feat: 现代化翻页组件 + 完整项目更新

- 新增 Pagination 通用组件：首页/上一页/页码/下一页/末页导航
- PickModal 和 SwapModal 集成分页功能，每页20项
- 搜索/筛选切换自动回到第1页
- 现代化CSS样式：hover浮起动效、主色高亮、移动端适配
- 新增 dashboard、admin 管理模板
- 菜系(cuisine)模型和迁移
- 构建脚本 build.py 支持 PyInstaller 打包
- 前端资源重新构建

backend/meals/migrations/0006_cuisine_dish_cuisine_fk.py

@@ -0,0 +1,29 @@
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    """Step 1: Create the Cuisine table (no changes to Dish yet)."""
+
+    dependencies = [
+        ('meals', '0005_dish_pinyin'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Cuisine',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=50, unique=True, verbose_name='菜系名称')),
+                ('description', models.CharField(blank=True, default='', max_length=200, verbose_name='描述')),
+                ('sort_order', models.IntegerField(default=0, help_text='数值越小越靠前', verbose_name='排序')),
+                ('is_active', models.BooleanField(default=True, verbose_name='启用')),
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='创建时间')),
+            ],
+            options={
+                'verbose_name': '菜系',
+                'verbose_name_plural': '菜系',
+                'ordering': ['sort_order', 'id'],
+            },
+        ),
+    ]

backend/meals/migrations/0007_seed_cuisines_and_update_dish.py

@@ -0,0 +1,93 @@
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+CUISINE_SEEDS = [
+    ('家常菜', 0),
+    ('本帮菜', 10),
+    ('江浙菜', 20),
+    ('川菜', 30),
+    ('粤菜', 40),
+    ('鲁菜', 50),
+    ('湘菜', 60),
+    ('西北菜', 70),
+    ('面点小吃', 80),
+]
+
+
+def seed_cuisines(apps, schema_editor):
+    """Create Cuisine rows and save dish->cuisine mapping to a temp table."""
+    Cuisine = apps.get_model('meals', 'Cuisine')
+
+    name_to_id = {}
+    for name, order in CUISINE_SEEDS:
+        obj, _ = Cuisine.objects.get_or_create(name=name, defaults={'sort_order': order})
+        name_to_id[name] = obj.pk
+
+    from django.db import connection
+    with connection.cursor() as cursor:
+        cursor.execute("SELECT id, cuisine FROM meals_dish WHERE cuisine IS NOT NULL AND cuisine != ''")
+        rows = cursor.fetchall()
+
+    for _, cuisine_name in rows:
+        if cuisine_name not in name_to_id:
+            obj, _ = Cuisine.objects.get_or_create(name=cuisine_name, defaults={'sort_order': 90})
+            name_to_id[cuisine_name] = obj.pk
+
+    with connection.cursor() as cursor:
+        cursor.execute("CREATE TABLE _temp_dish_cuisine (dish_id INTEGER, cuisine_id INTEGER)")
+        for dish_id, cuisine_name in rows:
+            cuisine_id = name_to_id.get(cuisine_name)
+            if cuisine_id:
+                cursor.execute(
+                    "INSERT INTO _temp_dish_cuisine (dish_id, cuisine_id) VALUES (%s, %s)",
+                    [dish_id, cuisine_id],
+                )
+
+
+def update_cuisine_fk(apps, schema_editor):
+    """Populate Dish.cuisine_id from the temp table, then clean up."""
+    from django.db import connection
+    with connection.cursor() as cursor:
+        cursor.execute(
+            "UPDATE meals_dish SET cuisine_id = "
+            "(SELECT cuisine_id FROM _temp_dish_cuisine "
+            "WHERE _temp_dish_cuisine.dish_id = meals_dish.id) "
+            "WHERE EXISTS (SELECT 1 FROM _temp_dish_cuisine "
+            "WHERE _temp_dish_cuisine.dish_id = meals_dish.id)"
+        )
+        cursor.execute("DROP TABLE _temp_dish_cuisine")
+
+
+def reverse_seed(apps, schema_editor):
+    """Reverse: clean up temp table and delete Cuisine rows."""
+    from django.db import connection
+    with connection.cursor() as cursor:
+        cursor.execute("DROP TABLE IF EXISTS _temp_dish_cuisine")
+    Cuisine = apps.get_model('meals', 'Cuisine')
+    Cuisine.objects.all().delete()
+
+
+class Migration(migrations.Migration):
+    """Step 2: Seed cuisines from existing data, then alter Dish.cuisine to FK."""
+
+    dependencies = [
+        ('meals', '0006_cuisine_dish_cuisine_fk'),
+    ]
+
+    operations = [
+        migrations.RunPython(seed_cuisines, reverse_seed),
+        migrations.AlterField(
+            model_name='dish',
+            name='cuisine',
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name='dishes',
+                to='meals.cuisine',
+                verbose_name='菜系',
+            ),
+        ),
+        migrations.RunPython(update_cuisine_fk, migrations.RunPython.noop),
+    ]

backend/meals/migrations/0008_alter_cuisine_id.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0.8 on 2026-08-27 06:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('meals', '0007_seed_cuisines_and_update_dish'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cuisine',
+            name='id',
+            field=models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+    ]