docs: note SUPER+D launcher bind dropped

docs/ROADMAP.md

@@ -39,9 +39,9 @@ Design/decision records and a running log of shipped work (items marked
     source** for both the Hyprland binds and the SUPER+? rofi list, so they
     can't drift; `nomarchy-menu keybinds` renders the padded two-column
     sheet (generated/mouse binds carried in its `extra` rows)
-  - ✓ shipped binds: `SUPER+Space` → `rofi -show drun` (quick launch) ·
-    `SUPER+M` → `nomarchy-menu` (main menu) · `SUPER+?` → the cheatsheet;
-    `SUPER+D` stays `-show drun`
+  - ✓ shipped binds: `SUPER+Space` → `rofi -show drun` (app launcher) ·
+    `SUPER+M` → `nomarchy-menu` (main menu) · `SUPER+?` → the cheatsheet
+    (SUPER+D dropped — Space is the only launcher bind)
   - launcher icons: ✓ `show-icons` on, drawing from the theme's icon set
     (Papirus, via the icon-themes work below)
   - decision record: resolves the old Walker/Lua question — no GTK4