sway: replace swaylock with gtklock, Star Wars theme lockscreen

Switch lockscreen from swaylock to gtklock. CSS styled with Star Wars
yellow (#FFE81F) on near-black background, cover-scaled wallpaper injected
at runtime via temp CSS to avoid path expansion issues in gtklock config.
Update sway background wallpaper to darth-vader-sam.jpg.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dotfiles/desktop/.config/gtklock/config.ini

@@ -0,0 +1 @@
+[main]

dotfiles/desktop/.config/gtklock/style.css

@@ -0,0 +1,49 @@
+* {
+    font-family: "NotoSans NF", sans-serif;
+    color: #FFE81F;
+}
+
+window {
+    background-color: #00000A;
+}
+
+box {
+    background-color: transparent;
+}
+
+entry {
+    background-color: rgba(0, 0, 10, 0.6);
+    color: #FFE81F;
+    border: 1px solid #FFE81F;
+    border-radius: 0;
+    padding: 8px 16px;
+    caret-color: #FFE81F;
+    min-width: 320px;
+    font-weight: bold;
+    font-style: italic;
+}
+
+entry > text {
+    color: #FFE81F;
+}
+
+entry:focus {
+    border-color: #FFE81F;
+    box-shadow: 0 0 8px rgba(255, 232, 31, 0.5);
+}
+
+entry.error {
+    border-color: #c7162b;
+    box-shadow: 0 0 8px rgba(199, 22, 43, 0.6);
+    color: #c7162b;
+}
+
+label {
+    color: #FFE81F;
+    font-weight: bold;
+    font-style: italic;
+}
+
+label.error {
+    color: #c7162b;
+}

dotfiles/desktop/.config/sway/config

@@ -35,7 +35,7 @@ input * {
 seat * xcursor_theme Yaru 24
 
 # Outputs
-output * bg ~/.config/sway/wallpapers/wallpaper-161664.jpg center
+output * bg ~/.config/sway/wallpapers/darth-vader-sam.jpg center
 
 # SwayFX effects
 corner_radius 8

dotfiles/desktop/.config/sway/scripts/lockscreen

@@ -1,17 +1,11 @@
 #!/bin/sh
 
-exec swaylock \
-    --image "$HOME/.config/sway/wallpapers/maxresdefault.jpg" \
-    --scaling fill \
-    --indicator-radius 100 \
-    --ring-color 2f4058 \
-    --inside-color 1f1f28 \
-    --line-color 00000000 \
-    --separator-color 3a3a46 \
-    --key-hl-color 6daeea \
-    --bs-hl-color c7162b \
-    --ring-ver-color 4a90d9 \
-    --inside-ver-color 1f1f28 \
-    --ring-wrong-color c7162b \
-    --inside-wrong-color 1f1f28 \
-    --text-color d0d0d0
+WALLPAPER="$HOME/.config/sway/wallpapers/maxresdefault.jpg"
+STYLE_TMP=$(mktemp /tmp/gtklock-XXXXXX.css)
+
+cat "$HOME/.config/gtklock/style.css" > "$STYLE_TMP"
+printf '\nwindow { background-image: url("file://%s"); background-size: cover; background-position: center; background-repeat: no-repeat; }\n' \
+    "$WALLPAPER" >> "$STYLE_TMP"
+
+gtklock --style "$STYLE_TMP"
+rm -f "$STYLE_TMP"