fix: prevent black lock screen on dual-GPU system

- AQ_DRM_DEVICES=/dev/dri/card0 forces Aquamarine to use only the
  Intel iGPU, avoiding EGL_BAD_MATCH errors from the NVIDIA RTX 3060
  after VT/DPMS cycles (page-flip lockups, black display)
- lock.sh: guard against duplicate hyprlock instances (second instance
  steals surfaces, leaves screen black)
- lid-close.sh: same guard for laptop
- wake-display.sh: conditional DPMS cycle (only when display is off)
  to restore hyprlock surfaces without flicker
- unstick-display.sh: emergency recovery script for tty3

hypr/hyprland.conf

@@ -15,6 +15,11 @@ env = HYPRCURSOR_SIZE,24
 env = QT_QPA_PLATFORMTHEME,qt5ct
 env = HYPRSHOT_DIR,Screenshots
 
+# Force Aquamarine to use only the Intel iGPU for display.
+# The NVIDIA RTX 3060 is also present but causes EGL_BAD_MATCH errors and page-flip
+# lockups after VT/DPMS cycles (multi-GPU buffer ownership fights).
+env = AQ_DRM_DEVICES,/dev/dri/card0
+
 ################
 ### MONITORS ###
 ################
@@ -187,7 +192,7 @@ input {
     kb_layout = us,se,kr
     kb_variant = dvorak,dvorak,
     kb_model =
-    kb_options = grp:win_space_toggle,grp:alt_r_toggle
+    kb_options = grp:win_space_toggle,grp:toggle
     kb_rules =
 
     follow_mouse = 0