Raw-file artifact servers have no directory listing, so served-platform
discovery rides a root-level platforms.txt manifest, now part of the
punkbin layout contract (generated by punkbin's src/build_sha1sums.tcl;
committed in punkbin locally - 7b8a244 - push remains the maintainer's
call; third-party mirrors using the layout carry the same file).
Both payloads in parity (rewrapped; roundtrip pin PASS; layout copy +
.ps1 twin refreshed): 'platforms' lists local bin/runtime/* folders with
the local platform marked; 'platforms -remote' fetches the manifest
(cached-copy fallback), marks local platform / local-dir presence /
local-only dirs, and points at 'list -remote -platform <name>' for
per-platform runtimes. Servers without the manifest get an actionable
message naming the -platform escape hatch and the canon reference
('help platforms'). Verified end-to-end through the wrapped cmd against
a file:// mirror simulation of the local punkbin checkout, including the
no-manifest fallback path. Project 0.18.2.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble
2ce3edc390