0.3.0 Catch-up release. Brings the Unity SDK in line with chain changes that landed during the 2026-04-17 → 2026-05-03 stretch. Wire-format compatibility: - StringTolerantUlongConverter + nullable variant; VelocityJson shared serializer settings. Every DTO now accepts the chain's stringified u64 wire format (heights, balances, fuel, fees, rates, lifetime counters). Bridge settlement endpoints: - BridgeOutStatus DTO + GetBridgeOutStatusAsync / WaitForBridgeOutAsync — closes the forward-leg loop without the SDK touching a destination-chain RPC. - BridgeInStatus DTO + GetBridgeInStatusAsync — Hive/Solana → Velocity deposit progress. - HiveBridgeMemo helper for the velocity:<chain>:<address> memo format Hive depositors paste. Plus the post-0.2.0 polish that merged on main: - Error-body parsing, configurable Timeout. - Auto-reconnect streaming, Task/IAsyncEnumerable -> coroutine adapters. - GetMetricsAsync, GetValidatorAttestationHealthAsync. - WebGL SSE via .jslib EventSource shim. - Dormant unityci/editor CI job. Still deferred: player-signed actions, Phase 4-6 (AMM / flash loans / capability payment) action bodies, Solana-side mint_from_proof, sample .unity scene + editor windows. Demo-targeted catch-up.