[Feature]: App-wide light mode UI in new Wave (successor to WaveLegacy light theme?)

[a0x]

Feature description

What I expected

• A Theme selector (e.g., Light / Dark / System) that affects the entire application UI, similar to what’s described in the WaveLegacy 0.7.2 release notes.
• When macOS is in Light mode (or when “Light” is selected in Wave), the whole UI—including sidebars, browser, and top bar—would be light, not only the terminal content.

Why this matters

• Dark UI causes eye strain for me over longer sessions.
• A light mode UI is important for accessibility and comfort, not just a cosmetic preference.
• The current situation makes it hard for me to use Wave as my main terminal, even though I otherwise really like it.

Implementation Suggestion

No response

Anything else?

I'm curious do you already have this plan(in roadmap) or someone is working on the feature now? Or I'd also like to try myself and submit PR in the future.

Or do you have any suggestions on this feature? Do you suggest me to use WaveLegacy if I currently have to use light UI app?