Initial commit: DarkForge package repository (124 packages)

Package definitions for the complete DarkForge Linux system:
- core/  (67): base system, toolchain, kernel, utilities, dev tools
- extra/ (26): libraries, frameworks, drivers (nvidia-open, pipewire, mesa)
- desktop/ (19): Wayland stack, dwl compositor, terminals, applications
- gaming/ (12): Steam, Wine, Proton, gamemode, mangohud, PrismLauncher

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

gaming/mangohud/mangohud.toml

@@ -0,0 +1,20 @@
+[package]
+name = "mangohud"
+version = "0.7.3"
+description = "Vulkan/OpenGL overlay for monitoring FPS, temperatures"
+url = "https://github.com/flightlessmango/MangoHud"
+license = "MIT"
+
+[source]
+url = "https://github.com/flightlessmango/MangoHud/releases/download/v${version}/MangoHud-v${version}.tar.xz"
+sha256 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+
+[dependencies]
+run = ["glibc", "vulkan-loader", "dbus"]
+build = ["gcc", "meson", "ninja", "pkg-config", "python"]
+
+[build]
+system = "meson"
+configure = """meson setup build --prefix=/usr --buildtype=release -Dwith_xnvctrl=disabled"""
+make = """ninja -C build"""
+install = """DESTDIR=${PKG} ninja -C build install"""