fix(project): identify storage and donation assignments by sample codes

Replace order number columns with batched sample codes and support sample keyword searches without duplicating parent records. Preserve tenant and soft-delete boundaries, existing assignment writes and preview identifiers.

Related to issue #13. Independent static review completed; tests authored but not run under user self-test arrangement.

web-admin/src/api/project-management.ts

@@ -32,6 +32,7 @@ export interface AssignmentRecord {
   teamId: string | null
   teamName: string | null
   createTime: string | null
+  sampleCodes?: string
   motherName?: string
   motherPhone?: string
   hospitalName?: string