- CHANGELOG: add an [Unreleased]/Added bullet for the per-row "Test" button
(idle Test -> OK · N / Failed, tooltip, isolated per-row state).
- ai-mcp-server-row: show a red "Failed" when the request itself rejects
(401/403/500/network), reading testMutation.isError — previously only a
server-reported {ok:false} was surfaced and a real reject silently reverted
to "Test". Tooltip uses error.response?.data?.message or the i18n fallback.
- ai-mcp-server-row: clarify the reset-effect comment (hasHeaders is a
presence flag, so value-only token rotation is intentionally not reset).
- ai-mcp-server-row: drop the redundant disabled={isPending} (Mantine already
disables a loading button).
- ru-RU: add the "No tools available" translation.
- tests: cover the request-reject failure, the empty tool list (OK · 0), and
the reset-on-change effect (url / transport / hasHeaders) via rerender.
Note: kept the `"error" in result` guard instead of the suggested bare
`else if (result)` — optional chaining on `result?.ok` doesn't narrow the
discriminated union in the else branch, so the bare form fails tsc.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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