docs: update README, fix build.rs comment, correct gtk-theme in config

README: replace LD_PRELOAD with MOONGREET_NO_LAYER_SHELL env var,
add missing features (GPU blur, journal logging, password wiping).
build.rs: remove wallpaper.jpg reference.
moongreet.toml: correct gtk-theme to Colloid-Grey-Dark-Catppuccin.

README.md

@@ -13,9 +13,12 @@ Part of the Moonarch ecosystem.
 - **Power actions** — Reboot / Shutdown via `loginctl`
 - **Layer Shell** — Fullscreen via gtk4-layer-shell (TOP layer)
 - **Multi-monitor** — Greeter on primary, wallpaper on all monitors
+- **GPU blur** — Background blur via GskBlurNode (shared cache across monitors)
 - **i18n** — German and English (auto-detected from system locale)
 - **Faillock warning** — Warns after 2 failed attempts, locked message after 3
 - **Fingerprint** — fprintd support via greetd multi-stage PAM (configurable)
+- **Journal logging** — `journalctl -t moongreet`, debug level via `MOONGREET_DEBUG` env var
+- **Password wiping** — Zeroize on drop
 
 ## Requirements
 
@@ -66,8 +69,8 @@ cargo test
 # Build release
 cargo build --release
 
-# Run locally (without greetd, needs LD_PRELOAD for layer-shell)
-LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moongreet
+# Run locally (without greetd, disables layer-shell)
+MOONGREET_NO_LAYER_SHELL=1 ./target/release/moongreet
 ```
 
 ## License

build.rs

@@ -1,5 +1,5 @@
 // ABOUTME: Build script for compiling GResource bundle.
-// ABOUTME: Bundles style.css, wallpaper.jpg, and default-avatar.svg into the binary.
+// ABOUTME: Bundles style.css and default-avatar.svg into the binary.
 
 fn main() {
     glib_build_tools::compile_resources(

config/moongreet.toml

@@ -5,4 +5,4 @@
 # Absolute path to wallpaper image
 background = "/usr/share/backgrounds/wallpaper.jpg"
 # GTK theme for the greeter UI
-gtk-theme = "Colloid-Catppuccin"
+gtk-theme = "Colloid-Grey-Dark-Catppuccin"