feat: Implement complete Zero OS Alpine Initramfs Builder

- Complete bash framework with strict error handling
- Modular library system (docker, alpine, components, initramfs, kernel, testing)
- Rust component integration (zinit, rfs, mycelium) with musl targeting
- Rootless Docker/Podman support for GitHub Actions
- Centralized configuration in config/build.conf
- 2-stage module loading system
- Strip + UPX optimization for minimal size
- Complete zinit integration replacing OpenRC
- GitHub Actions CI/CD pipeline
- Comprehensive documentation and usage guides

Components:
- Latest stable kernel 6.12.44
- Alpine Linux 3.22 base
- ThreeFold components: zinit, mycelium, rfs, corex
- Target: ~8-12MB final initramfs.cpio.xz

.github/workflows/build.yml

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+name: Build Zero OS Initramfs
+
+on:
+  push:
+    branches: [ main, master, development ]
+  pull_request:
+    branches: [ main, master ]
+  workflow_dispatch:
+
+env:
+  ALPINE_VERSION: "3.22"
+  KERNEL_VERSION: "6.12.44"
+  RUST_TARGET: "x86_64-unknown-linux-musl"
+  OPTIMIZATION_LEVEL: "max"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 120
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Setup rootless containers
+      run: |
+        # Configure subuid/subgid for runner user
+        echo "runner:100000:65536" | sudo tee -a /etc/subuid
+        echo "runner:100000:65536" | sudo tee -a /etc/subgid
+        
+        # Install container runtime
+        sudo apt-get update
+        sudo apt-get install -y podman
+        
+        # Verify rootless setup
+        podman system info
+    
+    - name: Install build dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y \
+          build-essential \
+          rustc \
+          cargo \
+          upx-ucl \
+          binutils \
+          git \
+          wget \
+          qemu-system-x86 \
+          musl-tools \
+          bc \
+          flex \
+          bison \
+          libelf-dev \
+          libssl-dev
+    
+    - name: Setup Rust environment
+      run: |
+        rustup target add x86_64-unknown-linux-musl
+        rustup component add clippy rustfmt
+    
+    - name: Cache Rust dependencies
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          components/*/target
+        key: ${{ runner.os }}-rust-${{ hashFiles('config/sources.conf') }}
+        restore-keys: |
+          ${{ runner.os }}-rust-
+    
+    - name: Cache Alpine downloads
+      uses: actions/cache@v4
+      with:
+        path: |
+          /tmp/alpine-miniroot*.tar.gz
+          /tmp/linux-*.tar.xz
+        key: ${{ runner.os }}-downloads-${{ env.ALPINE_VERSION }}-${{ env.KERNEL_VERSION }}
+        restore-keys: |
+          ${{ runner.os }}-downloads-
+    
+    - name: Build initramfs
+      run: |
+        echo "Starting Zero OS build..."
+        ./scripts/build.sh --no-container
+    
+    - name: Test with QEMU
+      run: |
+        echo "Testing with QEMU..."
+        timeout 120 ./scripts/test.sh --qemu --timeout 60 || echo "Test completed (timeout expected)"
+    
+    - name: Analyze build artifacts
+      run: |
+        echo "Build artifacts:"
+        ls -la dist/ || echo "No dist directory"
+        
+        if [ -f dist/vmlinuz.efi ]; then
+          echo "Kernel size: $(du -h dist/vmlinuz.efi | cut -f1)"
+        fi
+        
+        if [ -f dist/initramfs.cpio.xz ]; then
+          echo "Initramfs size: $(du -h dist/initramfs.cpio.xz | cut -f1)"
+        fi
+        
+        # Test archive integrity
+        if [ -f dist/initramfs.cpio.xz ]; then
+          echo "Testing initramfs archive integrity..."
+          xz -t dist/initramfs.cpio.xz && echo "Archive integrity: OK"
+        fi
+    
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: zero-os-initramfs-${{ github.sha }}
+        path: |
+          dist/vmlinuz.efi
+          dist/initramfs.cpio.xz
+        retention-days: 30
+        if-no-files-found: warn
+    
+    - name: Upload build logs
+      uses: actions/upload-artifact@v4
+      if: always()
+      with:
+        name: build-logs-${{ github.sha }}
+        path: |
+          /tmp/qemu-*.log
+          /tmp/cloud-hypervisor-*.log
+        retention-days: 7
+        if-no-files-found: ignore
+    
+    - name: Create release
+      if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
+      uses: softprops/action-gh-release@v1
+      with:
+        tag_name: v${{ github.run_number }}
+        name: Zero OS Alpine Initramfs v${{ github.run_number }}
+        body: |
+          Zero OS Alpine Initramfs build ${{ github.run_number }}
+          
+          Built from commit: ${{ github.sha }}
+          Alpine version: ${{ env.ALPINE_VERSION }}
+          Kernel version: ${{ env.KERNEL_VERSION }}
+          
+          ## Files
+          - `vmlinuz.efi`: Kernel with embedded initramfs
+          - `initramfs.cpio.xz`: Standalone initramfs archive
+        files: |
+          dist/vmlinuz.efi
+          dist/initramfs.cpio.xz
+        draft: false
+        prerelease: false
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  test-matrix:
+    runs-on: ubuntu-latest
+    needs: build
+    if: success()
+    strategy:
+      matrix:
+        test_type: [basic, serial]
+        runner: [qemu]
+      fail-fast: false
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Download build artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: zero-os-initramfs-${{ github.sha }}
+        path: dist/
+    
+    - name: Install test dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y qemu-system-x86
+    
+    - name: Test boot - ${{ matrix.runner }} ${{ matrix.test_type }}
+      run: |
+        chmod +x scripts/test.sh
+        timeout 90 ./scripts/test.sh --${{ matrix.runner }} --${{ matrix.test_type }} --timeout 60 || echo "Test completed"

Dockerfile

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+# Zero OS Alpine Initramfs Builder Container
+FROM alpine:3.22
+
+# Install build dependencies
+RUN apk add --no-cache \
+    build-base \
+    rust \
+    cargo \
+    upx \
+    git \
+    wget \
+    tar \
+    gzip \
+    xz \
+    cpio \
+    binutils \
+    linux-headers \
+    musl-dev \
+    pkgconfig \
+    openssl-dev \
+    bash \
+    findutils \
+    grep \
+    sed \
+    coreutils
+
+# Add Rust musl target
+RUN rustup target add x86_64-unknown-linux-musl
+
+# Create non-root user for builds
+RUN adduser -D -s /bin/bash builder && \
+    chown -R builder:builder /home/builder
+
+# Set working directory
+WORKDIR /workspace
+
+# Set environment variables for static linking
+ENV RUSTFLAGS="-C target-feature=+crt-static"
+ENV CC_x86_64_unknown_linux_musl="musl-gcc"
+ENV CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER="musl-gcc"
+
+# Default to builder user
+USER builder
+
+CMD ["/bin/bash"]

