feat(annotation): 添加标注任务的数据量统计功能

- 在前端表格中新增数据量和已标注列显示
- 添加标注完成百分比计算和提示功能
- 在后端schema中增加totalCount和annotatedCount字段
- 实现项目统计数据查询服务方法
- 集成前后端数据映射和接口响应更新

frontend/src/pages/DataAnnotation/Home/DataAnnotation.tsx

@@ -160,6 +160,30 @@ export default function DataAnnotation() {
       key: "datasetName",
       width: 180,
     },
+    {
+      title: "数据量",
+      dataIndex: "totalCount",
+      key: "totalCount",
+      width: 100,
+      align: "center" as const,
+    },
+    {
+      title: "已标注",
+      dataIndex: "annotatedCount",
+      key: "annotatedCount",
+      width: 100,
+      align: "center" as const,
+      render: (value: number, record: any) => {
+        const total = record.totalCount || 0;
+        const annotated = value || 0;
+        const percent = total > 0 ? Math.round((annotated / total) * 100) : 0;
+        return (
+          <span title={`${annotated}/${total} (${percent}%)`}>
+            {annotated}
+          </span>
+        );
+      },
+    },
     {
       title: "创建时间",
       dataIndex: "createdAt",

frontend/src/pages/DataAnnotation/annotation.const.tsx

@@ -48,6 +48,8 @@ export function mapAnnotationTask(task: any) {
     name: task.name,
     description: task.description || "",
     datasetName: task.datasetName || task.dataset_name || "-",
+    totalCount: task.totalCount ?? task.total_count ?? 0,
+    annotatedCount: task.annotatedCount ?? task.annotated_count ?? 0,
     createdAt: task.createdAt || task.created_at || "-",
     updatedAt: task.updatedAt || task.updated_at || "-",
     icon: <StickyNote />,

runtime/datamate-python/app/module/annotation/schema/mapping.py

@@ -49,6 +49,8 @@ class DatasetMappingResponse(BaseModel):
     template_id: Optional[str] = Field(None, alias="templateId", description="关联的模板ID")
     template: Optional['AnnotationTemplateResponse'] = Field(None, description="关联的标注模板详情")
     label_config: Optional[str] = Field(None, alias="labelConfig", description="实际使用的 Label Studio XML 配置")
+    total_count: int = Field(0, alias="totalCount", description="数据集总数据量")
+    annotated_count: int = Field(0, alias="annotatedCount", description="已标注数据量")
     created_at: datetime = Field(..., alias="createdAt", description="创建时间")
     updated_at: Optional[datetime] = Field(None, alias="updatedAt", description="更新时间")
     deleted_at: Optional[datetime] = Field(None, alias="deletedAt", description="删除时间")

runtime/datamate-python/app/module/annotation/service/mapping.py

@@ -7,11 +7,11 @@ from datetime import datetime
 import uuid
 
 from app.core.logging import get_logger
-from app.db.models import LabelingProject, AnnotationTemplate
-from app.db.models.dataset_management import Dataset
+from app.db.models import LabelingProject, AnnotationTemplate, AnnotationResult
+from app.db.models.dataset_management import Dataset, DatasetFiles
 from app.module.annotation.schema import (
-    DatasetMappingCreateRequest, 
-    DatasetMappingUpdateRequest, 
+    DatasetMappingCreateRequest,
+    DatasetMappingUpdateRequest,
     DatasetMappingResponse,
     AnnotationTemplateResponse
 )
@@ -33,6 +33,40 @@ class DatasetMappingService:
             Dataset,
             LabelingProject.dataset_id == Dataset.id
         )
+
+    async def _get_project_stats(
+        self,
+        project_id: str,
+        dataset_id: str
+    ) -> Tuple[int, int]:
+        """
+        获取项目的统计数据
+
+        Args:
+            project_id: 标注项目ID
+            dataset_id: 数据集ID
+
+        Returns:
+            (total_count, annotated_count) 元组
+        """
+        # 获取数据集总数据量（只统计 ACTIVE 状态的文件）
+        total_result = await self.db.execute(
+            select(func.count()).select_from(DatasetFiles).where(
+                DatasetFiles.dataset_id == dataset_id,
+                DatasetFiles.status == "ACTIVE",
+            )
+        )
+        total_count = int(total_result.scalar() or 0)
+
+        # 获取已标注数据量（统计不同的 file_id 数量）
+        annotated_result = await self.db.execute(
+            select(func.count(func.distinct(AnnotationResult.file_id))).where(
+                AnnotationResult.project_id == project_id
+            )
+        )
+        annotated_count = int(annotated_result.scalar() or 0)
+
+        return total_count, annotated_count
     
     async def _to_response_from_row(
         self,
@@ -68,6 +102,11 @@ class DatasetMappingService:
             template_response = await template_service.get_template(self.db, template_id)
             logger.debug(f"Included template details for template_id: {template_id}")
 
+        # 获取统计数据
+        total_count, annotated_count = await self._get_project_stats(
+            mapping.id, mapping.dataset_id
+        )
+
         response_data = {
             "id": mapping.id,
             "dataset_id": mapping.dataset_id,
@@ -78,6 +117,8 @@ class DatasetMappingService:
             "template_id": template_id,
             "template": template_response,
             "label_config": label_config,
+            "total_count": total_count,
+            "annotated_count": annotated_count,
             "created_at": mapping.created_at,
             "updated_at": mapping.updated_at,
             "deleted_at": mapping.deleted_at,
@@ -125,6 +166,13 @@ class DatasetMappingService:
             template_response = await template_service.get_template(self.db, template_id)
             logger.debug(f"Included template details for template_id: {template_id}")
 
+        # 获取统计数据
+        total_count, annotated_count = 0, 0
+        if dataset_id:
+            total_count, annotated_count = await self._get_project_stats(
+                mapping.id, dataset_id
+            )
+
         # Create response dict with all fields
         response_data = {
             "id": mapping.id,
@@ -136,6 +184,8 @@ class DatasetMappingService:
             "template_id": template_id,
             "template": template_response,
             "label_config": label_config,
+            "total_count": total_count,
+            "annotated_count": annotated_count,
             "created_at": mapping.created_at,
             "updated_at": mapping.updated_at,
             "deleted_at": mapping.deleted_at,