Keysets V2

Nutshell is now using the new keyset V2 format which due to its larger size prevents keyset ID collisions.

Notable changes

Mint

• management CLI improvements
• database optimizations
• USD support for Blink backend

Wallet

• create P2PK locked tokens with timelock and refund pubkey

Other

• improve testing pipeline
• legacy API cleanups
• updated NUT-21 and NUT-22 matching rules

What's Changed

• chore: verify version consistency in build workflows by @a1denvalu3 in #897
• fix: use -- before quote ID in management CLI tests by @b-l-u-e in #912
• Chore: ci modernize workflows by @b-l-u-e in #911
• fix: enable sqlite wal mode by @a1denvalu3 in #908
• feat(wallet): add 'lock p2pk' CLI command with --timelock and --refund by @ritoban23 in #914
• feat: keysets v2 by @a1denvalu3 in #798
• feat(lightning): add USD (Stablesats) support for Blink backend by @Forte11Cuba in #869
• docs: add AGENTS.md for AI/agent workflow guidance by @ye0man in #917
• Remove deprecated promises field from PostRestoreResponse by @coldbrewnosugar in #900
• fix: support both padded and unpadded base64url in AuthProof (NUT-22) by @KvngMikey in #920
• fix: prevent P2PK case-bypass by @a1denvalu3 in #923
• fix: add greenlet as an explicit dependency by @wqxoxo in #913
• ci: upload test results to codecov by @callebtc in #947
• fix(wallet): skip mpp test for LNbits in regtest by @a1denvalu3 in #948
• test(mint): add tests for gRPC server functions in management_rpc by @a1denvalu3 in #943
• tests: Increase test coverage by @callebtc in #949
• Remove paid & issued field in MintQuote by @KvngMikey in #838
• fix: use row lock select statements by @a1denvalu3 in #906
• feat: protected endpoint wildcard matching rules by @robwoodgate in #885
• Issue 789. Avoid the duplication of websocket messages that failed that test by @aaronmcdaid in #790
• Add GetQuoteTtl Method to Management RPC by @KvngMikey in #874
• feat: add fuzzing infrastructure and tests by @a1denvalu3 in #864
• fix: set/unset melt quote and associated proofs in same transaction by @a1denvalu3 in #880
• fix restore_promises derivation-path mismatch on subset restores by @b-l-u-e in #901
• feat: proxy-aware rate limiting with sane defaults by @asoltys in #910
• fix(mint): validate P2PK/HTLC sigflags and refactor verify_inputs_and_outputs by @callebtc in #959

New Contributors

• @ritoban23 made their first contribution in #914
• @Forte11Cuba made their first contribution in #869
• @ye0man made their first contribution in #917
• @coldbrewnosugar made their first contribution in #900
• @wqxoxo made their first contribution in #913
• @robwoodgate made their first contribution in #885
• @aaronmcdaid made their first contribution in #790
• @asoltys made their first contribution in #910

Full Changelog: 0.19.2...0.20.0