fix(theme): generated waybar/rofi CSS invisible on on-surface palettes (item 27)

Follow-on to the swaync fix (a643391): the generated Waybar CSS colored
the module row and #window @subtext and dim states @muted, and the
generated rofi theme put @fg text on @surface chips — invisible where
palettes use those roles as "on-surface" (flexoki-light: subtext==base,
surface==text; gruvbox: muted/base = 1.27). flexoki-light has no
whole-swap, so it ran this CSS. Generated surfaces only — the summer
whole-swaps are hand-authored and untouched.

- waybar: secondary text → alpha(@text, 0.85); dim states (inactive
  workspaces, DND bell, muted volume) → alpha(@text, 0.5).
- rofi: @dim → text+"80", @surface → text+"1a" (#RRGGBBAA fg tints).
- check-theme-contrast.py pairings/docs now cover all three generated
  surfaces; status glyphs (good/warn/bad on base, worst 2.05) are
  deliberately not held to a text ratio — raising them is palette
  design, a human decision.

Verified: V0; V1 (checks.theme-contrast green over 21 themes;
downstream-template-home builds; rendered waybar style has zero
@subtext/@muted/@surface; rendered custom.rasi shows fg-derived
tints). Honesty: NOT visually verified — V3 queued (flexoki-light
eyeball + dark-theme regression spot-check).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/ROADMAP.md

@@ -858,8 +858,13 @@ how to override it. Items marked ✓ are shipped.
   worst ratio 5.18 across 21 themes) and alpha(@text, 0.1) tints for
   chips/hovers — guarded permanently by `checks.theme-contrast`
   (tools/check-theme-contrast.py, WCAG ratios over themes/*.json).
-  The same audit found generated waybar/rofi CSS shares the bug class,
-  exposed on flexoki-light (BACKLOG item 27).
+  The same audit found generated waybar/rofi CSS shared the bug class,
+  exposed on flexoki-light (no whole-swap) — fixed in the follow-on:
+  waybar dim/secondary shades are alpha(@text) tints, rofi @dim/@surface
+  are fg-derived #RRGGBBAA tints, and the contrast check's pairings now
+  cover all three generated surfaces. Status glyph accents
+  (good/warn/bad on base, 2.0–2.7 in some palettes) were left as-is —
+  raising them is palette design, a human call.
 - ✓ **Waybar crash on theme switch left the session bar-less** (Latitude
   hardware QA, 2026-07-04): exec-once has no supervisor, so any crash
   orphaned the session until relogin — and the switch path itself was