feat(wm): add rofi wallpaper launcher and keybindings

dotfiles/config/hypr/hyprland.conf

@@ -523,6 +523,7 @@ bind = $hyper, slash, exec, toggle_taffybar
 bind = $hyper, 9, exec, start_synergy.sh
 bind = $hyper, I, exec, rofi_select_input.hs
 bind = $hyper, O, exec, rofi_paswitch
+bind = $hyper, W, exec, rofi_wallpaper.sh
 bind = $hyper, Y, exec, rofi_agentic_skill
 
 # Reload config

dotfiles/config/xmonad/xmonad.hs

@@ -1100,6 +1100,7 @@ addKeys conf@XConfig { modMask = modm } =
     , ((hyper, xK_space), spawn "skippy-xd")
     , ((hyper, xK_i), spawn "rofi_select_input.hs")
     , ((hyper, xK_o), spawn "rofi_paswitch")
+    , ((hyper, xK_w), spawn "rofi_wallpaper.sh")
     , ((hyper, xK_y), spawn "rofi_agentic_skill")
     , ((modm, xK_e), spawn "emacsclient --eval '(emacs-everywhere)'")