feat: add prisma support, admin panel and auth

app/admin/categories/CategoryManager.tsx

@@ -0,0 +1,73 @@
+'use client';
+
+import React, { useState } from 'react';
+import CategoryForm from '../components/CategoryForm';
+import DeleteButton from '../components/DeleteButton';
+import { deleteCategory } from '../actions';
+
+interface CategoryManagerProps {
+  categories: any[];
+}
+
+export default function CategoryManager({ categories }: CategoryManagerProps) {
+  const [showForm, setShowForm] = useState(false);
+  const [editingCategory, setEditingCategory] = useState<any>(null);
+
+  const handleEdit = (category: any) => {
+    setEditingCategory(category);
+    setShowForm(true);
+  };
+
+  const handleClose = () => {
+    setShowForm(false);
+    setEditingCategory(null);
+  };
+
+  return (
+    <div className="admin-categories">
+      <div className="admin-page-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '2rem' }}>
+        <div>
+          <h1>Kategoriler</h1>
+          <p>Menü kategorilerini yönetin</p>
+        </div>
+        <button className="admin-btn" onClick={() => setShowForm(true)}>
+          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" style={{width: '16px'}}><line x1="12" y1="5" x2="12" y2="19" /><line x1="5" y1="12" x2="19" y2="12" /></svg>
+          Yeni Kategori
+        </button>
+      </div>
+
+      <div className="admin-card">
+        <table className="admin-table">
+          <thead>
+            <tr>
+              <th>Başlık</th>
+              <th>Harici ID</th>
+              <th>Ürün Sayısı</th>
+              <th>İşlemler</th>
+            </tr>
+          </thead>
+          <tbody>
+            {categories.map((cat) => (
+              <tr key={cat.id}>
+                <td style={{ fontWeight: 500, color: '#fff' }}>{cat.title}</td>
+                <td><code className="badge">{cat.externalId}</code></td>
+                <td>{cat._count?.items || 0} Ürün</td>
+                <td className="actions-cell">
+                  <button className="action-btn" onClick={() => handleEdit(cat)}>Düzenle</button>
+                  <DeleteButton onDelete={async () => { await deleteCategory(cat.id); }} />
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+
+      {showForm && (
+        <CategoryForm 
+          initialData={editingCategory} 
+          onClose={handleClose} 
+        />
+      )}
+    </div>
+  );
+}

app/admin/categories/page.tsx

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+import React from 'react';
+import { prisma } from '@/app/lib/prisma';
+import CategoryManager from './CategoryManager';
+
+export const dynamic = 'force-dynamic';
+
+export default async function AdminCategoriesPage() {
+  const categories = await prisma.category.findMany({
+    include: {
+      _count: {
+        select: { items: true }
+      }
+    },
+    orderBy: { createdAt: 'asc' }
+  });
+
+  return <CategoryManager categories={categories} />;
+}