feat(pl): add Excel export for vehicle maintenance apply list

Support filtered and selected rows via backend export and ListExportDropdown.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/pl/vehicle_maintenance.py

@@ -1,13 +1,22 @@
 """车辆维保 API"""
 from datetime import date
-from typing import Optional
+from datetime import datetime
+from typing import List, Optional
 
-from fastapi import APIRouter, Depends, Query, status
+from pydantic import BaseModel, Field
+from fastapi import APIRouter, Depends, HTTPException, Query, status
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.core.db_auth import DbUserContext, get_db_current_user
 from app.core.tenant_context import get_tenant_no
+from app.utils.excel_export import (
+    EXPORT_MAX_ROWS,
+    ExportColumn,
+    ExportValidationError,
+    export_rows_to_xlsx_response,
+    filter_export_columns,
+)
 from app.schemas.pl.vehicle_maintenance import (
     VehicleMaintenanceApplyCreate,
     VehicleMaintenanceApplyListResponse,
@@ -74,6 +83,76 @@ def list_reminders(
     )
 
 
+
+MAINT_APPLY_EXPORT_COLUMNS = [
+    ExportColumn(title="申请单号", field="applyNo"),
+    ExportColumn(title="车牌号", field="licensePlate"),
+    ExportColumn(title="维保类型", field="maintenanceType"),
+    ExportColumn(title="申请日期", field="applyDate"),
+    ExportColumn(title="开始日期", field="startDate"),
+    ExportColumn(title="预计取车", field="expectedPickupDate"),
+    ExportColumn(title="申请人", field="applicantName"),
+    ExportColumn(title="状态", field="status"),
+    ExportColumn(title="创建时间", field="createTime"),
+]
+
+
+class MaintenanceApplyExportBody(BaseModel):
+    q: Optional[str] = None
+    maintenance_type: Optional[str] = Field(default=None, alias="maintenanceType")
+    status: Optional[str] = None
+    apply_date_from: Optional[date] = Field(default=None, alias="applyDateFrom")
+    apply_date_to: Optional[date] = Field(default=None, alias="applyDateTo")
+    ids: Optional[List[str]] = None
+    columns: Optional[List[str]] = None
+
+    model_config = {"populate_by_name": True}
+
+
+@apply_router.post("/export")
+def export_applies(
+    body: MaintenanceApplyExportBody,
+    db: Session = Depends(get_db),
+    user: DbUserContext = Depends(get_db_current_user),
+):
+    """导出维保申请列表（当前筛选全量，或 ids 已选）。"""
+    try:
+        tenant_no = get_tenant_no(db, user.to_tenant_user_dict())
+        items, _ = svc.list_applies(
+            db,
+            tenant_no,
+            user,
+            q=body.q,
+            maintenance_type=body.maintenance_type,
+            status=body.status,
+            apply_date_from=body.apply_date_from,
+            apply_date_to=body.apply_date_to,
+            ids=body.ids,
+            page=1,
+            page_size=EXPORT_MAX_ROWS,
+            max_page_size=EXPORT_MAX_ROWS,
+        )
+        rows = []
+        for item in items:
+            data = item.model_dump(by_alias=True)
+            for k in ("applyDate", "startDate", "expectedPickupDate", "createTime"):
+                if data.get(k) is not None:
+                    data[k] = str(data[k])[:19]
+            rows.append(data)
+        cols = filter_export_columns(MAINT_APPLY_EXPORT_COLUMNS, body.columns)
+        date_str = datetime.now().strftime("%Y%m%d")
+        return export_rows_to_xlsx_response(
+            db,
+            tenant_no=tenant_no,
+            sheet_title="维保申请",
+            columns=cols,
+            rows=rows,
+            filename_stem=f"维保申请_{date_str}",
+        )
+    except ExportValidationError as e:
+        raise HTTPException(status_code=400, detail=str(e)) from e
+
+
 @apply_router.get("/{id}", response_model=VehicleMaintenanceApplyRead)
 def get_apply(
     id: str,