ic-platform-types

The canonical Principal, Account, Subaccount and public identity errors used by IC Platform. This group owns a literal package version and changelog, independently of facade/runtime releases, while sharing the same workspace, dependency catalog and lockfile. Platform re-exports these exact definitions; Wire owns its schema implementations. The independent series continues from published Types 0.15.0.

The default feature set is empty. Bytes, bounded text and Serde are always available; principal-external adds registry Principal identities/conversions, and principal-self-authenticating selects the unchanged imported derivation with upstream SHA-224, independently of registry Principal. Enable both when external conversions are also required. There is no runtime, executor, Wire or Candid dependency.

Existing Platform consumers keep their Rust import paths and account identity semantics. Present subaccounts serialize through serde_bytes with exactly 32 bytes. This changes binary Serde contracts: Postcard adds the 0x20 length prefix after Some's 0x01 marker; None stays 0x00. Coordinate Wire schemas/clients, qualify budgets and preserve original retry/hash bytes. External Candid DTOs are unchanged. Its group ledger owns release notes and links the earlier coordinated history. Initial 0.1 notes remain historical. Release and publication require explicit RELEASE_GROUP=types.