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/games/fps/xonotic/recipe.toml

@@ -0,0 +1,17 @@
+#TODO missing script for "make", see https://gitlab.com/xonotic/xonotic/-/wikis/Compiling
+[source]
+git = "https://gitlab.com/xonotic/xonotic"
+rev = "0100f2c8d7947267292db66714c1af55039809ad"
+[build]
+template = "custom"
+dependencies = [
+    "libgmp",
+    "sdl2",
+    "libjpeg",
+    "libpng",
+    "freetype2",
+    "libogg",
+    "libvorbis",
+    "curl",
+    "rsync",
+]