Deletes multiple repositories in a single batch request. Best-effort per repository — one repository failing does not abort the rest. Each repository gets an independent per-repo report in reports.

Security: Requires an admin user.

Consumes / Produces: application/json

Status codes:

• 200 — All repositories deleted successfully (includes every repository config missing — per-repo success-report entries). Body is RepoBulkRemovalReport (reports required).
• 207 — Mixed results (some succeeded, some failed). Body is RepoBulkRemovalReport (reports required).
• 400 — Empty/missing repo key list, or fail-fast early validation. Body is RepoBulkRemovalFailFastReport (statusMessage only; reports omitted).
• 401 — Authentication failure. Body is ErrorResponse (not a bulk report).
• 403 / 409 / 424 / 500 — All repositories failed — HTTP status taken from the failure (for example 403 when all are blocked by validation). Body is RepoBulkRemovalReport, except fail-fast 403 early validation which uses RepoBulkRemovalFailFastReport (statusMessage only).

Always inspect each entry in reports[] when HTTP status is 200, 207, or an all-failed status with per-repo work (403 / 409 / 424 / 500). On fail-fast early validation (400 / some 403), reports is omitted and only statusMessage is present.