v0.51.0

What's Changed

• feat(adk): align stores with ADK 2 contract by @cofin in #525
• feat(utils): add bounded async bridge controls by @cofin in #533
• feat: add native metadata statistics by @cofin in #522
• feat: add cloud job session controls by @cofin in #523
• test: cover GizmoSQL native metadata fallback by @cofin in #534
• fix(core): land four latent correctness bugs by @cofin in #535
• feat: native bulk ingest paths across adapters by @cofin in #540
• fix(#532): align window total schema mapping by @cofin in #541

Full Changelog: v0.50.1...v0.51.0