Phase 8, item three. The tree had 51 previews and every one of them rendered one
thing: a light theme, at whatever width the preview pane happened to be, at 100%
text. That is the only condition under which this app has never had a defect.
`@ConformancePreviews` replaces the bare `@Preview` at all 53 sites -- the two
outside `ui/` included -- and renders each under five: light, dark, 200% text,
compact 400dp, expanded 1000dp. `@Preview` is `@Repeatable`, so this is one
annotation rather than five copied onto every preview and drifting apart. Each of
the four new conditions is where a defect in this app has actually been: a colour
that only fails in dark, a fixed-height container that clips at 200%, a layout
that stretches because nothing held it, a row that reflows badly at phone width.
It also gives phase 6 the check it could not make. "Every screen renders correctly
at 400dp, 700dp, 1000dp, 1400dp and 1800dp" was verified structurally -- the
measure applied at every root and asserted at those widths -- but never looked at
per screen. Two of those widths are now one click away on every screen in the app.
**High contrast is deliberately not in the annotation**, and the argument is worth
stating because the omission looks like a gap. Contrast is a property of the
*scheme*, not of a screen: the app declares six, `ColorSchemeContrastTest`
measures every pair in all six, and a screen right in the default scheme is right
in the high-contrast one by construction. Per-screen high-contrast previews would
be 51 more renders of something already proved -- and there is no `@Preview`
parameter for it in any case, since it needs `TorchTheme(contrast = …)` in the
body.
`ThemeGallery` covers them instead, once, over components rather than screens: all
six schemes side by side, with body copy on surface, a card holding a list item --
the arrangement that rendered a headline at 1.00:1 before phase 3 -- and the three
button emphases. `dynamicColor = false` on purpose, or an android 12+ preview
paints all six columns from the wallpaper and the gallery shows nothing. It is the
only place the medium and high contrast schemes can be seen at all: in the app
they are reachable only through a platform setting, and on android only with
dynamic colour off.
99 lines changed across 50 files, all of them one annotation and its import.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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