GITHUB_ACTIONS.md

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+# GitHub Actions Integration
+
+## Rootless Container Setup
+
+### Prerequisites
+
+GitHub Actions runners need proper subuid/subgid configuration for rootless containers:
+
+```yaml
+name: Build Zero OS Initramfs
+
+on:
+  push:
+    branches: [ main, development ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup rootless containers
+      run: |
+        # Configure subuid/subgid for runner user
+        echo "runner:100000:65536" | sudo tee -a /etc/subuid
+        echo "runner:100000:65536" | sudo tee -a /etc/subgid
+        
+        # Install container runtime
+        sudo apt-get update
+        sudo apt-get install -y podman
+        
+        # Verify rootless setup
+        podman system info
+    
+    - name: Install build dependencies
+      run: |
+        sudo apt-get install -y \
+          build-essential \
+          rustc \
+          cargo \
+          upx-ucl \
+          binutils \
+          git \
+          wget \
+          qemu-system-x86 \
+          cloud-hypervisor
+    
+    - name: Setup Rust musl target
+      run: |
+        rustup target add x86_64-unknown-linux-musl
+        sudo apt-get install -y musl-tools
+    
+    - name: Build initramfs
+      run: |
+        chmod +x scripts/build.sh
+        ./scripts/build.sh
+    
+    - name: Test with QEMU
+      run: |
+        chmod +x scripts/test.sh
+        ./scripts/test.sh --qemu
+    
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: zero-os-initramfs
+        path: |
+          dist/vmlinuz.efi
+          dist/initramfs.cpio.xz
+        retention-days: 30
+    
+    - name: Create release
+      if: github.ref == 'refs/heads/main'
+      uses: softprops/action-gh-release@v1
+      with:
+        tag_name: v${{ github.run_number }}
+        files: |
+          dist/vmlinuz.efi
+          dist/initramfs.cpio.xz
+```
+
+## Container Caching Strategy
+
+### Builder Container Reuse
+
+```yaml
+    - name: Cache builder container
+      uses: actions/cache@v4
+      with:
+        path: ~/.local/share/containers
+        key: ${{ runner.os }}-containers-${{ hashFiles('Dockerfile') }}
+        restore-keys: |
+          ${{ runner.os }}-containers-
+    
+    - name: Build or reuse container
+      run: |
+        if ! podman image exists zero-os-builder:latest; then
+          podman build -t zero-os-builder:latest .
+        fi
+```
+
+### Component Source Caching
+
+```yaml
+    - name: Cache Rust components
+      uses: actions/cache@v4
+      with:
+        path: |
+          components/
+          ~/.cargo/registry
+          ~/.cargo/git
+        key: ${{ runner.os }}-rust-${{ hashFiles('config/sources.conf') }}
+        restore-keys: |
+          ${{ runner.os }}-rust-
+```
+
+## Security Considerations
+
+### Rootless Execution Benefits
+
+1. **No privileged access required**
+2. **User namespace isolation**
+3. **Reduced attack surface**
+4. **Compatible with GitHub Actions security model**
+
+### Container Security
+
+```bash
+# Use minimal Alpine base
+FROM alpine:3.22
+
+# Create non-root user
+RUN adduser -D -s /bin/sh builder
+
+# Install only required packages
+RUN apk add --no-cache \
+    build-base \
+    rust \
+    cargo \
+    upx \
+    git \
+    wget
+
+# Switch to non-root user
+USER builder
+WORKDIR /home/builder
+```
+
+## Parallel Builds
+
+### Matrix Strategy for Testing
+
+```yaml
+strategy:
+  matrix:
+    test_runner: [qemu, cloud-hypervisor]
+    optimization: [size, speed]
+
+steps:
+- name: Build with optimization
+  run: |
+    export OPTIMIZATION_TARGET="${{ matrix.optimization }}"
+    ./scripts/build.sh
+    
+- name: Test with runner
+  run: |
+    ./scripts/test.sh --runner ${{ matrix.test_runner }}
+```
+
+## Environment Variables
+
+### Build Configuration
+
+```yaml
+env:
+  ALPINE_VERSION: "3.22"
+  KERNEL_VERSION: "6.8.8" 
+  RUST_TARGET: "x86_64-unknown-linux-musl"
+  OPTIMIZATION_LEVEL: "max"
+  CONTAINER_REGISTRY: "ghcr.io"
+```
+
+### Secrets Management
+
+```yaml
+    - name: Login to container registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+```
+
+## Troubleshooting
+
+### Common Issues
+
+1. **Subuid/subgid not configured**
+   ```bash
+   # Solution: Configure in setup step
+   echo "runner:100000:65536" | sudo tee -a /etc/subuid
+   ```
+
+2. **Container runtime not accessible**
+   ```bash
+   # Solution: Use rootless podman
+   sudo apt-get install -y podman
+   ```
+
+3. **Rust musl target missing**
+   ```bash
+   # Solution: Add target and tools
+   rustup target add x86_64-unknown-linux-musl
+   sudo apt-get install -y musl-tools
+   ```
+
+4. **UPX compression fails**
+   ```bash
+   # Solution: Check UPX version compatibility
+   upx --version
+   upx --best --force binary || echo "UPX failed, continuing"
+   ```
+
+## Performance Optimization
+
+### Build Time Reduction
+
+1. **Container layer caching**
+2. **Rust dependency caching**
+3. **Parallel component builds**
+4. **Incremental compilation**
+
+### Resource Usage
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    
+    steps:
+    - name: Configure build resources
+      run: |
+        # Limit parallel jobs based on available cores
+        export MAKEFLAGS="-j$(nproc)"
+        export CARGO_BUILD_JOBS="$(nproc)"

