Load the saved theme at startup and apply it to egui's visuals (cloning the
global style so the font scaling is preserved); the egui context persists
across the hide/show window cycle, so it sticks. Route the previously
hardcoded status colours (streaming/waiting/success/warning/error) through
the active theme so a theme re-skins the whole app, not just the chrome (the
QR code stays black-on-white so it remains scannable). Settings gains an
Appearance section: a picker that switches themes live and persists the
choice, and an editor with a colour button per palette field, a live
preview, and Save (writes a .toml). The picker refreshes from disk when
Settings opens, so dropped-in files appear without a restart.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
mollusk
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