Add Phase 11B client aware multi bank ownership and engagement archive

app/modules/accounting/bank_service.py

@@ -79,6 +79,13 @@ def import_completed_job(db, *, tenant_id, client_id, job_id, user_id):
         raise ValueError("Completed Bank Analyzer workbook was not found.")
     if job.tenant_id not in (None, tenant_id):
         raise ValueError("Bank Analyzer job belongs to a different firm.")
+    if getattr(job, "client_id", None) and int(job.client_id) != int(client_id):
+        raise ValueError(
+            "This Bank Analyzer job is already bound to a different ERP client. "
+            "Import it using the client confirmed during statement ownership validation."
+        )
+    if getattr(job, "client_id", None) and getattr(job, "ownership_status", "") != "confirmed":
+        raise ValueError("Client-bound Bank Analyzer job has not passed ownership validation.")
 
     frame = pd.read_excel(job.output_file, sheet_name="Transaction Classification")
     tally_options = available_tally_guids(db, tenant_id, client_id)