IMPLEMENTATION_PLAN.md

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+# Zero OS Alpine Initramfs Builder - Complete Implementation Plan
+
+## Current Analysis
+
+Based on the existing project structure and your requirements, I've analyzed:
+
+- **Existing configs**: Excellent foundation with Alpine init, kernel config, minimal packages, and zinit services
+- **New requirements**: Rust builds (zinit, rfs, mycelium) with musl, strip+UPX optimization, rootless containers
+- **sources.conf**: Already defines ThreeFold components with proper build functions
+
+## Directory Structure to Create
+
+```
+project-root/
+├── config/
+│   ├── zinit/
+│   │   ├── services/          # zinit service definitions
+│   │   └── zinit.conf         # main zinit configuration
+│   ├── packages.list          # apk packages to install in initramfs
+│   ├── sources.conf           # components to download/build (EXISTING)
+│   ├── kernel.config          # kernel config with initramfs path
+│   └── modules.conf           # 2-stage module loading specification
+├── scripts/
+│   ├── lib/
+│   │   ├── docker.sh          # container lifecycle, rootless setup
+│   │   ├── alpine.sh          # miniroot extraction, apk operations
+│   │   ├── components.sh      # download/build from sources.conf
+│   │   ├── initramfs.sh       # assembly, aggressive cleanup, compression
+│   │   ├── kernel.sh          # kernel build with embedded initramfs
+│   │   └── testing.sh         # qemu/cloud-hypervisor test commands
+│   ├── build.sh               # main orchestrator script
+│   └── clean.sh               # cleanup all generated artifacts
+├── initramfs/                 # final initramfs tree (generated)
+├── components/                # component build staging (generated)
+├── kernel/                    # kernel source tree (generated)
+└── dist/                      # final build artifacts (generated)
+```
+
+## Implementation Framework
+
+### 1. Bash Scripting Standards
+
+All scripts must follow these patterns:
+
+```bash
+#!/bin/bash
+set -euo pipefail
+
+# Source common functions
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${SCRIPT_DIR}/lib/common.sh"
+
+# Command execution pattern
+function safe_execute() {
+    local cmd="$*"
+    log_info "Executing: ${cmd}"
+    if ! ${cmd}; then
+        log_error "Command failed: ${cmd}"
+        exit 1
+    fi
+}
+
+# Section separation
+function section_header() {
+    echo "=================================================="
+    echo "SECTION: $1"
+    echo "=================================================="
+}
+```
+
+### 2. Container Support (scripts/lib/docker.sh)
+
+```bash
+#!/bin/bash
+# Container management for rootless builds
+
+function docker_build_container() {
+    local dockerfile_path="$1"
+    local tag="$2"
+    
+    section_header "Building Container"
+    safe_execute docker build -t "${tag}" "${dockerfile_path}"
+}
+
+function docker_start_rootless() {
+    local image="$1"
+    local workdir="$2"
+    local volumes="$3"
+    
+    section_header "Starting Rootless Container"
+    local user_args="--user $(id -u):$(id -g)"
+    local volume_args=""
+    
+    for vol in ${volumes}; do
+        volume_args="${volume_args} -v ${vol}"
+    done
+    
+    safe_execute docker run ${user_args} ${volume_args} -w "${workdir}" "${image}"
+}
+
+function docker_commit_builder() {
+    local container_id="$1"
+    local new_tag="$2"
+    
+    section_header "Committing Builder Container"
+    safe_execute docker commit "${container_id}" "${new_tag}"
+}
+```
+
+### 3. Alpine Operations (scripts/lib/alpine.sh)
+
+```bash
+#!/bin/bash
+# Alpine miniroot and package operations
+
+function alpine_extract_miniroot() {
+    local version="3.22"
+    local arch="x86_64"
+    local target_dir="$1"
+    
+    section_header "Extracting Alpine Miniroot"
+    local url="https://dl-cdn.alpinelinux.org/alpine/v${version}/releases/${arch}/alpine-minirootfs-${version}.0-${arch}.tar.gz"
+    
+    safe_execute mkdir -p "${target_dir}"
+    safe_execute wget -O "/tmp/alpine-miniroot.tar.gz" "${url}"
+    safe_execute tar -xzf "/tmp/alpine-miniroot.tar.gz" -C "${target_dir}"
+    safe_execute rm "/tmp/alpine-miniroot.tar.gz"
+}
+
+function alpine_install_packages() {
+    local initramfs_dir="$1"
+    local packages_file="$2"
+    
+    section_header "Installing Alpine Packages"
+    
+    # Setup chroot environment
+    safe_execute mount --bind /proc "${initramfs_dir}/proc"
+    safe_execute mount --bind /sys "${initramfs_dir}/sys"
+    safe_execute mount --bind /dev "${initramfs_dir}/dev"
+    
+    # Install packages (NO OpenRC)
+    local packages=$(grep -v '^#' "${packages_file}" | grep -v '^$' | tr '\n' ' ')
+    safe_execute chroot "${initramfs_dir}" apk add --no-cache ${packages}
+    
+    # Cleanup
+    safe_execute umount "${initramfs_dir}/proc" || true
+    safe_execute umount "${initramfs_dir}/sys" || true
+    safe_execute umount "${initramfs_dir}/dev" || true
+}
+
+function alpine_aggressive_cleanup() {
+    local initramfs_dir="$1"
+    
+    section_header "Aggressive Alpine Cleanup"
+    
+    # Remove documentation
+    safe_execute rm -rf "${initramfs_dir}/usr/share/doc"
+    safe_execute rm -rf "${initramfs_dir}/usr/share/man"
+    safe_execute rm -rf "${initramfs_dir}/usr/share/info"
+    
+    # Remove locales except C
+    safe_execute find "${initramfs_dir}/usr/share/locale" -mindepth 1 -maxdepth 1 -type d ! -name 'C' -exec rm -rf {} + 2>/dev/null || true
+    
+    # Remove headers and development files
+    safe_execute rm -rf "${initramfs_dir}/usr/include"
+    safe_execute rm -rf "${initramfs_dir}/usr/lib/pkgconfig"
+    
+    # Remove APK cache
+    safe_execute rm -rf "${initramfs_dir}/var/cache/apk"
+    safe_execute rm -rf "${initramfs_dir}/lib/apk"
+}
+```
+
+### 4. Component Building (scripts/lib/components.sh)
+
+```bash
+#!/bin/bash
+# Component download and build system
+
+function components_parse_sources_conf() {
+    local sources_file="$1"
+    local components_dir="$2"
+    
+    section_header "Parsing Sources Configuration"
+    
+    while IFS=: read -r type name url version build_func extra; do
+        [[ $type =~ ^#.*$ ]] && continue  # Skip comments
+        [[ -z "$type" ]] && continue      # Skip empty lines
+        
+        log_info "Component: ${name} (${type})"
+        
+        case "$type" in
+            "git")
+                components_download_git "$name" "$url" "$version" "$components_dir"
+                ;;
+            "release")
+                components_download_release "$name" "$url" "$version" "$components_dir" "$extra"
+                ;;
+            *)
+                log_error "Unknown component type: $type"
+                exit 1
+                ;;
+        esac
+        
+        # Build component
+        components_build_component "$name" "$build_func" "$components_dir"
+        
+    done < <(grep -v '^#' "$sources_file" | grep -v '^$')
+}
+
+function components_download_git() {
+    local name="$1"
+    local url="$2"
+    local version="$3"
+    local components_dir="$4"
+    
+    local target_dir="${components_dir}/${name}"
+    
+    section_header "Downloading Git Component: ${name}"
+    
+    if [[ -d "$target_dir" ]]; then
+        log_info "Component ${name} already exists, updating..."
+        safe_execute cd "$target_dir"
+        safe_execute git fetch
+        safe_execute git checkout "$version"
+        safe_execute git pull origin "$version" || true
+    else
+        log_info "Cloning ${name} from ${url}"
+        safe_execute git clone "$url" "$target_dir"
+        safe_execute cd "$target_dir"
+        safe_execute git checkout "$version"
+    fi
+}
+
+function components_download_release() {
+    local name="$1"
+    local url="$2"
+    local version="$3"
+    local components_dir="$4"
+    local extra="$5"
+    
+    local target_dir="${components_dir}/${name}"
+    local filename=$(basename "$url")
+    
+    section_header "Downloading Release Component: ${name}"
+    
+    safe_execute mkdir -p "$target_dir"
+    safe_execute wget -O "${target_dir}/${filename}" "$url"
+    
+    # Handle rename option
+    if [[ "$extra" =~ rename=(.+) ]]; then
+        local new_name="${BASH_REMATCH[1]}"
+        safe_execute mv "${target_dir}/${filename}" "${target_dir}/${new_name}"
+    fi
+}
+
+function components_build_component() {
+    local name="$1"
+    local build_func="$2"
+    local components_dir="$3"
+    
+    section_header "Building Component: ${name}"
+    
+    local component_dir="${components_dir}/${name}"
+    safe_execute cd "$component_dir"
+    
+    # Call the specific build function
+    "$build_func" "$name" "$component_dir"
+}
+
+# Rust build functions for ThreeFold components
+function build_zinit() {
+    local name="$1"
+    local component_dir="$2"
+    
+    log_info "Building zinit with musl target"
+    export RUSTFLAGS="-C target-feature=+crt-static"
+    safe_execute cargo build --release --target x86_64-unknown-linux-musl
+    
+    # Copy binary to install location
+    local binary_path="target/x86_64-unknown-linux-musl/release/zinit"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/sbin/zinit"
+}
+
+function build_rfs() {
+    local name="$1"
+    local component_dir="$2"
+    
+    log_info "Building rfs with musl target"
+    export RUSTFLAGS="-C target-feature=+crt-static"
+    safe_execute cargo build --release --target x86_64-unknown-linux-musl
+    
+    # Copy binary to install location
+    local binary_path="target/x86_64-unknown-linux-musl/release/rfs"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/usr/bin/rfs"
+}
+
+function build_mycelium() {
+    local name="$1"
+    local component_dir="$2"
+    
+    log_info "Building mycelium with musl target (special directory)"
+    safe_execute cd myceliumd
+    export RUSTFLAGS="-C target-feature=+crt-static"
+    safe_execute cargo build --release --target x86_64-unknown-linux-musl
+    
+    # Copy binary from special path
+    local binary_path="target/x86_64-unknown-linux-musl/release/mycelium"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/usr/bin/mycelium"
+}
+
+function install_corex() {
+    local name="$1"
+    local component_dir="$2"
+    
+    log_info "Installing corex binary"
+    safe_execute chmod +x "${component_dir}/corex"
+    safe_execute cp "${component_dir}/corex" "${INSTALL_DIR}/usr/bin/corex"
+}
+```
+
+### 5. Initramfs Assembly (scripts/lib/initramfs.sh)
+
+```bash
+#!/bin/bash
+# Initramfs assembly and optimization
+
+function initramfs_setup_zinit() {
+    local initramfs_dir="$1"
+    local zinit_config_dir="$2"
+    
+    section_header "Setting up zinit as init"
+    
+    # Replace /sbin/init with zinit
+    safe_execute rm -f "${initramfs_dir}/sbin/init"
+    safe_execute ln -sf zinit "${initramfs_dir}/sbin/init"
+    
+    # Copy zinit configuration
+    safe_execute mkdir -p "${initramfs_dir}/etc/zinit"
+    safe_execute cp -r "${zinit_config_dir}"/* "${initramfs_dir}/etc/zinit/"
+}
+
+function initramfs_setup_modules() {
+    local initramfs_dir="$1"
+    local modules_conf="$2"
+    local kernel_version="$3"
+    
+    section_header "Setting up 2-stage module loading"
+    
+    local modules_dir="${initramfs_dir}/lib/modules/${kernel_version}"
+    safe_execute mkdir -p "$modules_dir"
+    
+    # Create stage1 and stage2 module lists
+    grep "^stage1:" "$modules_conf" | cut -d: -f2 > "${modules_dir}/stage1.list"
+    grep "^stage2:" "$modules_conf" | cut -d: -f2 > "${modules_dir}/stage2.list"
+}
+
+function initramfs_strip_and_upx() {
+    local initramfs_dir="$1"
+    
+    section_header "Stripping and UPX compressing binaries"
+    
+    # Find all executables and strip them
+    find "$initramfs_dir" -type f -executable -print0 | while IFS= read -r -d '' file; do
+        if file "$file" | grep -q "ELF.*executable"; then
+            log_info "Stripping: $file"
+            safe_execute strip "$file" || log_warn "Failed to strip $file"
+            
+            log_info "UPX compressing: $file"
+            safe_execute upx --best "$file" || log_warn "Failed to UPX $file"
+        fi
+    done
+    
+    # Strip libraries too
+    find "$initramfs_dir" -name "*.so*" -type f -print0 | while IFS= read -r -d '' file; do
+        if file "$file" | grep -q "ELF.*shared object"; then
+            log_info "Stripping library: $file"
+            safe_execute strip "$file" || log_warn "Failed to strip $file"
+        fi
+    done
+}
+
+function initramfs_create_cpio() {
+    local initramfs_dir="$1"
+    local output_file="$2"
+    
+    section_header "Creating initramfs.cpio.xz"
+    
+    safe_execute cd "$initramfs_dir"
+    safe_execute find . | cpio -o -H newc | xz -9 --check=crc32 > "$output_file"
+    
+    local size=$(du -h "$output_file" | cut -f1)
+    log_info "Created initramfs: $output_file ($size)"
+}
+```
+
+### 6. Configuration Files
+
+#### config/packages.list (migrate from existing)
+```
+# Based on existing configs/packages-minimal.txt
+# Core system (essential only)
+alpine-baselayout
+busybox
+musl
+
+# Module loading & hardware detection  
+eudev
+eudev-hwids
+eudev-libs
+eudev-netifnames
+kmod
+
+# Console/terminal management
+util-linux
+
+# Essential networking
+iproute2
+ethtool
+
+# Filesystem support
+btrfs-progs
+dosfstools
+
+# Essential libraries
+zlib
+
+# Network utilities
+dhcpcd
+tcpdump
+bmon
+
+# Random number generation
+haveged
+
+# SSH access and terminal multiplexer
+openssh-server
+zellij
+```
+
+#### config/modules.conf
+```bash
+# 2-stage module loading based on existing configs/modules-essential.list
+
+# Stage 1: Critical boot modules
+stage1:virtio_net
+stage1:virtio_scsi
+stage1:virtio_blk
+stage1:virtio_pci
+stage1:e1000
+stage1:e1000e
+stage1:scsi_mod
+stage1:sd_mod
+
+# Stage 2: Extended hardware support
+stage2:igb
+stage2:ixgbe
+stage2:i40e
+stage2:ice
+stage2:r8169
+stage2:bnx2
+stage2:bnx2x
+stage2:tg3
+stage2:overlay
+stage2:tun
+```
+
+#### config/zinit/zinit.conf
+```yaml
+# Main zinit configuration
+log_level: debug
+init:
+  - stage1-modules
+  - stage2-modules
+  - networking
+  - services
+```
+
+### 7. Main Build Script (scripts/build.sh)
+
+```bash
+#!/bin/bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+# Source all libraries
+source "${SCRIPT_DIR}/lib/docker.sh"
+source "${SCRIPT_DIR}/lib/alpine.sh"
+source "${SCRIPT_DIR}/lib/components.sh"
+source "${SCRIPT_DIR}/lib/initramfs.sh"
+source "${SCRIPT_DIR}/lib/kernel.sh"
+source "${SCRIPT_DIR}/lib/testing.sh"
+
+# Configuration
+ALPINE_VERSION="3.22"
+KERNEL_VERSION="6.8.8"
+export INSTALL_DIR="${PROJECT_ROOT}/initramfs"
+export COMPONENTS_DIR="${PROJECT_ROOT}/components"
+export KERNEL_DIR="${PROJECT_ROOT}/kernel"
+export DIST_DIR="${PROJECT_ROOT}/dist"
+
+function main() {
+    section_header "Zero OS Alpine Initramfs Builder"
+    
+    # Setup build environment
+    setup_build_environment
+    
+    # Extract Alpine miniroot
+    alpine_extract_miniroot "$INSTALL_DIR"
+    
+    # Install packages
+    alpine_install_packages "$INSTALL_DIR" "${PROJECT_ROOT}/config/packages.list"
+    
+    # Build and install components
+    export INSTALL_DIR  # Make available to component build functions
+    components_parse_sources_conf "${PROJECT_ROOT}/config/sources.conf" "$COMPONENTS_DIR"
+    
+    # Setup zinit
+    initramfs_setup_zinit "$INSTALL_DIR" "${PROJECT_ROOT}/config/zinit"
+    
+    # Setup modules
+    initramfs_setup_modules "$INSTALL_DIR" "${PROJECT_ROOT}/config/modules.conf" "$KERNEL_VERSION"
+    
+    # Aggressive cleanup
+    alpine_aggressive_cleanup "$INSTALL_DIR"
+    
+    # Strip and UPX all binaries
+    initramfs_strip_and_upx "$INSTALL_DIR"
+    
+    # Create initramfs
+    initramfs_create_cpio "$INSTALL_DIR" "${DIST_DIR}/initramfs.cpio.xz"
+    
+    # Build kernel with embedded initramfs
+    kernel_build_with_initramfs "${PROJECT_ROOT}/config/kernel.config" "${DIST_DIR}/initramfs.cpio.xz" "${DIST_DIR}/vmlinuz.efi"
+    
+    section_header "Build Complete"
+    log_info "Artifacts created in: $DIST_DIR"
+}
+
+function setup_build_environment() {
+    section_header "Setting up build environment"
+    
+    safe_execute mkdir -p "$INSTALL_DIR"
+    safe_execute mkdir -p "$COMPONENTS_DIR"
+    safe_execute mkdir -p "$KERNEL_DIR"
+    safe_execute mkdir -p "$DIST_DIR"
+    
+    # Install build dependencies
+    if command -v apk >/dev/null 2>&1; then
+        safe_execute apk add --no-cache build-base rust cargo upx strip git wget
+    elif command -v apt-get >/dev/null 2>&1; then
+        safe_execute apt-get update
+        safe_execute apt-get install -y build-essential rustc cargo upx-ucl binutils git wget
+    fi
+}
+
+main "$@"
+```
+
+## Next Steps
+
+1. **Switch to Code Mode**: Request mode switch to implement all files
+2. **Migrate Configs**: Move existing configurations to new structure
+3. **Test Build**: Run complete build process
+4. **Optimize**: Fine-tune strip/UPX and size optimization
+5. **Documentation**: Create README and GitHub Actions integration
+
+This plan provides a complete, production-ready build system with:
+- ✅ Rootless container support
+- ✅ Rust builds with musl targeting
+- ✅ Strip + UPX optimization
+- ✅ Strict error handling
+- ✅ Modular architecture
+- ✅ GitHub Actions compatibility
+- ✅ 2-stage module loading
+- ✅ Complete zinit integration

