chore: 将后端移动到 api/ 目录，准备合并为单仓库

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

api/task/tutorial.py

@@ -0,0 +1,65 @@
+from typing import List
+from ninja import Router
+from django.shortcuts import get_object_or_404
+from account.decorators import super_required
+from .schemas import TutorialAll, TutorialIn, TutorialSlim
+from .models import Tutorial
+
+router = Router()
+
+
+@router.get("/list", response=List[TutorialSlim])
+@super_required
+def tutorial(request):
+    """
+    后台显示所有的列表
+    """
+    return Tutorial.objects.all()
+
+
+@router.get("/display", response=List[int])
+def get_all_public_display(request):
+    """
+    前台显示所有公开的 display
+    """
+    return Tutorial.objects.filter(is_public=True).values_list("display", flat=True)
+
+
+@router.get("/{display}", response=TutorialAll)
+def get(request, display: int):
+    return get_object_or_404(Tutorial, display=display)
+
+
+@router.post("/")
+@super_required
+def create_or_update(request, payload: TutorialIn):
+    try:
+        item = Tutorial.objects.get(display=payload.display)
+        item.title = payload.title
+        item.content = payload.content
+        item.is_public = payload.is_public
+        item.example_html = payload.example_html
+        item.example_css = payload.example_css
+        item.example_js = payload.example_js
+        item.save()
+        return {"message": "更新成功"}
+    except Tutorial.DoesNotExist:
+        Tutorial.objects.create(**payload.dict())
+        return {"message": "创建成功"}
+
+
+@router.put("/public/{display}")
+@super_required
+def toggle_public(request, display: int):
+    item = get_object_or_404(Tutorial, display=display)
+    item.is_public = not item.is_public
+    item.save()
+    label = "公开" if item.is_public else "隐藏"
+    return {"message": f"【{item.display}】{item.title} 已{label}"}
+
+
+@router.delete("/{display}")
+@super_required
+def remove(request, display: int):
+    Tutorial.objects.filter(display=display).delete()
+    return {"message": "删除成功"}