Handshake v0.9.4

🔍 Sharper on HiDPI Linux

The App scale slider now goes down to 50% (was 80%). On fractional-scaled Linux displays (e.g. Hyprland at 1.6), GTK3 — which Tauri is built on — can't scale fractionally, so the app renders blurry. Workaround: launch with GDK_SCALE=2 to render at a crisp integer 2x, then dial App scale down to bring it back to true size. Settings → Appearance → App scale.

Nothing else changed — a small quality-of-life release.