0.5.2
Adds Signing.SignedActionEnvelope helper for the wrapped-JSON
envelope shape chain confirmed as the going-forward standard for
new signed-* endpoints (Mint / Transfer / Burn / Swap / AMM / Flash
shipping in chain post-demo batches 1-3, May 12-30):
{ signed_action: { kind, payload, authority_key, authority_signature } }
Pre-positioned: when those endpoints land, the SDK already has the
borsh writer (0.5.0), domain tags (0.5.0), payload structs (0.5.0),
and the envelope wrapper (this release). Only the HTTP-call layer
per endpoint needs writing — fine-grained, low-risk follow-up.
CHANGELOG documents the full signed-endpoints inventory: 5 exist
today, ~13 land post-demo, plus §18 borsh goldens now pinned
upstream at bridge_golden.rs commit 338413a.