README.md

@@ -0,0 +1,467 @@
+# Zero OS Alpine Initramfs Builder
+
+A comprehensive build system for creating custom Alpine Linux 3.22 x86_64 initramfs with zinit process management, designed for Zero OS deployment.
+
+## Features
+
+- **Alpine Linux 3.22** miniroot as base system
+- **zinit** process manager (complete OpenRC replacement)
+- **Rootless containers** (Docker/Podman compatible)
+- **Rust components** with musl targeting (zinit, rfs, mycelium)
+- **Aggressive optimization** (strip + UPX compression)
+- **2-stage module loading** for hardware support
+- **GitHub Actions** compatible build pipeline
+- **Final output**: `vmlinuz.efi` with embedded `initramfs.cpio.xz`
+
+## Quick Start
+
+### Prerequisites
+
+#### Ubuntu/Debian
+```bash
+sudo apt-get update
+sudo apt-get install -y \
+  build-essential \
+  rustc \
+  cargo \
+  upx-ucl \
+  binutils \
+  git \
+  wget \
+  qemu-system-x86 \
+  podman
+
+# Add Rust musl target
+rustup target add x86_64-unknown-linux-musl
+sudo apt-get install -y musl-tools
+```
+
+#### Alpine Linux
+```bash
+apk add --no-cache \
+  build-base \
+  rust \
+  cargo \
+  upx \
+  git \
+  wget \
+  qemu-system-x86 \
+  podman
+
+# Add Rust musl target
+rustup target add x86_64-unknown-linux-musl
+```
+
+### Rootless Container Setup
+
+For rootless Docker/Podman support:
+
+```bash
+# Configure subuid/subgid (if not already configured)
+echo "$(whoami):100000:65536" | sudo tee -a /etc/subuid
+echo "$(whoami):100000:65536" | sudo tee -a /etc/subgid
+
+# Verify setup
+podman system info
+```
+
+### Build
+
+```bash
+# Clone the repository
+git clone <repository-url>
+cd zosbuilder
+
+# Make scripts executable
+chmod +x scripts/build.sh scripts/clean.sh
+
+# Build initramfs
+./scripts/build.sh
+
+# Output will be in dist/
+ls -la dist/
+# vmlinuz.efi          - Kernel with embedded initramfs
+# initramfs.cpio.xz    - Standalone initramfs archive
+```
+
+## Project Structure
+
+```
+zosbuilder/
+├── config/
+│   ├── zinit/              # zinit service definitions
+│   │   ├── services/       # individual service files
+│   │   └── zinit.conf      # main zinit configuration
+│   ├── packages.list       # Alpine packages to install
+│   ├── sources.conf        # components to build (ThreeFold)
+│   ├── kernel.config       # Linux kernel configuration
+│   └── modules.conf        # 2-stage module loading
+├── configs/                # existing configurations (migrated)
+├── scripts/
+│   ├── lib/
+│   │   ├── docker.sh       # container management
+│   │   ├── alpine.sh       # Alpine operations
+│   │   ├── components.sh   # source building
+│   │   ├── initramfs.sh    # assembly & optimization
+│   │   ├── kernel.sh       # kernel building
+│   │   └── testing.sh      # QEMU/cloud-hypervisor
+│   ├── build.sh            # main orchestrator
+│   └── clean.sh            # cleanup script
+├── initramfs/              # build output (generated)
+├── components/             # component sources (generated)
+├── kernel/                 # kernel source (generated)
+└── dist/                   # final artifacts (generated)
+```
+
+## Configuration
+
+### Component Sources (config/sources.conf)
+
+Define components to download and build:
+
+```bash
+# Format: TYPE:NAME:URL:VERSION:BUILD_FUNCTION[:EXTRA_OPTIONS]
+
+# Git repositories (Rust components with musl)
+git:zinit:https://github.com/threefoldtech/zinit:master:build_zinit
+git:mycelium:https://github.com/threefoldtech/mycelium:0.6.1:build_mycelium
+git:rfs:https://github.com/threefoldtech/rfs:development:build_rfs
+
+# Pre-built releases
+release:corex:https://github.com/threefoldtech/corex/releases/download/2.1.4/corex-2.1.4-amd64-linux-static:2.1.4:install_corex:rename=corex
+```
+
+### Package List (config/packages.list)
+
+Alpine packages to install (NO OpenRC):
+
+```bash
+# Core system
+alpine-baselayout
+busybox
+musl
+
+# Hardware detection & modules
+eudev
+eudev-hwids
+kmod
+
+# Networking
+iproute2
+ethtool
+dhcpcd
+
+# Filesystems
+btrfs-progs
+dosfstools
+
+# Security & SSH
+haveged
+openssh-server
+
+# Tools
+zellij
+tcpdump
+bmon
+```
+
+### Module Loading (config/modules.conf)
+
+2-stage hardware module loading:
+
+```bash
+# Stage 1: Critical boot modules
+stage1:virtio_net
+stage1:virtio_scsi
+stage1:virtio_blk
+stage1:e1000
+stage1:e1000e
+
+# Stage 2: Extended hardware support
+stage2:igb
+stage2:ixgbe
+stage2:i40e
+stage2:r8169
+stage2:bnx2
+stage2:bnx2x
+```
+
+### zinit Configuration (config/zinit/)
+
+#### Main config (config/zinit/zinit.conf)
+```yaml
+log_level: debug
+init:
+  - stage1-modules
+  - stage2-modules
+  - networking
+  - services
+```
+
+#### Service definitions (config/zinit/services/)
+
+Services are migrated from existing `configs/zinit/` directory with proper initialization order.
+
+## Build Process
+
+### Phase 1: Environment Setup
+1. Create build directories
+2. Install build dependencies
+3. Setup Rust musl target
+
+### Phase 2: Alpine Base
+1. Download Alpine 3.22 miniroot
+2. Extract to initramfs directory
+3. Install packages from `config/packages.list`
+4. **NO OpenRC installation**
+
+### Phase 3: Component Building
+1. Parse `config/sources.conf`
+2. Download/clone sources to `components/`
+3. Build Rust components with musl:
+   - **zinit**: Standard cargo build
+   - **rfs**: Standard cargo build  
+   - **mycelium**: Build in `myceliumd/` subdirectory
+4. Install binaries to initramfs
+
+### Phase 4: System Configuration
+1. Replace `/sbin/init` with zinit
+2. Copy zinit configuration
+3. Setup 2-stage module loading
+4. Configure system services
+
+### Phase 5: Optimization
+1. **Aggressive cleanup**:
+   - Remove docs, man pages, locales
+   - Remove headers, development files
+   - Remove APK cache
+2. **Binary optimization**:
+   - Strip all executables and libraries
+   - UPX compress all binaries
+3. **Size verification**
+
+### Phase 6: Packaging
+1. Create `initramfs.cpio.xz` with XZ compression
+2. Build kernel with embedded initramfs
+3. Generate `vmlinuz.efi`
+
+## Testing
+
+### QEMU Testing
+```bash
+# Boot test with QEMU
+./scripts/test.sh --qemu
+
+# With serial console
+./scripts/test.sh --qemu --serial
+```
+
+### cloud-hypervisor Testing
+```bash
+# Boot test with cloud-hypervisor
+./scripts/test.sh --cloud-hypervisor
+```
+
+### Custom Testing
+```bash
+# Manual QEMU command
+qemu-system-x86_64 \
+  -kernel dist/vmlinuz.efi \
+  -m 512M \
+  -nographic \
+  -serial mon:stdio \
+  -append "console=ttyS0,115200 console=tty1 loglevel=7"
+```
+
+## Size Optimization
+
+The build system achieves minimal size through:
+
+### Package Selection
+- Minimal Alpine packages (~50MB target)
+- No OpenRC or systemd
+- Essential tools only
+
+### Binary Optimization
+- **strip**: Remove debug symbols
+- **UPX**: Maximum compression
+- **musl static linking**: No runtime dependencies
+
+### Filesystem Cleanup
+- Remove documentation
+- Remove locales (except C)
+- Remove development headers
+- Remove package manager cache
+
+### Expected Sizes
+- **Base Alpine**: ~5MB
+- **With packages**: ~25MB  
+- **With components**: ~40MB
+- **After optimization**: ~15-20MB
+- **Final initramfs.cpio.xz**: ~8-12MB
+
+## GitHub Actions Integration
+
+See [GITHUB_ACTIONS.md](GITHUB_ACTIONS.md) for complete CI/CD setup.
+
+### Basic Workflow
+```yaml
+name: Build Zero OS
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup rootless containers
+      run: |
+        echo "runner:100000:65536" | sudo tee -a /etc/subuid
+        echo "runner:100000:65536" | sudo tee -a /etc/subgid
+    - name: Build
+      run: ./scripts/build.sh
+    - name: Test
+      run: ./scripts/test.sh --qemu
+```
+
+## Advanced Usage
+
+### Custom Components
+
+Add custom components to `config/sources.conf`:
+
+```bash
+# Custom Git component
+git:myapp:https://github.com/user/myapp:v1.0:build_myapp
+
+# Custom release
+release:mytool:https://releases.example.com/mytool-x86_64:v2.0:install_mytool
+```
+
+Implement build function in `scripts/lib/components.sh`:
+
+```bash
+function build_myapp() {
+    local name="$1"
+    local component_dir="$2"
+    
+    # Custom build logic
+    export RUSTFLAGS="-C target-feature=+crt-static"
+    cargo build --release --target x86_64-unknown-linux-musl
+    
+    # Install binary
+    cp target/x86_64-unknown-linux-musl/release/myapp "${INSTALL_DIR}/usr/bin/"
+}
+```
+
+### Container Builds
+
+Build in isolated container:
+
+```bash
+# Build container image
+podman build -t zero-os-builder .
+
+# Run build in container
+podman run --rm \
+  -v $(pwd):/workspace \
+  -w /workspace \
+  zero-os-builder \
+  ./scripts/build.sh
+```
+
+### Cross-Platform Support
+
+The build system supports multiple architectures:
+
+```bash
+# Build for different targets
+export RUST_TARGET="aarch64-unknown-linux-musl"
+export ALPINE_ARCH="aarch64"
+./scripts/build.sh
+```
+
+## Troubleshooting
+
+### Common Issues
+
+#### Build Failures
+```bash
+# Clean and retry
+./scripts/clean.sh
+./scripts/build.sh
+
+# Check dependencies
+./scripts/build.sh --check-deps
+```
+
+#### Container Issues
+```bash
+# Verify rootless setup
+podman system info
+
+# Reset user namespace
+podman system reset
+```
+
+#### Rust Build Issues
+```bash
+# Verify musl target
+rustup target list --installed | grep musl
+
+# Add if missing
+rustup target add x86_64-unknown-linux-musl
+```
+
+### Debug Mode
+```bash
+# Enable verbose output
+export DEBUG=1
+./scripts/build.sh
+```
+
+### Size Analysis
+```bash
+# Analyze initramfs contents
+./scripts/analyze-size.sh
+
+# Show largest files
+find initramfs/ -type f -exec du -h {} \; | sort -rh | head -20
+```
+
+## Contributing
+
+1. **Fork** the repository
+2. **Create** feature branch
+3. **Test** thoroughly with both QEMU and cloud-hypervisor
+4. **Ensure** size optimization targets are met
+5. **Submit** pull request with detailed description
+
+### Development Workflow
+
+```bash
+# Setup development environment
+./scripts/setup-dev.sh
+
+# Run tests
+./scripts/test.sh --all
+
+# Check size impact
+./scripts/analyze-size.sh --compare
+```
+
+## License
+
+[License information]
+
+## Support
+
+- **Issues**: GitHub Issues
+- **Documentation**: See `docs/` directory
+- **Examples**: See `examples/` directory
+
+## Related Projects
+
+- [ThreeFold Zero OS](https://github.com/threefoldtech/zos)
+- [zinit](https://github.com/threefoldtech/zinit)
+- [Mycelium](https://github.com/threefoldtech/mycelium)
+- [RFS](https://github.com/threefoldtech/rfs)

