fix(waybar,menu): #51 doctor indicator glyph + CC rebuild hints + scroll

Doctor Waybar indicator now emits a non-empty glyph (󰒡) + class:bad when
unhealthy (was "text":"" → self-hidden, so the tripwire never showed);
Control Center appearance toggles (blur/gaps) print "(requires rebuild)"
matching the other CC toggles; summer-day workspace scroll e±1 → r±1 to
match every other bar.

Worktree agent; diff reviewed + cherry-picked. V0 flake check + V1
(HM generation, nomarchy-control-center build). V2 render folded into #44.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

themes/summer-day/waybar.jsonc

@@ -17,8 +17,8 @@
     "disable-scroll": true,
     "all-outputs": true,
     "on-click": "activate",
-    "on-scroll-up": "hyprctl dispatch workspace e+1",
-    "on-scroll-down": "hyprctl dispatch workspace e-1"
+    "on-scroll-up": "hyprctl dispatch workspace r+1",
+    "on-scroll-down": "hyprctl dispatch workspace r-1"
   },
 
   "custom/launcher": {