Enhance README and build scripts for hardware-specific optimizations

- Updated README.md to clarify development setup for macOS/Docker and added production build instructions for specific hardware.
- Introduced new build scripts for optimized OS images targeting Start9 Server Pure, HP ProDesk 400 G4 DM, and Dell OptiPlex.
- Enhanced Dockerfile to specify platform compatibility and improved Alpine profile for Archipelago builds.
- Updated configuration files and init scripts to support new hardware profiles and ensure proper service management.

image-recipe/alpine-profile/overlay-start9-pure/etc/archipelago/hardware.toml

@@ -0,0 +1,26 @@
+# Hardware profile for Start9 Server Pure
+# Auto-generated during build
+
+[hardware]
+target = "start9-pure"
+name = "Start9 Server Pure"
+cpu_vendor = "intel"
+cpu_model = "i7-10710U"
+min_ram = "32GB"
+min_storage = "2TB"
+architecture = "x86_64"
+
+[optimizations]
+enabled = intel-graphics intel-networking nvme-ssd
+
+[network]
+interfaces = "1x Gigabit Ethernet"
+
+[usb]
+ports = "4x USB 3.0, 2x USB 2.0, 1x USB-C 3.1"
+
+[build]
+version = "0.1.0"
+alpine_version = "3.19"
+build_date = "2026-01-31T19:35:38Z"
+build_type = "iso"