An agent-scoped RAG writes its config to <data>/agents/<agent>/<rag>.yaml, so
its sbx mixin sidecar lands beside it as <rag>.sbx-mixin.yaml. Discovery scanned
the agents directory only for a file named exactly sbx-mixin.yaml, and scanned
for suffixed sidecars only in the top-level rags directory, so a RAG attached
while an agent was active contributed no network allow rule and no credential to
the sandbox. The failure was silent: the sandbox launched and the RAG was simply
unreachable from inside it.
The two collectors differed only in the filename shape they matched, so they are
now one scan that takes the set of layouts to look for. The agents directory
asks for both its own sbx-mixin.yaml and the suffixed sidecars one level in,
which is the shape that was missing. Discovery order is unchanged, and it is
load-bearing: each mixin becomes a --kit in list order and later ones layer over
earlier ones, so the workspace mixin must stay last.
Dark-Alex-17
dc677a2529