docs: fix README, remove gtklock and wlogout remnants

README: fix keybind (wlogout → moonset), remove gtklock from project
structure, correct package counts, remove nonexistent install-themes.sh,
mark update.sh as legacy wrapper.
Remove gtklock packages (5) and wlogout from package lists.
Remove defaults/xdg/gtklock/ config directory.
Remove stale foot/waybar overrides from transform.sh.

README.md

@@ -50,7 +50,7 @@ desktop that can be rebuilt from scratch in minutes.
 4. Reboot again — done.
 
 The archinstall config clones this repo to `/opt/moonarch` via custom-commands.
-post-install.sh handles the remaining ~100 packages, all configs, themes, services,
+post-install.sh handles the remaining ~95 packages, all configs, themes, services,
 and user setup.
 
 ### Transform (Existing Arch+Wayland System)
@@ -99,15 +99,14 @@ config/
   user_configuration.json       archinstall config (locale, audio, services, custom-commands)
 
 packages/
-  official.txt                  Arch repo packages (~100), one per line
-  aur.txt                       AUR packages (~15), one per line
+  official.txt                  Arch repo packages (~80), one per line
+  aur.txt                       AUR packages (~20), one per line
 
 scripts/
   lib.sh                        Shared helpers sourced by all scripts
   post-install.sh               Main automation (packages, configs, themes, services)
   transform.sh                  Convert existing Arch+Wayland system to Moonarch
-  install-themes.sh             Cursor theme installer (Sweet-cursors)
-  update.sh                     System updater (symlinked to moonarch-update)
+  update.sh                     Legacy wrapper — prints notice, forwards to moonarch-update
 
 defaults/
   xdg/                          System-wide XDG configs (deployed to /etc/xdg/)
@@ -117,7 +116,6 @@ defaults/
     foot/foot.ini                 Terminal: font, colors, keybinds
     dunst/dunstrc                 Notifications: geometry, colors, behavior
     kanshi/config                 Display profiles (empty, user-configured)
-    gtklock/                      Lock screen: config, UI layout, CSS
     stasis/stasis.rune            Idle manager: AC/battery power plans
     pipewire/                     Audio: RNNoise input denoising
     waypaper/config.ini           Wallpaper manager: backend, folder, transitions
@@ -178,7 +176,7 @@ greetd ─► niri (greeter instance) ─► moongreet ─► user authenticates
 | `Super+E` | File manager |
 | `Super+A` | Audio control (walker) |
 | `Super+N` | VPN manager |
-| `Super+Alt+L` | Session menu (wlogout) |
+| `Super+Alt+L` | Session menu (moonset) |
 | `Print` | Screenshot |
 | `Ctrl+Print` | Screenshot screen |
 | `Alt+Print` | Screenshot window |