feat: guest command exec over vsock (Hyper.exec/3)#49

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feat/guest-exec-vsock

Commits on Jul 1, 2026

feat(guest-agent): wire framing for exec request/response
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feat(guest-agent): exec core capturing stdout/stderr/exit
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feat(guest-agent): PID-1 init (mounts, reaping) + AF_VSOCK accept loop
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fix(guest-agent): keep accept loop alive on EINTR and transient clone failure
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feat(node): guest-agent build task + per-arch provider
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feat(img): bake guest agent into rootfs at /hyper-init
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feat(fire_vmm): boot the guest agent as init (init=/hyper-init)
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feat(suidhelper): chroot-jail grant-vsock op + wrapper
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feat(fire_vmm): host-side vsock exec client
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feat(fire_vmm): configure + grant the guest vsock device
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feat(node): Hyper.exec/3 — one-shot guest exec over vsock
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fix(suidhelper): grant-vsock accepts exact leaf name vsock.sock
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fix(guest-agent): decode env as a JSON object (BTreeMap) to match the client
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chore(guest-agent): commit Cargo.lock, gitignore target/
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refactor(guest-agent): build into priv/ via Mix compiler, ship with the app
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refactor(guest-exec): CBOR wire protocol, drop hand-rolled framing
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test(guest-exec): pin response CBOR anchor cross-language; fail-soft unwrap_bytes
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Commits on Jul 2, 2026