New TUI themes (Solarized, Tokyo Night, One Dark, Rosé Pine, …)

[aakashrajput]

Why

13 built-in themes today (Dark, Light, Dracula, Nord, Ayu, Catppuccin (Mocha), Gruvbox, Neon, Synthwave, Ember, Matrix, Cobalt, Midnight). Themes are the friendliest possible first contribution — self-contained, visual, zero risk.

What

Contribute new color themes. Note: Nord, Gruvbox, and Catppuccin (Mocha flavor) already exist — pick from what's actually missing:

• Solarized (light + dark)
• Catppuccin's other 3 flavors (Latte, Frappé, Macchiato — only Mocha exists today) (Done by @siddhanttiwari19 )
• Tokyo Night (Done by @floze-the-genius )
• One Dark
• Rosé Pine
• A high-contrast accessibility theme

A theme is a palette object — see src/engine/theme.ts for the shape and existing examples (e.g. CATPPUCCIN_PALETTE at line 164 for the pattern to follow for the other flavors). Register it, and /theme picks it up automatically.

Guidelines

• Check contrast: body text, dim/secondary text, diff green/red, selection highlight all readable on the theme background
• Test in a real terminal with /theme <name> — include a screenshot in your PR
• One theme (or one family, e.g. all 3 remaining Catppuccin flavors) per PR

Acceptance criteria

• Theme selectable via /theme, persists across restart
• Screenshot in PR; typecheck green

[siddhanttiwari19]

Hi @aakashrajput ,I'd like to contribute the three remaining Catppuccin flavors (Latte, Frappé, and Macchiato) as a single PR since they share the same palette family. I'll follow the CATPPUCCIN_PALETTE pattern at line 164, verify contrast on all required elements, test each with /theme in a real terminal, and include screenshots. Could you assign this to me?

[aakashrajput]

@siddhanttiwari19 just put a PR tagging the issue, I will update the desc once merged.

[Ayush7614]

Hi @aakashrajput — PR adding Rosé Pine theme: #52