Module theme 

ftui theme system for cass.

Bridges the existing ThemePalette color definitions to ftui’s Theme, StyleSheet, and ColorProfile infrastructure so every widget draws from the same token source.

Design goals

• Single source of truth: all panes consume styles from CassTheme.
• Terminal-aware: truecolor terminals get the premium palette; 8/16-color and mono terminals get safe automatic fallbacks via ColorProfile.
• Env-var overrides: respects NO_COLOR, CASS_NO_COLOR, CASS_NO_ICONS, CASS_NO_GRADIENT, CASS_DISABLE_ANIMATIONS, and CASS_A11Y.
• Preset cycling: all nineteen ThemePreset variants produce a valid ftui Theme.

Modules

style_ids

Well-known style names registered in the StyleSheet.

Structs

CassTheme

Central theme object consumed by every ftui widget in cass.

ThemeFlags

Runtime feature flags derived from environment variables.

Functions

dim_color

Dim a color by multiplying its RGB channels by factor (0.0=black, 1.0=original).

lerp_color

Smoothly interpolate between two ftui Colors.

lerp_u8

Linear interpolation between two u8 values.