feat: Create minimal Zero-OS initramfs with console support

- Fixed build system to clone source repositories instead of downloading binaries
- Enhanced scripts/fetch-github.sh with proper git repo cloning and branch handling
- Updated scripts/compile-components.sh for RFS compilation with build-binary feature
- Added minimal firmware installation for essential network drivers (73 modules)
- Created comprehensive zinit configuration set (15 config files including getty)
- Added util-linux package for getty/agetty console support
- Optimized package selection for minimal 27MB initramfs footprint
- Successfully builds bootable vmlinuz.efi with embedded initramfs
- Confirmed working: VM boot, console login, network drivers, zinit init system

Components:
- initramfs.cpio.xz: 27MB compressed minimal Zero-OS image
- vmlinuz.efi: 35MB bootable kernel with embedded initramfs
- Complete Zero-OS toolchain: zinit, rfs, mycelium compiled from source

components/rfs/tests/Makefile

@@ -0,0 +1,33 @@
+.PHONY: all e2e performance unit integration clean
+
+all: unit integration e2e performance
+
+# Run unit tests
+unit:
+	@echo "Running unit tests..."
+	cargo test --lib
+
+# Run integration tests
+integration:
+	@echo "Running integration tests..."
+	cargo test --test docker_test --test parallel_download_test
+
+# Run end-to-end tests
+e2e:
+	@echo "Running end-to-end tests..."
+	chmod +x e2e_tests.sh
+	./e2e_tests.sh
+
+	chmod +x e2e_tests_updated.sh
+	./e2e_tests_updated.sh
+
+# Run performance tests
+performance:
+	@echo "Running performance tests..."
+	chmod +x performance_tests.sh
+	./performance_tests.sh
+
+# Clean test artifacts
+clean:
+	@echo "Cleaning test artifacts..."
+	rm -rf /tmp/rfs-e2e-tests /tmp/rfs-performance-tests /tmp/rfs-upload-download-tests