config/build.conf

@@ -0,0 +1,46 @@
+# Zero OS Alpine Initramfs Builder Configuration
+# This file contains all build-time configuration parameters
+
+# System versions
+ALPINE_VERSION="3.22"
+KERNEL_VERSION="6.12.44"
+
+# Rust configuration
+RUST_TARGET="x86_64-unknown-linux-musl"
+
+# Build optimization
+OPTIMIZATION_LEVEL="max"
+
+# Container configuration
+CONTAINER_RUNTIME="auto"
+BUILDER_IMAGE="zero-os-builder:latest"
+
+# Compression settings
+INITRAMFS_COMPRESSION="xz"
+XZ_COMPRESSION_LEVEL="9"
+
+# Testing configuration
+QEMU_MEMORY="512M"
+QEMU_TIMEOUT="60"
+CLOUD_HYPERVISOR_MEMORY="512M"
+
+# Build directories (relative to project root)
+INSTALL_DIR="initramfs"
+COMPONENTS_DIR="components"
+KERNEL_DIR="kernel"
+DIST_DIR="dist"
+
+# Mirror configurations
+ALPINE_MIRROR="https://dl-cdn.alpinelinux.org/alpine"
+KERNEL_SOURCE_URL="https://cdn.kernel.org/pub/linux/kernel"
+
+# Feature flags
+ENABLE_STRIP="true"
+ENABLE_UPX="true"
+ENABLE_AGGRESSIVE_CLEANUP="true"
+ENABLE_2STAGE_MODULES="true"
+
+# Debug and development
+DEBUG_DEFAULT="0"
+KEEP_BUILD_ARTIFACTS="false"
+PARALLEL_JOBS="auto"

config/modules.conf

@@ -0,0 +1,52 @@
+# 2-stage module loading specification for Zero-OS Alpine initramfs
+# Based on existing configs/modules-essential.list
+# Format: STAGE:MODULE_NAME:FIRMWARE_FILES (optional)
+
+# Stage 1: Critical boot modules (loaded early for basic functionality)
+stage1:virtio_net
+stage1:virtio_scsi
+stage1:virtio_blk
+stage1:virtio_pci
+stage1:e1000
+stage1:e1000e
+stage1:scsi_mod
+stage1:sd_mod
+stage1:ahci
+stage1:nvme
+
+# Stage 2: Extended hardware support (loaded after initial boot)
+stage2:igb
+stage2:ixgbe
+stage2:i40e
+stage2:ice
+stage2:r8169
+stage2:8139too
+stage2:8139cp
+stage2:bnx2
+stage2:bnx2x
+stage2:tg3
+stage2:b44
+stage2:atl1
+stage2:atl1e
+stage2:atl1c
+stage2:alx
+
+# Tunnel and container support
+stage2:tun
+stage2:overlay
+
+# Control Groups (cgroups) - essential for container management
+stage2:cgroup_pids
+stage2:cgroup_freezer
+stage2:cgroup_perf_event
+stage2:cgroup_device
+stage2:cgroup_cpuset
+stage2:cgroup_bpf
+stage2:memcg
+stage2:blkio_cgroup
+stage2:cpu_cgroup
+stage2:cpuacct
+stage2:hugetlb_cgroup
+stage2:net_cls_cgroup
+stage2:net_prio_cgroup
+stage2:devices_cgroup

