- Compile whitespace regex once via OnceLock instead of on every
non-success response; makes format_error_body infallible (String
return, no Result) eliminating the only practical failure mode
- Revert default tick rate from 100ms back to 50ms to preserve the
existing 20-second Servarr poll cadence (tick_until_poll=400 × 50ms);
the recv() change is the real CPU fix — the tick rate change was
unnecessary and silently halved the data refresh rate
- Keep MANAGARR_TICK_RATE_MS as opt-in override; note that tuning it
proportionally stretches the poll interval alongside the tick rate
- Replace non-blocking try_recv() event loop with blocking recv() to
eliminate idle spin; the sender tick timeout still drives minimum
wakeup rate so the UI stays responsive
- Lower default tick rate from 50 ms to 100 ms (10 ticks/sec vs 20);
add MANAGARR_TICK_RATE_MS env var for runtime tuning
- Move terminal draws to event boundaries (key + tick) instead of every
loop pass, reducing unnecessary redraws
- In network error handling, prefer concise JSON fields (message /
errorMessage / error) over the raw HTTP body, so Radarr ASP.NET
stack traces don't flood the TUI banner; full body still logged
- Add unit tests for tick-rate parsing and Radarr-style JSON error body
Observed: ~0.6% total CPU at idle vs measurably higher with prod defaults
Jonathan McCumber