feat(api): add list-indexes endpoint, remove sandboxes

[hotdata-automation]

Regenerated from the updated Hotdata OpenAPI spec (bumps the crate to 0.1.3).

Added

• list_indexes_collection (GET /v1/indexes) in hotdata::apis::indexes_api — lists indexes across every table in a database, scoped by the X-Database-Id header — with the IndexEntryResponse and ListIndexesPageResponse models.

Removed

• Sandbox endpoints and models (sandboxes_api, Sandbox, SandboxResponse, CreateSandboxRequest, UpdateSandboxRequest, ListSandboxesResponse, DeleteSandboxResponse), following their removal from the spec.

Source: hotdata-dev/www.hotdata.dev#224

[claude]

Auto-generated SDK update. New list_indexes_collection endpoint and IndexEntryResponse/ListIndexesPageResponse models follow the established generator pattern; modules are registered correctly; sandbox endpoint/model removal is complete with no dangling references in src/; version bump is consistent across Cargo.toml and the configuration user-agent. No issues found.

[claude]

super nit: the regeneration also dropped the public namespace field from WorkspaceDetail and WorkspaceListItem (and from their ::new() signatures), which is a breaking change for any consumer constructing or reading those structs. Worth calling out explicitly in the ### Removed section rather than folding it into the generic "Regenerated the client" line, so downstream users notice it. (not blocking)

[claude]

Auto-generated OpenAPI client update. Generated code is consistent with sibling methods and the sandbox removal is clean (no dangling references). One super nit left inline on the CHANGELOG re: the undocumented namespace field removal.