Add plymouth installer and migration

install/plymouth.sh

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+#!/usr/bin/env bash
+
+# Install Plymouth package
+echo "Installing Plymouth..."
+yay -S --noconfirm --needed plymouth
+
+# Skip if plymouth already exists for some reason
+if ! grep -q "plymouth" /etc/mkinitcpio.conf; then
+  # Backup original mkinitcpio.conf just in case
+  backup_timestamp=$(date +"%Y%m%d%H%M%S")
+  sudo cp /etc/mkinitcpio.conf "/etc/mkinitcpio.conf.bak.${backup_timestamp}"
+
+  # Add plymouth to HOOKS array. Should be added:
+  # - After 'base' and 'udev' (or 'systemd' if using systemd hook)
+  # - Before 'encrypt' or 'sd-encrypt' if present
+
+  # Use sed to add plymouth in-place
+  if grep -q "systemd" /etc/mkinitcpio.conf; then
+    # Add after systemd
+    sudo sed -i '/^HOOKS=/s/systemd/systemd plymouth/' /etc/mkinitcpio.conf
+  elif grep -q "udev" /etc/mkinitcpio.conf; then
+    # Add after udev
+    sudo sed -i '/^HOOKS=/s/udev/udev plymouth/' /etc/mkinitcpio.conf
+  else
+    # Fallback: add after base
+    sudo sed -i '/^HOOKS=/s/base/base plymouth/' /etc/mkinitcpio.conf
+  fi
+fi
+
+# Regenerate initramfs
+sudo mkinitcpio -P
+
+# Add kernel parameters for Plymouth (systemd-boot only)
+if [ -d "/boot/loader/entries" ]; then
+  echo "Detected systemd-boot"
+
+  for entry in /boot/loader/entries/*.conf; do
+    if [ -f "$entry" ]; then
+      # Skip fallback entries
+      if [[ "$(basename "$entry")" == *"fallback"* ]]; then
+        echo "Skipped: $(basename "$entry") (fallback entry)"
+        continue
+      fi
+
+      # Skip if splash it already present for some reason
+      if ! grep -q "splash" "$entry"; then
+        sudo sed -i '/^options/ s/$/ splash quiet/' "$entry"
+      else
+        echo "Skipped: $(basename "$entry") (splash already present)"
+      fi
+    fi
+  done
+else
+  echo ""
+  echo "systemd-boot not detected. Please manually add these kernel parameters:"
+  echo "  - splash (to see the graphical splash screen)"
+  echo "  - quiet (for silent boot)"
+  echo ""
+fi
+
+# Touch .plymouth-sync-needed to signal rebuild on shutdown / reboot
+touch "$HOME/.config/omarchy/.plymouth-sync-needed"
+
+# Create the systemd service
+sudo tee /etc/systemd/system/omarchy-plymouth-shutdown.service >/dev/null <<EOF
+[Unit]
+Description=Sync Plymouth Theme on Shutdown
+DefaultDependencies=yes
+After=network-online.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/bin/true
+ExecStop=$HOME/.local/share/omarchy/bin/omarchy-plymouth-shutdown-sync
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+# Reload systemd and enable the service
+sudo systemctl daemon-reload
+sudo systemctl enable omarchy-plymouth-shutdown.service
+sudo systemctl start omarchy-plymouth-shutdown.service

migrations/1751743990.sh

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+#!/usr/bin/env bash
+
+# Run Plymouth installation script
+echo "Install Plymouth splash screen"
+bash "$HOME/.local/share/omarchy/install/plymouth.sh"
+