Red Bear OS — microkernel OS in Rust, based on Redox

Derivative of Redox OS (https://www.redox-os.org) adding:
- AMD GPU driver (amdgpu) via LinuxKPI compat layer
- ext4 filesystem support (ext4d scheme daemon)
- ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG)
- Custom branding (hostname, os-release, boot identity)

Build system is full upstream Redox with RBOS overlay in local/.
Patches for kernel, base, and relibc are symlinked from local/patches/
and protected from make clean/distclean. Custom recipes live in
local/recipes/ with symlinks into the recipes/ search path.

Build:  make all CONFIG_NAME=redbear-full
Sync:   ./local/scripts/sync-upstream.sh

recipes/wip/science/gaia-sky/recipe.toml

@@ -0,0 +1,12 @@
+#TODO not compiled or tested
+[source]
+tar = "https://gaia.ari.uni-heidelberg.de/gaiasky/releases/latest/gaiasky-3.6.4-2.3bfeec0f9.tar.gz"
+[build]
+template = "custom"
+script = """
+mkdir -pv "${COOKBOOK_STAGE}"/usr/share/gaia-sky
+mkdir -pv "${COOKBOOK_STAGE}"/usr/bin
+cp -rv "${COOKBOOK_SOURCE}"/* "${COOKBOOK_STAGE}"/usr/share/gaia-sky
+echo "#!/usr/bin/env bash \n /usr/share/gaia-sky" > "${COOKBOOK_STAGE}"/usr/bin/gaia-sky
+chmod a+x "${COOKBOOK_STAGE}"/usr/bin/gaia-sky
+"""