config/packages.list

@@ -0,0 +1,46 @@
+# Alpine packages for Zero-OS embedded initramfs
+# Based on existing configs/packages-minimal.txt
+# Target: ~50MB total (not 700MB!)
+
+# Core system (essential only)
+alpine-baselayout
+busybox
+musl
+
+# Module loading & hardware detection
+eudev
+eudev-hwids
+eudev-libs
+eudev-netifnames
+kmod
+
+# Console/terminal management
+util-linux
+
+# Essential networking (for Zero-OS connectivity)
+iproute2
+ethtool
+
+# Filesystem support (minimal)
+btrfs-progs
+dosfstools
+
+# Essential libraries only
+zlib
+
+# Network utilities (minimal)
+dhcpcd
+tcpdump
+bmon
+
+# Random number generation (for crypto/security)
+haveged
+
+# SSH access and terminal multiplexer
+openssh-server
+zellij
+
+# Essential debugging and monitoring tools included
+# NO development tools, NO curl/wget, NO python, NO redis
+# NO massive linux-firmware package
+# Other tools will be loaded from RFS after network connectivity

config/sources.conf

@@ -0,0 +1,10 @@
+# sources.conf - Components to download and build for initramfs
+# Format: TYPE:NAME:URL:VERSION:BUILD_FUNCTION[:EXTRA_OPTIONS]
+
+# Git repositories to clone and build
+git:zinit:https://github.com/threefoldtech/zinit:master:build_zinit
+git:mycelium:https://github.com/threefoldtech/mycelium:0.6.1:build_mycelium
+git:rfs:https://github.com/threefoldtech/rfs:development:build_rfs
+
+# Pre-built releases to download
+release:corex:https://github.com/threefoldtech/corex/releases/download/2.1.4/corex-2.1.4-amd64-linux-static:2.1.4:install_corex:rename=corex

config/zinit/cgroup.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/cgroup.sh
+oneshot: true

config/zinit/console.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty -L 9600 console
+restart: always

config/zinit/depmod.yaml

@@ -0,0 +1 @@
+exec: depmod -a

config/zinit/getty.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty -L 115200 ttyS0 vt100
+restart: always

config/zinit/gettyconsole.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty console linux
+restart: always

config/zinit/haveged.yaml

@@ -0,0 +1,2 @@
+exec: haveged -w 1024 -d 32 -i 32 -v 1
+oneshot: true

config/zinit/init/ashloging.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+echo "start ash terminal"
+while true; do
+    getty -l /bin/ash -n 19200 tty2
+done

config/zinit/init/cgroup.sh

@@ -0,0 +1,10 @@
+set -x
+
+mount -t tmpfs cgroup_root /sys/fs/cgroup
+
+subsys="pids cpuset cpu cpuacct blkio memory devices freezer net_cls perf_event net_prio hugetlb"
+
+for sys in $subsys; do
+    mkdir -p /sys/fs/cgroup/$sys
+    mount -t cgroup $sys -o $sys /sys/fs/cgroup/$sys/
+done

config/zinit/init/modprobe.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+modprobe fuse
+modprobe btrfs
+modprobe tun
+modprobe br_netfilter
+
+echo never > /sys/kernel/mm/transparent_hugepage/enabled
+
+ulimit -n 524288

config/zinit/init/ntpd.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+ntp_flags=$(grep -o 'ntp=.*' /proc/cmdline | sed 's/^ntp=//')
+
+params=""
+if [ -n "$ntp_flags" ]; then
+  params=$(echo "-p $ntp_flags" | sed s/,/' -p '/g)
+fi
+
+exec ntpd -n $params

config/zinit/init/routing.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo "Enable ip forwarding"
+echo 1 > /proc/sys/net/ipv4/ip_forward

config/zinit/init/shm.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+mkdir /dev/shm
+mount -t tmpfs shm /dev/shm 

config/zinit/init/sshd-setup.sh

@@ -0,0 +1,15 @@
+#!/bin/ash
+if [ -f /etc/ssh/ssh_host_rsa_key ]; then
+    # ensure existing file permissions
+    chown root:root /etc/ssh/ssh_host_*
+    chmod 600 /etc/ssh/ssh_host_*
+    exit 0
+fi
+
+echo "Setting up sshd"
+mkdir -p /run/sshd
+
+ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa
+ssh-keygen -f /etc/ssh/ssh_host_dsa_key -N '' -t dsa
+ssh-keygen -f /etc/ssh/ssh_host_ecdsa_key -N '' -t ecdsa -b 521
+ssh-keygen -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519

config/zinit/init/udev.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+udevadm trigger --action=add
+udevadm settle

config/zinit/lo.yaml

@@ -0,0 +1,2 @@
+exec: ip l set lo up
+oneshot: true

config/zinit/local-modprobe.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/modprobe.sh
+oneshot: true

config/zinit/mycelium.yaml

@@ -0,0 +1,6 @@
+exec: /usr/bin/mycelium --key-file /tmp/mycelium_priv_key.bin
+  --tun-name my0 --silent --peers tcp://188.40.132.242:9651 tcp://136.243.47.186:9651
+  tcp://185.69.166.7:9651 tcp://185.69.166.8:9651 tcp://65.21.231.58:9651 tcp://65.109.18.113:9651
+  tcp://209.159.146.190:9651 tcp://5.78.122.16:9651 tcp://5.223.43.251:9651 tcp://142.93.217.194:9651
+after:
+  - network

config/zinit/network.yaml

@@ -0,0 +1,5 @@
+exec: dhcpcd eth0
+after:
+  - depmod
+  - udevd
+  - udev-trigger

config/zinit/ntp.yaml

@@ -0,0 +1,3 @@
+exec: sh /etc/zinit/init/ntpd.sh
+after:
+  - network

config/zinit/routing.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/routing.sh
+oneshot: true

config/zinit/shm.yaml

@@ -0,0 +1,2 @@
+exec: /etc/zinit/init/shm.sh
+oneshot: true

config/zinit/sshd-setup.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/sshd-setup.sh
+oneshot: true

config/zinit/sshd.yaml

@@ -0,0 +1,3 @@
+exec: /usr/sbin/sshd -D -e
+after:
+    - sshd-setup

config/zinit/stage1-modules.yaml

@@ -0,0 +1,5 @@
+exec: sh /etc/zinit/init/stage1-modules.sh
+oneshot: true
+after:
+  - udevd
+test: /etc/zinit/init/stage1-modules.sh

config/zinit/stage2-modules.yaml

@@ -0,0 +1,6 @@
+exec: sh /etc/zinit/init/stage2-modules.sh
+oneshot: true
+after:
+  - stage1-modules
+  - network
+test: /etc/zinit/init/stage2-modules.sh

config/zinit/udev-trigger.yaml

@@ -0,0 +1,6 @@
+exec: sh /etc/zinit/init/udev.sh
+oneshot: true
+after:
+  - depmod
+  - udevmon
+  - udevd

config/zinit/udevd.yaml

@@ -0,0 +1 @@
+exec: udevd

config/zinit/udevmon.yaml

@@ -0,0 +1 @@
+exec: udevadm monitor

config/zinit/zinit.conf

@@ -0,0 +1,33 @@
+# Main zinit configuration for Zero OS Alpine
+# This replaces OpenRC completely
+
+# Logging configuration
+log_level: debug
+log_file: /var/log/zinit/zinit.log
+
+# Initialization phases
+init:
+  # Phase 1: Critical system setup
+  - stage1-modules
+  - udevd
+  - depmod
+  
+  # Phase 2: Extended hardware and networking
+  - stage2-modules
+  - network
+  - lo
+  
+  # Phase 3: System services
+  - routing
+  - ntp
+  - haveged
+  
+  # Phase 4: User services
+  - sshd-setup
+  - sshd
+  - getty
+  - console
+  - gettyconsole
+
+# Service dependencies and ordering managed by individual service files
+# All services are defined in the services/ subdirectory

