feat(pl): show product and plan type columns on contract completion list

Align the合同完善 table with运输计划 by returning products/planType from contract-gaps and rendering them via PlPlanListProductCell.

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

web-admin/src/api/pl/index.ts

@@ -658,6 +658,7 @@ export interface PlanContractGapItem {
   id: string
   planNo: string
   planDate?: string
+  planType?: string
   followStatus: string
   supplierId?: string
   supplierName?: string
@@ -668,6 +669,7 @@ export interface PlanContractGapItem {
   demanderContractExempt: boolean
   supplierContracts: PlanContractLink[]
   demanderContracts: PlanContractLink[]
+  products?: PlanProduct[]
 }
 
 export interface PlanContractGapQuery {