The per-platform default fetch runtime is a punkbin RELEASE DECISION, so
it now lives as server data (punkbin defaults.txt, c4d948f there) rather
than values baked into the payloads: updating the recommendation is a
one-line punkbin edit in the same change-set that publishes the artifact
it points at - immediate effect for every deployed punk-runtime, no
punkshell release, validated by punkbin's maintenance script, and
mirror-curatable. No pre-convention fallback per user direction (no
mirrors exist yet) - a server without the file gets an actionable
name-it-explicitly message, as does a platform without a recorded line.
Both payloads in parity (rewrapped; roundtrip pin PASS; twins + layout
copy refreshed): baked rt_default/runtime_available prong values removed
(the linux-arm one had already drifted from the server's actual artifact
name - the config-in-code failure mode this removes); default lookup
keys on the RESOLVED platform, so no-name 'fetch -platform <p>' now
works for foreign staging too (supersedes the foreign-name-required
rule); cached-copy fallback on network failure. ps1 fix: $arch? in
usage strings parsed as a variable NAMED 'arch?' - brace-delimited.
Verified: file:// happy path (local + foreign default), no-entry
platform, missing-manifest, and the LIVE server's 404 path (graceful
until punkbin c4d948f is pushed). Project 0.18.5.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble
0ac4058bcd