refactor: consolidate finance workflow modules

server/src/app/services/expense_claim_platform_risk.py

@@ -13,6 +13,7 @@ from app.services.agent_asset_spreadsheet import RISK_RULES_LIBRARY
 from app.services.budget import BudgetService
 from app.services.expense_claim_platform_context_tools import (
     collect_attachment_cities,
+    collect_context_item_ids,
     collect_invoice_keys_from_contexts,
     collect_invoice_keys_from_document_info,
     count_values,
@@ -768,15 +769,7 @@ class ExpenseClaimPlatformRiskMixin:
 
     @staticmethod
     def _context_item_ids(contexts: list[dict[str, Any]]) -> list[str]:
-        item_ids: list[str] = []
-        seen: set[str] = set()
-        for context in list(contexts or []):
-            item = context.get("item") if isinstance(context, dict) else None
-            item_id = str(getattr(item, "id", "") or "").strip()
-            if item_id and item_id not in seen:
-                seen.add(item_id)
-                item_ids.append(item_id)
-        return item_ids
+        return collect_context_item_ids(contexts)
 
     @staticmethod
     def _with_related_item_ids(flag: dict[str, Any], item_ids: list[str]) -> dict[str, Any]: