chore: 完成多批次代码优化与重构

- 重构工作流模块目录结构，迁移代码文件
- 修复类型断言空值安全问题，添加 ! 操作符
- 优化样式类名，替换 flex-cc 为标准 flex 工具类
- 更新路由标签简化文案，移除冗余注释
- 调整 ruff 配置，放宽行长度限制
- 更新 README 与多语言文案，优化项目描述
- 修复表单、图表组件的类型与样式问题
- 简化搜索表单、数据卡片的布局代码

backend/app/plugin/module_task/workflow/flows/schema.py

@@ -0,0 +1,131 @@
+import re
+from typing import Any
+
+from fastapi import Query
+from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
+
+from app.common.enums import QueueEnum
+from app.core.base_params import BaseQueryParam, TenantByQueryParam, UserByQueryParam
+from app.core.base_schema import TenantBySchema, UserBySchema
+from app.core.validator import DateTimeStr
+
+
+class WorkflowCreateSchema(BaseModel):
+    """创建工作流"""
+
+    name: str = Field(..., max_length=128, description="流程名称")
+    code: str = Field(..., max_length=64, description="流程编码")
+    description: str | None = Field(default=None, description="描述")
+    nodes: list | None = Field(default=None, description="Vue Flow nodes")
+    edges: list | None = Field(default=None, description="Vue Flow edges")
+
+    @field_validator("name")
+    @classmethod
+    def validate_name(cls, v: str) -> str:
+        v = v.strip()
+        if len(v) < 1 or len(v) > 128:
+            raise ValueError("流程名称长度必须在1-128个字符之间")
+        return v
+
+    @field_validator("code")
+    @classmethod
+    def validate_code(cls, v: str) -> str:
+        v = v.strip()
+        if len(v) < 2 or len(v) > 64:
+            raise ValueError("流程编码长度必须在2-64个字符之间")
+        if not re.match(r"^[A-Za-z][A-Za-z0-9_]*$", v):
+            raise ValueError("流程编码必须以字母开头，仅允许字母、数字、下划线")
+        return v
+
+
+class WorkflowUpdateSchema(WorkflowCreateSchema):
+    """更新工作流"""
+
+    workflow_status: str | None = Field(default=None, max_length=32, description="draft/published/archived")
+
+    @field_validator("workflow_status")
+    @classmethod
+    def validate_workflow_status(cls, v: str | None) -> str | None:
+        if v is None:
+            return v
+        allowed = {"draft", "published", "archived"}
+        v = v.strip()
+        if v not in allowed:
+            raise ValueError(f"流程状态必须为 {allowed}")
+        return v
+
+
+class WorkflowOutSchema(UserBySchema, TenantBySchema):
+    """工作流输出（status 表示流程状态 draft/published/archived，与 ModelMixin.status 区分）"""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int | None = Field(default=None, description="主键ID")
+    uuid: str | None = Field(default=None, description="UUID")
+    description: str | None = Field(default=None, description="描述")
+    created_time: DateTimeStr | None = Field(default=None, description="创建时间")
+    updated_time: DateTimeStr | None = Field(default=None, description="更新时间")
+    name: str = Field(description="流程名称")
+    code: str = Field(description="流程编码")
+    status: str = Field(description="流程状态 draft/published/archived")
+    nodes: list | None = Field(default=None, description="节点")
+    edges: list | None = Field(default=None, description="连线")
+
+    @model_validator(mode="before")
+    @classmethod
+    def _map_workflow_status(cls, data: Any) -> Any:
+        from .model import WorkflowModel
+
+        if isinstance(data, WorkflowModel):
+            return {
+                "id": data.id,
+                "uuid": data.uuid,
+                "description": data.description,
+                "created_time": data.created_time,
+                "updated_time": data.updated_time,
+                "created_id": data.created_id,
+                "updated_id": data.updated_id,
+                "name": data.name,
+                "code": data.code,
+                "status": data.workflow_status,
+                "nodes": data.nodes,
+                "edges": data.edges,
+            }
+        return data
+
+
+class WorkflowQueryParam(BaseQueryParam, UserByQueryParam, TenantByQueryParam):
+    """工作流查询"""
+
+    def __init__(
+        self,
+        name: str | None = Query(None, description="流程名称"),
+        code: str | None = Query(None, description="流程编码"),
+        *args,
+        **kwargs,
+    ) -> None:
+        super().__init__(*args, **kwargs)
+        self.name = (QueueEnum.like.value, name) if name else None
+        self.code = (QueueEnum.like.value, code) if code else None
+
+
+class WorkflowExecuteSchema(BaseModel):
+    """执行工作流"""
+
+    workflow_id: int = Field(..., description="工作流ID")
+    variables: dict | None = Field(default=None, description="注入到各节点的 variables 上下文")
+    business_key: str | None = Field(default=None, description="业务键")
+    job_id: int | None = Field(default=None, description="关联任务ID")
+
+
+class WorkflowExecuteResultSchema(BaseModel):
+    """执行结果"""
+
+    workflow_id: int
+    workflow_name: str
+    status: str = Field(description="completed/failed")
+    start_time: str | None = None
+    end_time: str | None = None
+    variables: dict | None = None
+    node_results: dict | None = None
+    error: str | None = None