Create new cluster using plugin configuration but always get this error in replica pod.

{"level":"error","ts":"2025-08-08T02:41:53.322975793Z","msg":"Error while handling GRPC request","logging_pod":"cluster-example-1","info":{"Server":{"Client":{"Client":{}},"InstanceName":"cluster-example-1","SpoolDirectory":"/controller/wal-restore-spool","PGDataPath":"/var/lib/postgresql/data/pgdata","PGWALPath":"/var/lib/postgresql/data/pgdata/pg_wal"},"FullMethod":"/cnpgi.wal.v1.WAL/Restore"},"error":"WAL file not found","stacktrace":"github.com/cloudnative-pg/machinery/pkg/log.(*logger).Error\n\t/go/pkg/mod/github.com/cloudnative-pg/machinery@v0.2.0/pkg/log/log.go:125\ngithub.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/http.(*Server).Start.logFailedRequestsUnaryServerInterceptor.func2\n\t/go/pkg/mod/github.com/cloudnative-pg/cnpg-i-machinery@v0.3.0/pkg/pluginhelper/http/grpc.go:51\ngoogle.golang.org/grpc.NewServer.chainUnaryServerInterceptors.chainUnaryInterceptors.func1\n\t/go/pkg/mod/google.golang.org/grpc@v1.72.2/server.go:1208\ngithub.com/cloudnative-pg/cnpg-i/pkg/wal._WAL_Restore_Handler\n\t/go/pkg/mod/github.com/cloudnative-pg/cnpg-i@v0.2.1/pkg/wal/wal_grpc.pb.go:214\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc@v1.72.2/server.go:1405\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc@v1.72.2/server.go:1815\ngoogle.golang.org/grpc.(*Server).serveStreams.func2.1\n\t/go/pkg/mod/google.golang.org/grpc@v1.72.2/server.go:1035"}

Start at the WAL Restore gRPC entry point and inspect how the plugin configuration maps to /controller/wal-restore-spool and the replica's PostgreSQL data paths. Reproduce the cluster creation, trace why the requested WAL file is absent, and verify that replica recovery completes without the error.

索引モデルが issue の本文から書いたものです。