feat(backup): surface incrementalBaseBackupId on backup status and list

[OsamaAnsar]

Summary

Closes #441.

Exposes incrementalBaseBackupId on BackupStatusReturn — the ID of the base backup a file-based incremental backup was built on (empty/absent when the backup is not incremental). Mirrors weaviate-python-client#2116.

The field is already in the vendored OpenAPI spec (incremental_base_backup_id on BackupCreateStatusResponse and BackupListResponse); it just wasn't mapped through to the public types.

Changes

• src/openapi/types.ts — export BackupListResponse
• src/collections/backup/types.ts — incrementalBaseBackupId?: string on BackupStatusReturn (inherited by BackupReturn)
• src/collections/backup/client.ts — parseStatus maps it from the create-status response; backup.list() maps it from each list entry (other list-response quirks left untouched)
• test/collections/backup/mock.test.ts — mock the list + create-status endpoints returning incremental_base_backup_id; 2 tests asserting it surfaces (and stays undefined for a non-incremental backup)

Testing

npx tsc --noEmit, eslint, prettier --check clean. test/collections/backup/mock.test.ts passes (8/8, including the 2 new).

[OsamaAnsar]

I agree with the CLA

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[weaviate-git-bot]

To avoid any confusion in the future about your contribution to Weaviate, we work with a Contributor License Agreement. If you agree, you can simply add a comment to this PR that you agree with the CLA so that we can merge.

beep boop - the Weaviate bot 👋🤖

PS:
Are you already a member of the Weaviate Forum?

[dudanogueira]

Duplicate of: #459

[OsamaAnsar]

Closing in favor of #459 which covers this more broadly — thanks for the heads up @dudanogueira.