systemd ready-gate: HTTP(S) HEALTHCHECK not converted to curl (raw URL passed to bash)

[adiled]

Deviation: HEALTHCHECK with an HTTP(S) URL is legal per the grammar (HEALTHCHECK ws ( url | command_string ), and SPEC.md "Starts with http:// or https:// → HTTP check"), but the systemd ready-gate passes the raw URL into bash instead of converting it to a curl poll.

src/orchdi.rs::healthcheck_to_cmd() correctly maps http(s)://... → curl -sf '...', and that is used by build_dep_gates() which feeds the launchd and orchdi supervisors.

But systemd generate_ready_gate() (src/platform/systemd/generate.rs) uses service.healthcheck verbatim:

let healthcheck = service.healthcheck.as_deref().unwrap_or("true");
...
"ExecStart=/bin/bash -c 'until {} >/dev/null 2>&1; do sleep 2; done'",

So HEALTHCHECK http://localhost:8000/health renders an invalid bash command (http://localhost/... is not a valid command) — the gate never succeeds and blocks dependents.

Fix: apply healthcheck_to_cmd (or the equivalent curl conversion) in the systemd ready-gate path, matching launchd/orchdi.

[adiled]

Fixed in v0.3.2 (ec7244b / #53).