configs/init

@@ -0,0 +1,103 @@
+#!/bin/sh
+# Alpine-based Zero-OS Init Script
+# Maintains identical flow to original busybox version
+
+echo ""
+echo "============================================"
+echo "==       ZERO-OS ALPINE INITRAMFS        =="
+echo "============================================"
+
+echo "[+] creating ram filesystem"
+mount -t proc proc /proc
+mount -t sysfs sysfs /sys
+mount -t tmpfs tmpfs /mnt/root -o size=1536M
+mount -t devtmpfs devtmpfs /dev
+
+echo "[+] building ram filesystem"
+target="/mnt/root"
+
+# Copy Alpine filesystem to tmpfs (same as original)
+echo "  copying /bin..."
+cp -ar /bin $target
+echo "  copying /etc..."
+cp -ar /etc $target
+echo "  copying /lib..."
+cp -ar /lib* $target
+echo "  copying /usr..."
+cp -ar /usr $target
+echo "  copying /root..."
+cp -ar /root $target
+echo "  copying /sbin..."
+cp -ar /sbin $target
+echo "  copying /tmp..."
+cp -ar /tmp $target
+echo "  copying /var..."
+cp -ar /var $target
+echo "  copying /run..."
+cp -ar /run $target
+
+# Create essential directories
+mkdir -p $target/dev
+mkdir -p $target/sys
+mkdir -p $target/proc
+mkdir -p $target/mnt
+
+# Mount filesystems in tmpfs
+mount -t proc proc $target/proc
+mount -t sysfs sysfs $target/sys
+mount -t devtmpfs devtmpfs $target/dev
+
+# Mount devpts for terminals
+mkdir -p $target/dev/pts
+mount -t devpts devpts $target/dev/pts
+
+echo "[+] setting environment"
+export PATH
+
+echo "[+] probing drivers"
+# Use Alpine's udev instead of busybox udevadm
+if [ -x /sbin/udevd ]; then
+    echo "  starting udevd..."
+    udevd --daemon
+    
+    echo "  triggering device discovery..."
+    udevadm trigger --action=add --type=subsystems
+    udevadm trigger --action=add --type=devices
+    udevadm settle
+    
+    echo "  stopping udevd..."
+    kill $(pidof udevd) || true
+else
+    echo "  warning: udevd not found, skipping hardware detection"
+fi
+
+echo "[+] loading essential drivers"
+# Load core drivers for storage and network
+modprobe btrfs 2>/dev/null || true
+modprobe fuse 2>/dev/null || true
+modprobe overlay 2>/dev/null || true
+
+# Load storage drivers
+modprobe ahci 2>/dev/null || true
+modprobe nvme 2>/dev/null || true
+modprobe virtio_blk 2>/dev/null || true
+modprobe virtio_scsi 2>/dev/null || true
+
+# Load network drivers  
+modprobe virtio_net 2>/dev/null || true
+modprobe e1000 2>/dev/null || true
+modprobe e1000e 2>/dev/null || true
+
+# Unmount init filesystems
+umount /proc 2>/dev/null || true
+umount /sys 2>/dev/null || true
+
+echo "[+] checking for debug files"
+if [ -e /init-debug ]; then
+    echo "  executing debug script..."
+    sh /init-debug
+fi
+
+echo "[+] switching root"
+echo "  exec switch_root /mnt/root /sbin/zinit init"
+exec switch_root /mnt/root /sbin/zinit init

configs/modules-essential.list

@@ -0,0 +1,59 @@
+# Essential kernel modules for Zero-OS Alpine initramfs
+# This file contains a curated list of essential modules for network and storage functionality
+# Comments are supported (lines starting with #)
+
+# Network drivers - Intel
+e1000
+e1000e
+igb
+ixgbe
+i40e
+ice
+
+# Network drivers - Realtek
+r8169
+8139too
+8139cp
+
+# Network drivers - Broadcom
+bnx2
+bnx2x
+tg3
+b44
+
+# Network drivers - Atheros
+atl1
+atl1e
+atl1c
+alx
+
+# VirtIO drivers
+virtio_net
+virtio_scsi
+virtio_blk
+virtio_pci
+
+# Tunnel and container support
+tun
+overlay
+
+# Storage subsystem (essential only)
+scsi_mod
+sd_mod
+
+# Control Groups (cgroups v1 and v2) - essential for container management
+cgroup_pids
+cgroup_freezer
+cgroup_perf_event
+cgroup_device
+cgroup_cpuset
+cgroup_bpf
+cgroup_debug
+memcg
+blkio_cgroup
+cpu_cgroup
+cpuacct
+hugetlb_cgroup
+net_cls_cgroup
+net_prio_cgroup
+devices_cgroup

configs/packages-minimal.txt

@@ -0,0 +1,46 @@
+# MINIMAL Alpine packages for Zero-OS embedded initramfs
+# Target: ~50MB total (not 700MB!)
+
+# Core system (essential only)
+alpine-baselayout
+busybox
+musl
+
+# Module loading & hardware detection
+eudev
+eudev-hwids
+eudev-libs
+eudev-netifnames
+kmod
+
+# Console/terminal management
+util-linux
+
+# Essential networking (for Zero-OS connectivity)
+iproute2
+ethtool
+
+# Filesystem support (minimal)
+btrfs-progs
+dosfstools
+
+# Essential libraries only
+zlib
+
+# Network utilities (minimal)
+dhcpcd
+tcpdump
+bmon
+
+# Random number generation (for crypto/security)
+haveged
+
+# SSH access and terminal multiplexer
+openssh-server
+zellij
+
+
+# Essential debugging and monitoring tools included
+# NO development tools, NO curl/wget, NO python, NO redis
+# NO massive linux-firmware package
+# Other tools will be loaded from RFS after network connectivity

configs/sources.conf

@@ -0,0 +1,10 @@
+# sources.conf - Components to download and build for initramfs
+# Format: TYPE:NAME:URL:VERSION:BUILD_FUNCTION[:EXTRA_OPTIONS]
+
+# Git repositories to clone and build
+git:zinit:https://github.com/threefoldtech/zinit:master:build_zinit
+git:mycelium:https://github.com/threefoldtech/mycelium:0.6.1:build_mycelium
+git:rfs:https://github.com/threefoldtech/rfs:development:build_rfs
+
+# Pre-built releases to download
+release:corex:https://github.com/threefoldtech/corex/releases/download/2.1.4/corex-2.1.4-amd64-linux-static:2.1.4:install_corex:rename=corex

configs/zinit/cgroup.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/cgroup.sh
+oneshot: true

configs/zinit/console.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty -L 9600 console
+restart: always

configs/zinit/depmod.yaml

@@ -0,0 +1 @@
+exec: depmod -a

configs/zinit/getty.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty -L 115200 ttyS0 vt100
+restart: always

configs/zinit/gettyconsole.yaml

@@ -0,0 +1,2 @@
+exec: /sbin/getty console linux
+restart: always

configs/zinit/haveged.yaml

@@ -0,0 +1,2 @@
+exec: haveged -w 1024 -d 32 -i 32 -v 1
+oneshot: true

configs/zinit/init/ashloging.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+echo "start ash terminal"
+while true; do
+    getty -l /bin/ash -n 19200 tty2
+done

configs/zinit/init/cgroup.sh

@@ -0,0 +1,10 @@
+set -x
+
+mount -t tmpfs cgroup_root /sys/fs/cgroup
+
+subsys="pids cpuset cpu cpuacct blkio memory devices freezer net_cls perf_event net_prio hugetlb"
+
+for sys in $subsys; do
+    mkdir -p /sys/fs/cgroup/$sys
+    mount -t cgroup $sys -o $sys /sys/fs/cgroup/$sys/
+done

configs/zinit/init/modprobe.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+modprobe fuse
+modprobe btrfs
+modprobe tun
+modprobe br_netfilter
+
+echo never > /sys/kernel/mm/transparent_hugepage/enabled
+
+ulimit -n 524288

configs/zinit/init/ntpd.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+ntp_flags=$(grep -o 'ntp=.*' /proc/cmdline | sed 's/^ntp=//')
+
+params=""
+if [ -n "$ntp_flags" ]; then
+  params=$(echo "-p $ntp_flags" | sed s/,/' -p '/g)
+fi
+
+exec ntpd -n $params

configs/zinit/init/routing.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo "Enable ip forwarding"
+echo 1 > /proc/sys/net/ipv4/ip_forward

configs/zinit/init/shm.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+mkdir /dev/shm
+mount -t tmpfs shm /dev/shm 

configs/zinit/init/sshd-setup.sh

@@ -0,0 +1,15 @@
+#!/bin/ash
+if [ -f /etc/ssh/ssh_host_rsa_key ]; then
+    # ensure existing file permissions
+    chown root:root /etc/ssh/ssh_host_*
+    chmod 600 /etc/ssh/ssh_host_*
+    exit 0
+fi
+
+echo "Setting up sshd"
+mkdir -p /run/sshd
+
+ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa
+ssh-keygen -f /etc/ssh/ssh_host_dsa_key -N '' -t dsa
+ssh-keygen -f /etc/ssh/ssh_host_ecdsa_key -N '' -t ecdsa -b 521
+ssh-keygen -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519

configs/zinit/init/udev.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+udevadm trigger --action=add
+udevadm settle

configs/zinit/lo.yaml

@@ -0,0 +1,2 @@
+exec: ip l set lo up
+oneshot: true

configs/zinit/local-modprobe.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/modprobe.sh
+oneshot: true

configs/zinit/mycelium.yaml

@@ -0,0 +1,6 @@
+exec: /usr/bin/mycelium --key-file /tmp/mycelium_priv_key.bin
+  --tun-name my0 --silent --peers tcp://188.40.132.242:9651 tcp://136.243.47.186:9651
+  tcp://185.69.166.7:9651 tcp://185.69.166.8:9651 tcp://65.21.231.58:9651 tcp://65.109.18.113:9651
+  tcp://209.159.146.190:9651 tcp://5.78.122.16:9651 tcp://5.223.43.251:9651 tcp://142.93.217.194:9651
+after:
+  - network

configs/zinit/network.yaml

@@ -0,0 +1,5 @@
+exec: dhcpcd eth0
+after:
+  - depmod
+  - udevd
+  - udev-trigger

configs/zinit/ntp.yaml

@@ -0,0 +1,3 @@
+exec: sh /etc/zinit/init/ntpd.sh
+after:
+  - network

configs/zinit/routing.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/routing.sh
+oneshot: true

configs/zinit/shm.yaml

@@ -0,0 +1,2 @@
+exec: /etc/zinit/init/shm.sh
+oneshot: true

configs/zinit/sshd-setup.yaml

@@ -0,0 +1,2 @@
+exec: sh /etc/zinit/init/sshd-setup.sh
+oneshot: true

configs/zinit/sshd.yaml

@@ -0,0 +1,3 @@
+exec: /usr/sbin/sshd -D -e
+after:
+    - sshd-setup

configs/zinit/udev-trigger.yaml

@@ -0,0 +1,6 @@
+exec: sh /etc/zinit/init/udev.sh
+oneshot: true
+after:
+  - depmod
+  - udevmon
+  - udevd

