feat(theme): finish neon-glass polish (#88)

Rewrite whole-swap rofi.rasi to rofi-native @colors (was invalid CSS
var()); cyan glass panel matching Boreal's hex-alpha pattern. btop
titles/selection in accent cyan; ui rounding/opacity tuned; preview.png
from theme-shot. Bar stays generated from JSON (no waybar.css).

Verified: V2 — contrast 24×7; theme-wholeswap; theme-shot neon-glass
desktop+menu viewed; boreal theme-shot regression green.

docs/ROADMAP.md

@@ -400,6 +400,13 @@ Design/decision records and a running log of shipped work (items marked
   built-in. Rules in `modules/nixos/dock-audio-rules.nix`;
   `checks.dock-audio` pure + conf-file VM. Real hotplug V3 in
   HARDWARE-QUEUE.
+  ✓ **neon-glass finish (#88, `VISION § D`):** rewrote whole-swap
+  `rofi.rasi` to rofi-native `@color` glass panel (cyan rim, soft
+  selection wash — same hex-alpha glass pattern as Boreal); btop title/
+  selection in accent cyan; ui rounding/opacity tuned; `preview.png`
+  regenerated from theme-shot. Bar remains generated from JSON (no
+  waybar.css reintro). Contrast + theme-wholeswap green; V2 theme-shot
+  neon-glass + boreal viewed.
 - ✓ **Hibernate double-unlock:** on resume from hibernate the LUKS
   passphrase already gates the machine, but locking hyprlock before sleep
   meant a second password. Fixed by *not locking* before an encrypted