fix(waybar): #51 doctor glyph renders + #52 V2 bake asserts

Doctor tripwire was self-hiding under waybar (PATH miss / weak glyph).
Call nomarchy-doctor by store path, strip ANSI tooltips, use 󰀨 + format
+ signal 10 (generated and whole-swap). theme-shot asserts class:bad,
guest btop.theme, and pokes RTMIN+10 before desktop shots.

V2: theme-shot green for rose-pine, summer-night, catppuccin, everforest,
vantablack; bar crops show the red alert-circle. btop TUI visual is
softGL-blocked (Ghostty) → HARDWARE-QUEUE. Closes #51 and #52.

modules/home/waybar.nix

@@ -115,12 +115,19 @@ let
   # exits 0, so the module only appears when the sheet has a ✖ (the
   # same self-hide discipline as vpn/nightlight/updates). The tooltip
   # carries the first failing lines; click opens the full sheet.
+  # Absolute path to the doctor binary: waybar's custom-module env can
+  # miss system PATH, and `command -v … || exit 0` then self-hides forever.
   doctorStatus = pkgs.writeShellScriptBin "nomarchy-doctor-status" ''
-    command -v nomarchy-doctor >/dev/null 2>&1 || exit 0
-    out=$(nomarchy-doctor 2>/dev/null) && exit 0
-    tip=$(printf '%s\n' "$out" | grep '✖' | head -5 \
+    out=$(${pkgs.nomarchy-doctor}/bin/nomarchy-doctor 2>/dev/null) && exit 0
+    # Strip ANSI so the tooltip is plain text (and waybar never chokes on
+    # control chars); keep only the ✖ lines.
+    tip=$(printf '%s\n' "$out" \
+      | ${pkgs.gnused}/bin/sed 's/\x1b\[[0-9;]*m//g' \
+      | grep '✖' | head -5 \
       | ${pkgs.jq}/bin/jq -Rs 'rtrimstr("\n") + "\n(click for the full sheet)"')
-    printf '{"text":"󰒡","tooltip":%s,"class":"bad"}\n' "$tip"
+    # 󰀨 (md-alert-circle): alert shape that survives incomplete Nerd Font
+    # cuts better than 󰒡; class:bad still paints it @bad.
+    printf '{"text":"󰀨","tooltip":%s,"class":"bad"}\n' "$tip"
   '';
 
   # Per-theme override probe.
@@ -247,7 +254,11 @@ let
     "custom/doctor" = {
       exec = "nomarchy-doctor-status";
       return-type = "json";
+      format = "{}";
       interval = 300;
+      # signal 10: poke after a fix (or from theme-shot) so the tripwire
+      # doesn't wait a full interval after a first-poll miss.
+      signal = 10;
       on-click = "nomarchy-menu doctor";
     };