Kody Wildfeuer baf9311bfe feat(theme): add dark mode CLI theme support (#911) ...

Add the ability to force dark or light mode colors for CLI output,
overriding the automatic terminal background detection.

Changes:
- Add CLITheme field to TownSettings for persisting preference
- Add GetThemeMode() and HasDarkBackground() to ui package for
  theme detection with GT_THEME env var override
- Add ApplyThemeMode() to explicitly set lipgloss dark background
- Add 'gt theme cli' subcommand to view/set CLI theme preference
- Initialize theme in CLI startup (persistentPreRun)
- Add comprehensive tests for theme mode functionality

Usage:
- gt theme cli              # show current theme
- gt theme cli dark         # force dark mode
- gt theme cli light        # force light mode
- gt theme cli auto         # auto-detect (default)
- GT_THEME=dark gt status   # per-command override

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-24 22:15:48 -08:00

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