fix(frontend): ClaudeReset — live currentHour, real Set derived, in-flight tracking, status row

Bugs fixed
- fadedHours was $derived((): Set => {...}) — returned a *function*, not
  a Set. blockClass() then called fadedHours() once per of the 24
  buttons, defeating Svelte's memoization. Now uses $derived.by(() =>
  Set), passed in to blockClass as a value.
- currentHour was $derived(new Date().getHours()) which is computed once
  on mount and never updates. After midnight (or any hour boundary) the
  'now' ring stayed on the wrong block. Now driven by a nowMs $state
  bumped by a 30s setInterval, cleaned up on destroy.
- Rapid double-clicks could land out of order ('last response wins, not
  last click'). Now tracks an in-flight Set + per-hour sequence counter;
  stale responses are dropped and pending buttons are disabled.
- No feedback on wake success/failure. Snapshot now includes lastWake +
  pendingRetry, surfaced as a colored status row.

Cleanups
- resetOffsetHours pulled from the server snapshot (was hardcoded +5).
- fadedHours window is now resetOffsetHours - 1 (was hardcoded 4).
- onclick handler short-circuits when the hour is already pending.

0 files changed, 0 insertions, 0 deletions