AgentENV Firecracker v1.17.0-next.1 ARM64 GNU patchset 1

Validated AgentENV ARM64 GNU runtime based on kvcache-ai/firecracker-next v1.17.0-next.1 (base fee2681), with the four seccomp compatibility commits through b792de1. Built for aarch64-unknown-linux-gnu and validated by the AgentENV ARM64 assembly regression. The archive contains the Firecracker binary, matching seccomp policy, checksums, and assembly provenance.