Attaching one

oss ext add ~/apache/log4j2-workout
oss ext list

NAME           KIND   STATE     VERBS
log4j          runner ok        list, run, matrix, coverage, repro, review, …
devon          memory ok        file, index, harvest, map, digest, doctor

Then use them through the core:

oss run --name log4j list --apps
oss memory doctor

Command	Does
ext add <path>	Attach, or update an entry of the same name
ext list	What is attached, and whether it is still reachable
ext refresh <name>	Re-read that manifest after editing it
ext remove <name>	Forget the path. Deletes nothing on disk

STALE means the manifest moved

The registry stores a snapshot plus its SHA-256. Edit the manifest and the entry shows STALE, and dispatch is refused until you refresh.

Note

That refusal is deliberate and deliberately total. An earlier version warned and ran unless the stored copy declared a write — which is the same bug in miniature, because the stored copy is exactly what cannot be trusted. A manifest that had begun declaring a verb an outward write still ran, on the strength of a snapshot saying it was harmless.

Seeing it on a page

oss serve            # http://localhost:1504

Binds to loopback only, and never dispatches a verb: an outward write must be confirmed at a terminal, and a browser has none.