flex items-center gap-2 flex-shrink-0">
                         <Button
-                          variant="outline"
-                          size="sm"
+                          outlined
+                          size="small"
                           onClick={() => handleRestore(message.id)}
                         >
-                          <RotateCcw className="h-4 w-4 mr-2" />
+                          <i className="pi pi-replay mr-2"></i>
                           Restaurer
                         </Button>
                         <Button
-                          variant="outline"
-                          size="sm"
+                          outlined
+                          size="small"
                           onClick={() => handleDelete(message.id)}
                           className="text-red-600 hover:text-red-700"
                         >
-                          <Trash2 className="h-4 w-4" />
+                          <i className="pi pi-trash"></i>
                         </Button>
                       </div>
                     </div>
@@ -159,7 +158,7 @@ export default function MessagesArchivesPage() {
             ))
           ) : (
             <div className="p-12 text-center">
-              <Archive className="h-12 w-12 text-gray-400 mx-auto mb-4" />
+              <i className="pi pi-inbox text-gray-400 mx-auto mb-4" style={{ fontSize: '3rem' }}></i>
               <p className="text-gray-500">Aucun message archivé</p>
             </div>
           )}
@@ -168,7 +167,7 @@ export default function MessagesArchivesPage() {
 
       <Card className="p-4 bg-blue-50 border-blue-200">
         <div className="flex items-start gap-3">
-          <Archive className="h-5 w-5 text-blue-600 flex-shrink-0 mt-0.5" />
+          <i className="pi pi-inbox text-blue-600 flex-shrink-0 mt-0.5" style={{ fontSize: '1.25rem' }}></i>
           <div className="flex-1">
             <h3 className="font-semibold text-blue-900">À propos des archives</h3>
             <p className="text-sm text-blue-700 mt-1">