test(web): add 232 tests for catalog, presets, skeleton, hooks
Lib: blueprint-field-catalog (74).
Hooks: useAppPreferences (25), useTheme (19),
useMultiSelectIntersection (12), useTimelineKeyboard (21).
Components: ColumnTogglePanel, DateRangePresets (17, timezone-safe),
ShimmerSkeleton (29), SuccessToast.
Fix ShimmerGroup tests to use plain divs (ShimmerSkeleton doesn't
forward the style prop from cloneElement).
Fix DateRangePresets tests to compute expected dates via toISOString
matching the component's UTC conversion.
Web test suite: 87 → 96 files, 844 → 1076 tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Hartmut
dcac9952ca