The probe tests use an injected fetch, so they cover the shapes that matter
without a network: a matching width, a mismatch, an HTTP error, an unreachable
host, a timeout, and the key being sent only when there is one.
The client tests evaluate the bundle the way the real module loader does —
inside `window.__ModuleLoader__.load` — with a fake `require` that answers
`react` and throws on anything else. That throw is the point: it is the check
that the card stays inside the platform's seed table, which is the constraint a
hand-written client half is most likely to break. The card is then rendered by
expanding its element tree, and its handlers are driven directly to prove that a
changed field reaches `set`, a cleared field reaches `unset`, a number field is
sent as a number, a list round-trips through comma-separated text, and a
read-only namespace disables everything.
The status test moves with the behaviour: status may now run a read-only
`--version`, so the assertion is that it executes nothing else.
dsh-slopo agent
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