refactor(django): 补充应用外壳层中文注释

apps/audit/admin.py

@@ -5,6 +5,7 @@ from .models import AgentAuditLog, DemoBusinessRecord
 
 @admin.register(AgentAuditLog)
 class AgentAuditLogAdmin(admin.ModelAdmin):
+    """便于在 Django Admin 中快速查看一次 Agent 执行的关键信息。"""
     list_display = ("id", "scenario_name", "status", "model_name", "latency_ms", "created_at")
     list_filter = ("status", "scenario_id")
     search_fields = ("scenario_id", "scenario_name", "user_input", "final_answer")
@@ -12,6 +13,7 @@ class AgentAuditLogAdmin(admin.ModelAdmin):
 
 @admin.register(DemoBusinessRecord)
 class DemoBusinessRecordAdmin(admin.ModelAdmin):
+    """管理工具查询依赖的示例业务记录。"""
     list_display = ("id", "title", "scenario_id", "record_type", "created_at")
     list_filter = ("scenario_id", "record_type")
     search_fields = ("title", "scenario_id", "record_type")