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/views.py

@@ -8,13 +8,14 @@ from openpyxl.utils import get_column_letter
 from rest_framework import status, viewsets
 from rest_framework.decorators import api_view, permission_classes
 from rest_framework.permissions import IsAdminUser
+from rest_framework.permissions import AllowAny
 from rest_framework.response import Response
 
-from .models import Dish
-from .serializers import DishSerializer
+from .models import Cuisine, Dish
+from .serializers import DishSerializer, CuisineSerializer
 
 WEEKDAYS = ['周一', '周二', '周三', '周四', '周五']
-SCHOOL_NAME = '上海外国语大学附属宝山双语学校'
+SCHOOL_NAME = '学校菜单'
 
 COLOR_HEADER = PatternFill('solid', fgColor='2F5597')
 COLOR_DAY = PatternFill('solid', fgColor='D9E2F3')
@@ -27,9 +28,16 @@ BORDER = Border(left=THIN, right=THIN, top=THIN, bottom=THIN)
 CENTER = Alignment(horizontal='center', vertical='center', wrap_text=True)
 
 
+class CuisineViewSet(viewsets.ModelViewSet):
+    queryset = Cuisine.objects.all()
+    serializer_class = CuisineSerializer
+    permission_classes = [AllowAny]
+
+
 class DishViewSet(viewsets.ModelViewSet):
     queryset = Dish.objects.all()
     serializer_class = DishSerializer
+    permission_classes = [AllowAny]
 
     def get_queryset(self):
         qs = Dish.objects.all()
@@ -59,9 +67,14 @@ def bulk_create_dishes(request):
         if not name or dish_type not in ('meat', 'veg', 'soup', 'staple'):
             skipped.append(name or '未命名')
             continue
+        # Resolve cuisine FK by name
+        cuisine_name = str(raw.get('cuisine', '') or '').strip()
+        cuisine_obj = None
+        if cuisine_name:
+            cuisine_obj, _ = Cuisine.objects.get_or_create(name=cuisine_name)
         defaults = {
             'dish_type': dish_type,
-            'cuisine': str(raw.get('cuisine', '家常菜') or '家常菜'),
+            'cuisine': cuisine_obj,
             'ingredient_detail': str(raw.get('ingredient_detail', '') or raw.get('ingredient', '')),
             'protein': float(raw.get('protein', 0) or 0),
             'fat': float(raw.get('fat', 0) or 0),
@@ -94,7 +107,7 @@ def _pop_next(pool, shuffle_src):
 def _serialize_dish(d):
     return {
         'id': d.id, 'name': d.name, 'ingredient': d.ingredient_detail, 'dish_type': d.dish_type,
-        'cuisine': d.cuisine, 'protein': float(d.protein), 'fat': float(d.fat), 'calorie': d.calorie,
+        'cuisine': d.cuisine_name, 'protein': float(d.protein), 'fat': float(d.fat), 'calorie': d.calorie,
     }
 
 
@@ -211,19 +224,19 @@ def generate_week_menu(payload, menu_key='a'):
 
         week.append({
             'day': day,
-            'meats': [{'id': d.id, 'name': d.name, 'ingredient': d.ingredient_detail, 'dish_type': d.dish_type, 'cuisine': d.cuisine,
+            'meats': [{'id': d.id, 'name': d.name, 'ingredient': d.ingredient_detail, 'dish_type': d.dish_type, 'cuisine': d.cuisine_name,
                        'protein': float(d.protein), 'fat': float(d.fat), 'calorie': d.calorie} for d in day_meat_list],
-            'vegs': [{'id': d.id, 'name': d.name, 'ingredient': d.ingredient_detail, 'dish_type': d.dish_type, 'cuisine': d.cuisine,
+            'vegs': [{'id': d.id, 'name': d.name, 'ingredient': d.ingredient_detail, 'dish_type': d.dish_type, 'cuisine': d.cuisine_name,
                       'protein': float(d.protein), 'fat': float(d.fat), 'calorie': d.calorie} for d in day_veg],
-            'soup': {'id': soup.id, 'name': soup.name, 'ingredient': soup.ingredient_detail, 'dish_type': soup.dish_type, 'cuisine': soup.cuisine,
+            'soup': {'id': soup.id, 'name': soup.name, 'ingredient': soup.ingredient_detail, 'dish_type': soup.dish_type, 'cuisine': soup.cuisine_name,
                      'protein': float(soup.protein), 'fat': float(soup.fat), 'calorie': soup.calorie} if soup else None,
-            'staple': {'id': staple.id, 'name': staple.name, 'ingredient': staple.ingredient_detail, 'dish_type': staple.dish_type, 'cuisine': staple.cuisine,
+            'staple': {'id': staple.id, 'name': staple.name, 'ingredient': staple.ingredient_detail, 'dish_type': staple.dish_type, 'cuisine': staple.cuisine_name,
                        'protein': float(staple.protein), 'fat': float(staple.fat), 'calorie': staple.calorie} if staple else None,
         })
     return week
 
 
-def build_menu_title(label, school_name=None, week_no=None):
+def build_menu_title(label, school_name=None, week_no=None, date_start=None, date_end=None):
     school_name = school_name or SCHOOL_NAME
     iso = date.today().isocalendar()
     try:
@@ -232,12 +245,16 @@ def build_menu_title(label, school_name=None, week_no=None):
         week_no = iso.week
     if not 1 <= week_no <= 53:
         week_no = iso.week
-    try:
-        monday = date.fromisocalendar(iso.year, week_no, 1)
-    except ValueError:
-        monday = date.today() - timedelta(days=date.today().weekday())
-    friday = monday + timedelta(days=4)
-    date_range = f'{monday.month}.{monday.day}--{friday.month}.{friday.day}'
+    # Use custom dates if provided, otherwise compute from week number
+    if date_start and date_end:
+        date_range = f'{date_start}--{date_end}'
+    else:
+        try:
+            monday = date.fromisocalendar(iso.year, week_no, 1)
+        except ValueError:
+            monday = date.today() - timedelta(days=date.today().weekday())
+        friday = monday + timedelta(days=4)
+        date_range = f'{monday.month}.{monday.day}--{friday.month}.{friday.day}'
     return f'{school_name}[第{week_no}周]{date_range}营养{label}菜单'
 
 
@@ -246,11 +263,13 @@ def generate_menu(request):
     data = request.data
     school = data.get('school_name') or SCHOOL_NAME
     week_no = data.get('week_no')
+    date_start = data.get('date_start')
+    date_end = data.get('date_end')
     menus = {}
     for label in ('A', 'B'):
         key = label.lower()
         menus[key] = {
-            'title': build_menu_title(label, school, week_no),
+            'title': build_menu_title(label, school, week_no, date_start, date_end),
             'week': generate_week_menu(data, menu_key=key),
         }
     return Response(menus)