- The "auto" seasonal theme was computed once at mount, so a long-lived session
never crossed a season/holiday-window boundary. SeasonalEffect now re-evaluates
on an hourly ticker (auto mode only) AND refreshes on entering auto — the
interval only runs while auto, so a stale mount-time timestamp would otherwise
resurface on a pinned/off → auto switch (the exact frozen-at-mount bug, caught
in review). The decision is extracted to a pure resolveSeasonTheme(override,
now) in seasonSchedule.ts (removing an unsafe cast) and unit-tested.
- Selecting seasonal "auto" while a chat background was set was a silent no-op:
the seasonal picker only cleared the background for a *specific* theme, and the
overlay is suppressed while a background is set. Now any active seasonal mode
("auto" included) clears the background; only "off" leaves it — symmetric with
the background picker (which sets seasonal "off"). The overlay guard stays as a
backstop for legacy persisted state.
Bug-hunt findings from LOTUS_TODO. Three review passes (the 2nd caught the
switch-into-auto staleness); +2 unit tests. Gate-green (tsc, eslint, prettier,
922 tests, build).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Settings never told the user which days "Auto" turns each seasonal theme on.
Extracted the date windows out of getActiveSeason into a shared SEASON_SCHEDULE
(seasonSchedule.ts) — the single source of truth for both the runtime Auto
selector and the settings UI, so displayed dates can't drift from real activation.
- seasonal/types.ts: SeasonTheme + SeasonalOverlayProps (leaf module).
- seasonal/seasonSchedule.ts: priority-ordered SEASON_SCHEDULE with human date
ranges + SEASON_DATE_RANGES + getActiveSeason (behavior-preserving refactor).
- SeasonalEffect.tsx: consume the shared type/selector; re-export SeasonTheme.
- General.tsx: per-theme date caption under each swatch ("Oct 15 – Nov 1"), Auto
reads "By calendar", and the section description explains it.
- seasonSchedule.test.ts (6): representative day per theme, overlap priority
(Deep Space > Autumn, New Year > Lunar), inclusive boundaries, off-season null.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>