v0.5.0

0.5.0 — Public Sepolia staking

Official research preview. This release uses unaudited, untrusted-testnet
proof artifacts and Sepolia ETH. It is not a production anonymity or security
boundary and must not be used with real funds or sensitive traffic.

The bundled Grove now admits any member who registers a tier-1 commitment with
exactly 0.1 Sepolia ETH. Tier 1 permits one CONNECT tunnel per fixed 60-second
epoch and caps that tunnel at 40 MiB of combined payload. Cross-gateway replay
suppression is authenticated but best-effort and fail-open, not an atomic global
reservation system.

Added

• Added a fresh immutable public staking profile with tier 1 at 0.1 Sepolia ETH,
  compatibility tier 8 at 0.8 Sepolia ETH, a 24-hour unbonding window, and the
  real in-repo testnet exit verifier.
• Added native Rust member registration with owner-only key-file or environment
  key input, local EIP-1559 signing, exact on-chain bond discovery, receipt
  confirmation, and duplicate protection.
• Added bundled zero-configuration JS and Rust defaults for the live Elder,
  Canopy signer, staking contract, RPC, deployment block, tier, and rate policy.
• Added onion-signed node rate capabilities and fail-closed client matching for
  the 60-second epoch, 60-second root lifetime, and 40 MiB payload ceiling.
• Added a pinned runtime-bytecode manifest for the staking set, commitment
  hasher, exit wrapper, Groth16 verifier, and linked Poseidon libraries; both
  local release tests and live deployment preflight reject executable drift.

Fixed

• Expire superseded membership roots and last-known-good RPC snapshots by wall
  clock even when no later membership event occurs.
• Reset node and light-client root history after a stale observation gap, and
  retain only the current root during RPC fallback, so recovery cannot make an
  old withdrawn-member root fresh again.
• Keep identity enrollment, registration, and egress on the same explicit tier
  in both implementations, including RPC-only overrides.
• Sort contract tier tables globally so the new limit-1 tier precedes limit 8.