Perform a restore from recent backup

I am doing a backup with:

`influx backup "$INFLUX_BACKUP_PATH" -t="$INFLUX_ROOT_TOKEN"`

The backup is performed. When I try to backup:

```
pablo@pablo-MII-V:/dev/shm$ sudo influx restore /dev/shm/influxdb_backup --token ""$INFLUX_ROOT_TOKEN""
2025/01/21 21:10:23 INFO: Restoring bucket "196e269b74ba658d" as "cpe_periodic_reports"
Error: failed to restore bucket "cpe_periodic_reports": 422 Unprocessable Entity: bucket with name cpe_periodic_reports already exists
```
If I delete the bucket:

```
pablo@pablo-MII-V:/dev/shm$ sudo influx restore /dev/shm/influxdb_backup --token ""$INFLUX_ROOT_TOKEN""
2025/01/21 21:24:08 INFO: Restoring bucket "196e269b74ba658d" as "cpe_periodic_reports"
Error: failed to restore bucket "cpe_periodic_reports": 401 Unauthorized: read:authorizations is unauthorized
```

Finally with the --new-bucket flag:

```
pablo@pablo-MII-V:/dev/shm$ sudo influx restore /dev/shm/influxdb_backup --new-bucket --token "uLdH_rC1K5EpO6eFmGHRhBzRTdI4t8oBWHqFDxyIOsrN9-RG_lfHYJR_vTb4oR6o1u9KbK57-iR4siVq_jBleA=="
Error: --bucket-id or --bucket must be set to use --new-bucket

```
Its obvious but anyway I will clarify that there are more than just 1 bucket in the backup, so I don't understand why always a bucket is referred when the backup was performed generally.

It will be great to understand which kind of madness is this.

Thanks in advance.

Pablo.

Start by reproducing the `influx backup` and `influx restore` commands shown in the issue, including the existing-bucket, deleted-bucket, and `--new-bucket` cases. Trace how restore selects buckets and handles the reported 422, 401, and flag-validation errors. Done means the multi-bucket restore behavior and required authorization or flags are clearly corrected or documented.

Written by the indexing model from the issue text.