Implements docs/prototypes/Reader V3 主题语义令牌.md (v3.1):
- 暖陶 (default), 雾蓝, 青绿 app themes plus the reading-only 黑白灰, each
light and dark. Components read --color-* tokens from
styles/theme-tokens.css, selected by data-theme + data-mode; the
TypeScript mirror lives in shared/theme/theme.ts.
- Brand is split per the spec: brand/ch-* only fill (with on-brand/on-ch on
top), brand-text/ch-*-text for text. --reader-accent/--media-accent are now
brand text; --reader-fill/--media-fill are brand fills. Selected segmented
controls use brand-soft + brand-text.
- One preference per server+account (reader.theme.v2): app theme, mode
(system/light/dark), the follow-system light/dark pair, and the reading
theme. V3 choices migrate per spec §8 (rose falls back to 暖陶 light).
- 外观与主题 rebuilt from prototype 23: follow-system switch with the
light/dark pair, app-theme cards with light/dark previews, and the
reading theme (跟随应用 / 黑白灰).
- Reader: 黑白灰 is set on the reader container only; the appearance panel
offers 跟随应用/黑白灰 and 明暗; day/night sets the mode; the e-ink preset
uses 黑白灰 light.
- Video and music players wear the current theme's dark values (§4.7).
- Removed the legacy light/sepia/green/dark palettes and the
<html data-theme> writes from reader settings, which would now collide
with data-theme="green".
- Tests: theme-tokens.test.ts keeps CSS and TS values identical and checks
the §5 contrast pairs for all 8 palettes; theme.test.tsx covers migration,
resolution, the controller and the settings page.
Kiro Agent
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