feat(auth) : redirect client users to /portal after login and extract ticket helpers composable

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

frontend/composables/useClientTicketHelpers.ts

@@ -0,0 +1,29 @@
+export function useClientTicketHelpers() {
+    function typeBadgeClass(type: string): string {
+        switch (type) {
+            case 'bug': return 'bg-red-500'
+            case 'improvement': return 'bg-blue-500'
+            default: return 'bg-neutral-500'
+        }
+    }
+
+    function statusBadgeClass(status: string): string {
+        switch (status) {
+            case 'new': return 'bg-blue-100 text-blue-700'
+            case 'in_progress': return 'bg-yellow-100 text-yellow-700'
+            case 'done': return 'bg-green-100 text-green-700'
+            case 'rejected': return 'bg-red-100 text-red-700'
+            default: return 'bg-neutral-100 text-neutral-700'
+        }
+    }
+
+    function formatDate(iso: string): string {
+        return new Date(iso).toLocaleDateString('fr-FR', {
+            day: 'numeric',
+            month: 'short',
+            year: 'numeric',
+        })
+    }
+
+    return { typeBadgeClass, statusBadgeClass, formatDate }
+}