v0.22.1

[0.22.1] - 2026-06-12

Added

• Add Makefile targets for test, clippy, fmt, bench, no-std, and clean
• Add AGENTS.md for AI agent orientation

Changed

• Update rustfmt.toml with nightly options (group_imports, imports_granularity, reorder_impl_items, use_field_init_shorthand)

• Update CI to use Makefile targets for tests and no_std builds

• Switch CI runners to core self-hosted runners

• Speed up verifier hot paths by evaluating public inputs sparsely and
  reducing heap allocation and scalar-multiplication overhead in proof
  verification.

Fixed

• Hardened prover/verifier deserialization length parsing to reject
  overflowed malformed length fields without panicking.

Full changelog: v0.22.0...v0.22.1