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/VISION.md

@@ -93,7 +93,7 @@ Reference: [HARDWARE.md](HARDWARE.md) §4–§5, §11 (doctor).
 
 | Idea | Intent | Notes |
 |------|--------|-------|
-| **Fewer themes, sharper** | Finish or quarantine neon-glass; invest in whole-swap quality | **NEXT #88** finish path (promoted 2026-07-11); contrast stays gated |
+| **Fewer themes, sharper** ✓ | Finish or quarantine neon-glass; invest in whole-swap quality | ✓ #88 finish — glass rofi (proper @colors), btop, preview; bar stays generated (no broken waybar.css) |
 | **Time-of-day pair** ✓ | Auto light/dark (e.g. summer-day ↔ summer-night) from schedule | ✓ shipped #79 (2026-07-10) — `settings.autoTheme` + timer; still one engine |
 | **Theme switch speed** | Wallpapers artifact split (LATER) if switches still feel slow | GOALS: no second pipeline |
 
@@ -156,9 +156,7 @@ From GOALS non-goals and installer audits — do not “fill the roadmap” with
 
 1. `VISION § B` — post-install hardware hints (self-gated first-session
    toast when `fwupdmgr` / `fprintd-list` exist; one-shot markers; no nag)
-2. `VISION § D` — neon-glass polish → **NEXT #88** (finish path; do not
-   reintroduce broken whole-swap waybar without @define-color parity)
-3. `VISION § D` / LATER — wallpapers artifact split (decided deferred;
+2. `VISION § D` / LATER — wallpapers artifact split (decided deferred;
    promote only if theme-switch latency still hurts after measurement)
 4. `VISION § H` — HARDWARE-QUEUE burn-down (human-only V3; agents only
    append exact steps)