TP-05 — Map `shadcn_colors` to `ColorScheme`

[ZhuchkaTriplesix]

Epic: A
Depends on: TP-04

Source: docs/theme-parser-github-issues.md

Goal

Convert custom shadcn_colors into shadcn_flutter.ColorScheme with fallback values.

Files

• lib/core/theme/parser/querya_theme_color_scheme.dart
• test/core/theme/parser/querya_theme_color_scheme_test.dart

Implementation

Add pure function:

ColorScheme colorSchemeFromQueryaThemeColors({
  required Map<String, String> colors,
  required QueryaTheme fallback,
});

Map these keys:

• background
• foreground
• card
• cardForeground
• popover
• popoverForeground
• primary
• primaryForeground
• secondary
• secondaryForeground
• muted
• mutedForeground
• accent
• accentForeground
• destructive
• destructiveForeground
• border
• input
• ring
• chart1
• chart2
• chart3
• chart4
• chart5

Fallback:

• missing key -> fallback colorScheme value;
• invalid optional color -> fallback value;
• debug log invalid optional key if useful.

Acceptance Criteria

• Function is pure.
• Missing optional keys preserve fallback.
• Full fixture maps distinct expected values.
• Brightness comes from fallback theme, not from colors map.

Tests

• full map uses custom values;
• missing keys use fallback;
• invalid optional color uses fallback;
• chart colors fallback correctly.

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