营养校准、后台美化、静态走对象存储 CDN、标题可编辑、admin 拼音搜索

- 菜品营养按食物成分表+烹饪方式校准（calibrate_nutrition 命令）
- 后台接入 jazzmin 主题美化，移除 Google Fonts（模板覆盖）
- 前端/后台静态资源指向 qnycdn 对象存储 CDN（vite base + DJANGO_STATIC_URL）
- 菜单标题学校名称/周数可编辑，日期随周数计算
- admin 搜索支持拼音首字母/全拼（Dish.pinyin 索引，pypinyin）
- Dockerfile 使用清华 pip 镜像源

backend/meals/admin.py

@@ -1,4 +1,5 @@
 from django.contrib import admin
+from django.utils.html import format_html, mark_safe
 
 from .models import Dish
 
@@ -15,10 +16,10 @@ def deactivate_dishes(modeladmin, request, queryset):
 
 @admin.register(Dish)
 class DishAdmin(admin.ModelAdmin):
-    list_display = ('name', 'cuisine', 'dish_type', 'ingredient_detail', 'protein', 'fat', 'calorie', 'is_active', 'created_at')
+    list_display = ('name', 'cuisine', 'dish_type_display', 'ingredient_detail', 'protein', 'fat', 'calorie', 'nutri_badge', 'is_active', 'created_at')
     list_filter = ('dish_type', 'cuisine', 'is_active')
-    search_fields = ('name', 'ingredient_detail', 'cuisine')
-    list_editable = ('cuisine', 'dish_type', 'ingredient_detail', 'protein', 'fat', 'calorie', 'is_active')
+    search_fields = ('name', 'ingredient_detail', 'cuisine', 'pinyin')
+    list_editable = ('cuisine', 'ingredient_detail', 'protein', 'fat', 'calorie', 'is_active')
     list_per_page = 50
     actions = [activate_dishes, deactivate_dishes]
     fieldsets = (
@@ -26,3 +27,30 @@ class DishAdmin(admin.ModelAdmin):
         ('营养信息', {'fields': ('ingredient_detail', 'protein', 'fat', 'calorie')}),
         ('其他', {'fields': ('description',), 'classes': ('collapse',)}),
     )
+
+    @admin.display(description='营养提示', ordering='calorie')
+    def nutri_badge(self, obj):
+        badges = []
+        if obj.dish_type == 'meat' and obj.fat >= 20:
+            badges.append('<span class="badge badge-danger">高脂</span>')
+        if obj.dish_type == 'meat' and obj.calorie >= 300:
+            badges.append('<span class="badge badge-warning">高热量</span>')
+        if obj.dish_type in ('meat', 'veg') and obj.protein >= 15:
+            badges.append('<span class="badge badge-success">高蛋白</span>')
+        if obj.dish_type == 'veg' and obj.fat <= 3 and obj.calorie <= 60:
+            badges.append('<span class="badge badge-info">清淡</span>')
+        return mark_safe('&nbsp;'.join(badges)) if badges else '—'
+
+    @admin.display(description='类型')
+    def dish_type_display(self, obj):
+        colors = {'meat': '#d9534f', 'veg': '#5cb85c', 'soup': '#5bc0de', 'staple': '#f0ad4e'}
+        return format_html(
+            '<span style="color:{};font-weight:600">{}</span>',
+            colors.get(obj.dish_type, '#999'),
+            dict(Dish.TYPE_CHOICES).get(obj.dish_type, obj.dish_type),
+        )
+
+
+admin.site.site_header = '学校订餐菜单管理系统'
+admin.site.site_title = '学校订餐菜单管理'
+admin.site.index_title = '菜单管理后台'