dig-did 0.3.0

The DIG Network canonical Chia DID expert crate: a pure, key-free, network-free SpendBundle-builder for Chia Decentralized Identifiers. Builds the exact CoinSpends for every DID lifecycle operation and reports the exact signatures a caller must produce — never holds a key, never signs, never broadcasts.

//! DID metadata update & settle (SPEC §3, unit U3).
//!
//! Will own the metadata-update spend and the follow-up "settle" spend that confirms new metadata so
//! wallets can sync it from the parent coin, plus the no-op spend used to emit conditions (e.g.
//! assigning the DID to NFTs) without transferring it. Each owner op requires one `AGG_SIG_ME`.