Refactor build script for custom ISO creation and update hardware configuration

- Replaced OS-specific build method with a custom ISO builder in the build-for-hardware.sh script.
- Updated output file naming to reflect the correct Alpine version in the build process.
- Adjusted build dates in hardware configuration files for HP ProDesk, merged, and Start9 Pure profiles to the latest timestamp.

image-recipe/create-usb-boot.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+# Create a proper bootable USB for HP ProDesk
+# This formats the USB and installs Alpine in a way that works on real hardware
+
+set -e
+
+USB_DEVICE="${1:-/dev/disk4}"
+ISO_FILE="/Users/dorian/Projects/archy/image-recipe/results/archipelago-3.19-hp-prodesk-uefi-x86_64.iso"
+
+if [ ! -f "$ISO_FILE" ]; then
+    echo "❌ ISO file not found: $ISO_FILE"
+    exit 1
+fi
+
+echo "⚠️  WARNING: This will ERASE all data on $USB_DEVICE"
+echo "Press Ctrl+C to cancel, or Enter to continue..."
+read
+
+echo "📀 ISO: $ISO_FILE"
+echo "💾 USB: $USB_DEVICE"
+echo ""
+
+# Unmount
+echo "🔓 Unmounting USB..."
+diskutil unmountDisk "$USB_DEVICE" || true
+
+# Create hybrid ISO (makes it bootable from USB on both BIOS and UEFI)
+echo "🔧 Creating hybrid boot support..."
+if command -v isohybrid >/dev/null 2>&1; then
+    # If syslinux is installed
+    cp "$ISO_FILE" "/tmp/hybrid-archipelago.iso"
+    isohybrid -u "/tmp/hybrid-archipelago.iso"
+    ISO_FILE="/tmp/hybrid-archipelago.iso"
+    echo "✅ Hybrid boot support added"
+else
+    echo "ℹ️  isohybrid not available, using direct ISO write"
+fi
+
+# Write to USB using dd
+echo "💿 Writing ISO to USB..."
+echo "   This will take 2-3 minutes..."
+sudo dd if="$ISO_FILE" of="${USB_DEVICE/disk/rdisk}" bs=1m status=progress
+
+# Sync
+echo "🔄 Syncing..."
+sync
+
+# Clean up
+rm -f "/tmp/hybrid-archipelago.iso"
+
+echo ""
+echo "✅ USB boot device created successfully!"
+echo ""
+echo "📋 Next steps:"
+echo "   1. Check HP ProDesk BIOS settings:"
+echo "      - Disable Secure Boot"
+echo "      - Enable USB Boot"
+echo "      - Try Legacy BIOS mode first"
+echo "   2. Boot from USB"
+echo "   3. Should see Alpine login prompt"
+echo ""