Initial commit: SkyOS source code

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

installer/Makefile

@@ -0,0 +1,11 @@
+CC      = gcc
+CFLAGS  = -O2 -Wall -Wextra $(shell pkg-config --cflags x11 xft fontconfig)
+LDFLAGS = $(shell pkg-config --libs   x11 xft fontconfig)
+
+all: skyinstall-gui
+
+skyinstall-gui: skyinstall-gui.c
+	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
+
+clean:
+	rm -f skyinstall-gui