ZbHealthReportClient caught only HttpRequestException/OperationCanceledException,
so an unknown Content-Type charset (InvalidOperationException from
ReadAsStringAsync) escaped the probe, faulted Task.WhenAll and the poller
BackgroundService, and StopHost took the dashboard down.
- client: final catch-all returns an Unreachable result for that instance
- poller: per-target Guarded probe + catch-and-log per sweep in ExecuteAsync
- tests: unknown charset (both tiers), arbitrary handler exception, sweep with
one bad instance, and the BackgroundService survival loop
- code-reviews: Overview-001 Resolved; README regenerated
Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
First reviews of Secrets, LocalDb, GalaxyRepository and Overview, and
2026-11-09 re-reviews of Auth, Health, Theme, Telemetry, Audit and
Configuration, all at 91fb2b4. 49 new open findings, each with a P1/P2/P3
priority and a failure scenario: 1 P1, 13 P2, 35 P3. README regenerated;
REVIEW-PROCESS, template and regen script now cover all ten libraries and
the Priority field.
Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
Joseph Doherty