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/performance_tests.sh

@@ -0,0 +1,124 @@
+#!/bin/bash
+set -e
+
+# Colors for output
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+YELLOW='\033[0;33m'
+NC='\033[0m' # No Color
+
+# Test directory
+TEST_DIR="/tmp/rfs-performance-tests"
+CACHE_DIR="$TEST_DIR/cache"
+SOURCE_DIR="$TEST_DIR/source"
+DEST_DIR_SERIAL="$TEST_DIR/destination-serial"
+DEST_DIR_PARALLEL="$TEST_DIR/destination-parallel"
+FLIST_PATH="$TEST_DIR/perf-test.fl"
+
+# Store URL - using a local directory store for testing
+STORE_DIR="$TEST_DIR/store"
+STORE_URL="dir://$STORE_DIR"
+
+# Number of files and file size for testing
+NUM_FILES=100
+FILE_SIZE_MB=1
+
+# Clean up function
+cleanup() {
+    echo "Cleaning up test directories..."
+    rm -rf "$TEST_DIR"
+}
+
+# Setup function
+setup() {
+    echo "Setting up test directories..."
+    mkdir -p "$TEST_DIR" "$CACHE_DIR" "$SOURCE_DIR" "$DEST_DIR_SERIAL" "$DEST_DIR_PARALLEL" "$STORE_DIR"
+    
+    echo -e "${YELLOW}Creating $NUM_FILES test files of ${FILE_SIZE_MB}MB each...${NC}"
+    for i in $(seq 1 $NUM_FILES); do
+        dd if=/dev/urandom of="$SOURCE_DIR/file_$i.bin" bs=1M count=$FILE_SIZE_MB status=none
+        echo -ne "\rCreated $i/$NUM_FILES files"
+    done
+    echo -e "\nTest files created successfully"
+}
+
+# Function to measure execution time
+measure_time() {
+    local start_time=$(date +%s.%N)
+    "$@"
+    local end_time=$(date +%s.%N)
+    echo "$(echo "$end_time - $start_time" | bc)"
+}
+
+# Test pack performance
+test_pack_performance() {
+    echo -e "\n${GREEN}Testing pack performance...${NC}"
+    
+    local pack_time=$(measure_time rfs pack -m "$FLIST_PATH" -s "$STORE_URL" "$SOURCE_DIR")
+    
+    echo -e "Pack time: ${YELLOW}$pack_time seconds${NC}"
+    
+    # Verify the flist was created
+    if [ ! -f "$FLIST_PATH" ]; then
+        echo -e "${RED}Flist file was not created${NC}"
+        return 1
+    fi
+    
+    echo "Flist created successfully at $FLIST_PATH"
+    return 0
+}
+
+# Test unpack performance with and without parallel download
+test_unpack_performance() {
+    echo -e "\n${GREEN}Testing unpack performance...${NC}"
+    
+    # Clear cache directory to ensure fair comparison
+    rm -rf "$CACHE_DIR"
+    mkdir -p "$CACHE_DIR"
+    
+    # Test with parallel download (default)
+    echo -e "${YELLOW}Testing with parallel download...${NC}"
+    local parallel_time=$(measure_time rfs unpack -m "$FLIST_PATH" -c "$CACHE_DIR" "$DEST_DIR_PARALLEL")
+    
+    # Clear cache directory again
+    rm -rf "$CACHE_DIR"
+    mkdir -p "$CACHE_DIR"
+    
+    # Temporarily disable parallel download by setting PARALLEL_DOWNLOAD to 1
+    echo -e "${YELLOW}Testing with serial download...${NC}"
+    local serial_time=$(measure_time env RFS_PARALLEL_DOWNLOAD=1 rfs unpack -m "$FLIST_PATH" -c "$CACHE_DIR" "$DEST_DIR_SERIAL")
+    
+    echo -e "Serial unpack time: ${YELLOW}$serial_time seconds${NC}"
+    echo -e "Parallel unpack time: ${YELLOW}$parallel_time seconds${NC}"
+    
+    # Calculate speedup
+    local speedup=$(echo "scale=2; $serial_time / $parallel_time" | bc)
+    echo -e "Speedup: ${GREEN}${speedup}x${NC}"
+    
+    # Verify files were unpacked correctly
+    if ! diff -r "$DEST_DIR_SERIAL" "$DEST_DIR_PARALLEL" > /dev/null; then
+        echo -e "${RED}Unpacked files don't match between serial and parallel methods${NC}"
+        return 1
+    fi
+    
+    echo "Files unpacked successfully and match between methods"
+    return 0
+}
+
+# Main test function
+main() {
+    # Register cleanup on exit
+    trap cleanup EXIT
+    
+    # Setup test environment
+    setup
+    
+    # Run performance tests
+    test_pack_performance
+    test_unpack_performance
+    
+    echo -e "\n${GREEN}All performance tests completed!${NC}"
+}
+
+# Run the main function
+main