Copilot review r1. `updateServerSettings` is also driven by the pagination
toggle, which updates optimistically and — on any rejection — reverts the
override and rolls the live client back to `prevSettings` (#1721). Making
the post-write reload throw handed that catch a rejection whose PUT had
*succeeded*, so it reverted the UI and the client to a value that no
longer matched disk.
Give the reload failure its own type, `ServerListReloadError`, and branch
on it at that call site: report it, leave the optimistic state alone. The
distinction is what the callers need — a failed write must roll back, a
failed read-back must not — and a type carries it without the call site
matching on a message.
The `useServers` mock in App.test.tsx now spreads `importOriginal()` so
the class is the genuine one; a stub would make the `instanceof` check
vacuously false and the branch untestable.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UL9retfvAXRgvi6EWk4SY4
Signed-off-by: cliffhall <cliff@futurescale.com>
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