Fortal Button and Toggle lose content at 200% text scaling

[leoafarias]

Summary

Fortal Button and Toggle lose content at the supported 200% accessibility text scale:

• size-1 Button keeps a fixed 24-pixel height and clips its label;
• size-2 Toggle overflows horizontally in a realistic constrained layout.

Found while validating #80 at b16636b017f3c8832d8f27f316cc24c0ad92ce8a.

Flutter's large-font guidance requires layouts to leave enough room at the largest platform font setting. Flutter's Android nonlinear-scaling guidance specifically recommends testing the UI at the maximum 200% font setting.

Button reproduction

fortal_button_styles.dart applies .height(metrics.height) to non-ghost variants.

At TextScaler.linear(2), a raw size-1 button keeps the 24-pixel recipe height while the Continue paragraph's natural height is greater than its laid-out render height. No overflow exception is required for this failure; the label is silently clipped.

Toggle reproduction

RemixToggle.build places the icon and label directly in a RowBox, with no flexible, wrapping, or overflow policy.

MediaQuery(
  data: const MediaQueryData(textScaler: TextScaler.linear(2)),
  child: SizedBox(
    width: 200,
    child: FortalToggle(
      selected: false,
      label: 'Workspace Write',
      onChanged: (_) {},
    ),
  ),
)

This produces a RenderFlex overflow.

Expected

At 200% text scaling, control text remains available without clipping or a render overflow. Normal-scale Radix/Fortal metrics remain unchanged.

Suggested direction

• Treat ordinary button recipe heights as minimum heights, or derive a larger minimum from the effective text scaler.
• Give Toggle labels an explicit constrained contract: flexible wrapping, or a documented ellipsis policy that preserves the complete accessible name.
• Exercise the smallest size and narrow supported layouts in widget tests.

Acceptance criteria

• Button labels are not clipped at 200% text scaling for sizes 1–4 and representative variants.
• A labelled Toggle does not overflow at 200 logical pixels and 200% text scaling.
• Icon-only controls preserve their intended fixed geometry.
• Normal-scale Fortal parity snapshots/geometry remain unchanged.
• The semantic label remains complete if visual ellipsis is selected.

Scope

This issue is about supported text accessibility. It does not require arbitrary 300% linear scaling or changing the normal-scale Radix metrics.

[leoafarias]

Resolved by #80 and included in merge commit 40704eb. The merged PR includes the implementation and verification for this issue. Closing as completed.