feat: 新增票据夹模块并优化 OCR 与员工画像服务

后端新增票据夹端点、数据模型和服务模块，优化 OCR 端点
Schema 和附件操作逻辑，完善员工行为画像服务和辅助函数，
前端新增票据夹视图和服务层，优化文档中心样式和侧边栏导
航，完善员工画像详情弹窗和权限控制，补充单元测试。

server/src/app/services/expense_claim_attachment_operations.py

@@ -108,6 +108,7 @@ from app.services.expense_rule_runtime import (
     resolve_document_type_label,
 )
 from app.services.ocr import OcrService
+from app.services.receipt_folder import ReceiptFolderService
 
 
 class ExpenseClaimAttachmentOperationsMixin:
@@ -120,6 +121,7 @@ class ExpenseClaimAttachmentOperationsMixin:
         content: bytes,
         media_type: str | None,
         current_user: CurrentUserContext,
+        source_receipt_id: str = "",
     ) -> dict[str, Any] | None:
         claim, item = self._get_claim_item_or_raise(
             claim_id=claim_id,
@@ -240,6 +242,16 @@ class ExpenseClaimAttachmentOperationsMixin:
             "ocr_warnings": [str(item) for item in getattr(ocr_document, "warnings", []) or []],
         }
         self._attachment_storage.write_meta(file_path, meta)
+        ReceiptFolderService().save_linked_attachment(
+            file_path=file_path,
+            media_type=resolved_media_type,
+            document=ocr_document,
+            current_user=current_user,
+            claim_id=claim.id,
+            claim_no=claim.claim_no,
+            item_id=item.id,
+            source_receipt_id=source_receipt_id,
+        )
 
         self._sync_claim_from_items(claim)
         self.db.commit()