Force software cursors on nouveau

Adapt the fix from PR #6161 to Quattro's per-user hardware setup and add coverage for detection, idempotency, and proprietary-driver handling.

install/user/all.sh

@@ -7,6 +7,7 @@ run_logged "$OMARCHY_INSTALL/user/hardware/asus/fix-audio-mixer.sh"
 run_logged "$OMARCHY_INSTALL/user/hardware/asus/fix-mic.sh"
 run_logged "$OMARCHY_INSTALL/user/hardware/framework/fix-f13-amd-audio-input.sh"
 run_logged "$OMARCHY_INSTALL/user/hardware/dell/xps13-text-scaling.sh"
+run_logged "$OMARCHY_INSTALL/user/hardware/fix-nouveau-cursor.sh"
 
 run_logged "$OMARCHY_INSTALL/user/default-keyring.sh"
 run_logged "$OMARCHY_INSTALL/user/mise.sh"

install/user/hardware/fix-nouveau-cursor.sh

@@ -0,0 +1,28 @@
+# Disable hardware cursors when the nouveau driver is in use.
+#
+# The nouveau DRM driver does not display the hardware cursor plane on many
+# older NVIDIA GPUs, leaving the mouse pointer invisible under Hyprland.
+# Skip the fix when the proprietary driver was configured: supported GPUs can
+# still use nouveau during installation before switching drivers on reboot.
+nvidia_config="${OMARCHY_NVIDIA_MODPROBE_CONFIG:-/etc/modprobe.d/nvidia.conf}"
+
+if [[ ! -f $nvidia_config ]] &&
+  omarchy-cmd-present lspci &&
+  LC_ALL=C lspci -k | grep -qi 'Kernel driver in use: nouveau'; then
+  looknfeel="$HOME/.config/hypr/looknfeel.lua"
+
+  if [[ -f $looknfeel ]] && ! grep -q 'no_hardware_cursors' "$looknfeel"; then
+    echo "Detected nouveau driver. Forcing software cursors so the mouse pointer stays visible."
+
+    cat >>"$looknfeel" <<'EOF'
+
+-- nouveau does not display the hardware cursor plane on many older NVIDIA GPUs,
+-- leaving the pointer invisible on the physical display. Render it in software.
+hl.config({
+  cursor = {
+    no_hardware_cursors = true,
+  },
+})
+EOF
+  fi
+fi