chore: 基线提交（重构前快照）

重构前保存现有 apps/ 结构基线，供后续各阶段回滚。

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

apps/forms/dict_item.py

@@ -0,0 +1,17 @@
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+# 字典项表单验证
+class DictItemForm(BaseModel):
+    id: Optional[int] = Field(None, description="字典项ID")
+    name: str = Field(..., min_length=1, max_length=150, description="字典项名称")
+    value: str = Field(..., min_length=1, max_length=150, description="字典项值")
+    dict_id: int = Field(..., ge=0, description="字典ID")
+    note: Optional[str] = Field(None, max_length=255, description="字典项备注")
+    sort: int = Field(..., ge=0, le=99999, description="字典项排序")
+
+# 设置状态表单
+class DictItemStatusForm(BaseModel):
+    id: int = Field(..., gt=0, description="字典项ID")
+    status: int = Field(..., ge=1, le=2, description="字典项状态")