TP-08 — Build `QueryaTheme` from custom manifest

[ZhuchkaTriplesix]

Epic: A
Depends on: TP-05, TP-06, TP-07

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

Goal

Provide one factory that converts QueryaThemeManifest into the existing app-level QueryaTheme.

Files

• lib/core/theme/parser/querya_theme_from_manifest.dart
• test/core/theme/parser/querya_theme_from_manifest_test.dart

Implementation

Add:

QueryaTheme queryaThemeFromManifest(QueryaThemeManifest manifest)

Algorithm:

1. Pick fallback:
   • dark -> QueryaTheme.darkDefault
   • light -> QueryaTheme.lightDefault
2. Build ColorScheme from shadcn_colors.
3. Build QueryaEditorTheme from editor_colors.
4. Build QueryaWorkbenchTheme from editor_colors.
5. Return fallback.copyWith(...).
6. Preserve tokenColors.

Acceptance Criteria

• Full dark fixture creates dark QueryaTheme.
• Full light fixture creates light QueryaTheme.
• tokenColors are preserved.
• No ThemeData is created.

Tests

• dark brightness;
• light brightness;
• shadcn color mapping;
• editor/workbench mapping;
• token colors preserved;
• minimal fixture fallback.

---