configs/zinit/udevd.yaml

@@ -0,0 +1 @@
+exec: udevd

configs/zinit/udevmon.yaml

@@ -0,0 +1 @@
+exec: udevadm monitor

scripts/build.sh

@@ -0,0 +1,314 @@
+#!/bin/bash
+# Main orchestrator script for Zero OS Alpine Initramfs Builder
+
+set -euo pipefail
+
+# Script directory and project root detection
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+# Source all libraries
+source "${SCRIPT_DIR}/lib/common.sh"
+source "${SCRIPT_DIR}/lib/docker.sh"
+source "${SCRIPT_DIR}/lib/alpine.sh"
+source "${SCRIPT_DIR}/lib/components.sh"
+source "${SCRIPT_DIR}/lib/initramfs.sh"
+source "${SCRIPT_DIR}/lib/kernel.sh"
+source "${SCRIPT_DIR}/lib/testing.sh"
+
+# Build configuration loaded from config/build.conf via common.sh
+# Environment variables can override config file values
+ALPINE_VERSION="${ALPINE_VERSION:-3.22}"
+KERNEL_VERSION="${KERNEL_VERSION:-6.12.44}"
+RUST_TARGET="${RUST_TARGET:-x86_64-unknown-linux-musl}"
+OPTIMIZATION_LEVEL="${OPTIMIZATION_LEVEL:-max}"
+
+# Directory configuration
+export INSTALL_DIR="${PROJECT_ROOT}/initramfs"
+export COMPONENTS_DIR="${PROJECT_ROOT}/components"
+export KERNEL_DIR="${PROJECT_ROOT}/kernel"
+export DIST_DIR="${PROJECT_ROOT}/dist"
+
+# Configuration files
+CONFIG_DIR="${PROJECT_ROOT}/config"
+PACKAGES_LIST="${CONFIG_DIR}/packages.list"
+SOURCES_CONF="${CONFIG_DIR}/sources.conf"
+MODULES_CONF="${CONFIG_DIR}/modules.conf"
+KERNEL_CONFIG="${CONFIG_DIR}/kernel.config"
+ZINIT_CONFIG_DIR="${CONFIG_DIR}/zinit"
+
+# Build options
+USE_CONTAINER="${USE_CONTAINER:-auto}"
+CLEAN_BUILD="${CLEAN_BUILD:-false}"
+SKIP_TESTS="${SKIP_TESTS:-false}"
+KEEP_ARTIFACTS="${KEEP_ARTIFACTS:-false}"
+
+# Display usage information
+function show_usage() {
+    cat << EOF
+Zero OS Alpine Initramfs Builder
+
+Usage: $0 [OPTIONS]
+
+Options:
+  --container          Force container build
+  --no-container       Force native build
+  --clean              Clean build (remove all artifacts first)
+  --skip-tests         Skip boot tests
+  --keep-artifacts     Keep build artifacts after completion
+  --help               Show this help message
+
+Environment Variables:
+  ALPINE_VERSION       Alpine Linux version (default: 3.22)
+  KERNEL_VERSION       Linux kernel version (default: 6.8.8)
+  RUST_TARGET          Rust compilation target (default: x86_64-unknown-linux-musl)
+  OPTIMIZATION_LEVEL   Optimization level: max|size|speed (default: max)
+  DEBUG                Enable debug output (default: 0)
+
+Examples:
+  $0                   # Basic build
+  $0 --clean           # Clean build
+  $0 --container       # Force container build
+  DEBUG=1 $0           # Build with debug output
+EOF
+}
+
+# Parse command line arguments
+function parse_arguments() {
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            --container)
+                USE_CONTAINER="true"
+                shift
+                ;;
+            --no-container)
+                USE_CONTAINER="false"
+                shift
+                ;;
+            --clean)
+                CLEAN_BUILD="true"
+                shift
+                ;;
+            --skip-tests)
+                SKIP_TESTS="true"
+                shift
+                ;;
+            --keep-artifacts)
+                KEEP_ARTIFACTS="true"
+                shift
+                ;;
+            --help|-h)
+                show_usage
+                exit 0
+                ;;
+            *)
+                log_error "Unknown option: $1"
+                show_usage
+                exit 1
+                ;;
+        esac
+    done
+}
+
+# Setup build environment
+function setup_build_environment() {
+    section_header "Setting up build environment"
+    
+    log_info "Project root: ${PROJECT_ROOT}"
+    log_info "Alpine version: ${ALPINE_VERSION}"
+    log_info "Kernel version: ${KERNEL_VERSION}"
+    log_info "Rust target: ${RUST_TARGET}"
+    log_info "Optimization level: ${OPTIMIZATION_LEVEL}"
+    
+    # Create build directories
+    safe_mkdir "$INSTALL_DIR"
+    safe_mkdir "$COMPONENTS_DIR"
+    safe_mkdir "$KERNEL_DIR"
+    safe_mkdir "$DIST_DIR"
+    
+    # Check dependencies
+    if ! check_dependencies; then
+        log_error "Dependency check failed"
+        return 1
+    fi
+    
+    # Verify configuration files exist
+    verify_configuration_files
+    
+    log_info "Build environment setup complete"
+}
+
+# Verify all required configuration files exist
+function verify_configuration_files() {
+    section_header "Verifying Configuration Files"
+    
+    local required_configs=(
+        "$PACKAGES_LIST"
+        "$SOURCES_CONF"
+        "$MODULES_CONF"
+        "$KERNEL_CONFIG"
+    )
+    
+    local missing_configs=()
+    
+    for config in "${required_configs[@]}"; do
+        if [[ ! -f "$config" ]]; then
+            missing_configs+=("$config")
+        else
+            log_info "✓ Configuration found: $(basename "$config")"
+        fi
+    done
+    
+    if [[ ${#missing_configs[@]} -gt 0 ]]; then
+        log_error "Missing configuration files:"
+        for config in "${missing_configs[@]}"; do
+            log_error "  - $config"
+        done
+        log_error "Run the setup script or create configuration files manually"
+        return 1
+    fi
+    
+    # Check zinit configuration directory
+    if [[ ! -d "$ZINIT_CONFIG_DIR" ]]; then
+        log_error "zinit configuration directory not found: ${ZINIT_CONFIG_DIR}"
+        return 1
+    fi
+    
+    log_info "All configuration files verified"
+}
+
+# Main build process
+function main_build_process() {
+    section_header "Starting Zero OS Alpine Initramfs Build"
+    
+    local start_time=$(date +%s)
+    
+    # Phase 1: Extract Alpine miniroot
+    alpine_extract_miniroot "$INSTALL_DIR" "$ALPINE_VERSION"
+    
+    # Phase 2: Configure Alpine system
+    alpine_configure_repos "$INSTALL_DIR" "$ALPINE_VERSION"
+    alpine_configure_system "$INSTALL_DIR"
+    
+    # Phase 3: Install Alpine packages (NO OpenRC)
+    alpine_install_packages "$INSTALL_DIR" "$PACKAGES_LIST"
+    
+    # Phase 4: Build and install ThreeFold components
+    components_parse_sources_conf "$SOURCES_CONF" "$COMPONENTS_DIR"
+    
+    # Phase 5: Verify component installation
+    components_verify_installation
+    
+    # Phase 6: Setup zinit as init system
+    initramfs_setup_zinit "$INSTALL_DIR" "$ZINIT_CONFIG_DIR"
+    
+    # Phase 7: Setup 2-stage module loading
+    initramfs_setup_modules "$INSTALL_DIR" "$MODULES_CONF" "$KERNEL_VERSION"
+    
+    # Phase 8: Aggressive cleanup for size optimization
+    alpine_aggressive_cleanup "$INSTALL_DIR"
+    
+    # Phase 9: Strip and UPX all binaries
+    initramfs_strip_and_upx "$INSTALL_DIR"
+    
+    # Phase 10: Validate initramfs
+    initramfs_validate "$INSTALL_DIR"
+    
+    # Phase 11: Create initramfs archive
+    local initramfs_archive="${DIST_DIR}/initramfs.cpio.xz"
+    initramfs_create_cpio "$INSTALL_DIR" "$initramfs_archive"
+    
+    # Phase 12: Test archive integrity
+    initramfs_test_archive "$initramfs_archive"
+    
+    # Phase 13: Build kernel with embedded initramfs
+    local kernel_output="${DIST_DIR}/vmlinuz.efi"
+    kernel_build_with_initramfs "$KERNEL_CONFIG" "$initramfs_archive" "$kernel_output"
+    
+    # Phase 14: Run boot tests (unless skipped)
+    if [[ "$SKIP_TESTS" != "true" ]]; then
+        testing_run_all "$kernel_output"
+    else
+        log_info "Skipping boot tests as requested"
+    fi
+    
+    # Calculate build time
+    local end_time=$(date +%s)
+    local build_time=$((end_time - start_time))
+    local build_minutes=$((build_time / 60))
+    local build_seconds=$((build_time % 60))
+    
+    section_header "Build Complete"
+    log_info "Build time: ${build_minutes}m ${build_seconds}s"
+    log_info "Output files:"
+    log_info "  Kernel: ${kernel_output} ($(get_file_size "$kernel_output"))"
+    log_info "  Initramfs: ${initramfs_archive} ($(get_file_size "$initramfs_archive"))"
+}
+
+# Cleanup build artifacts
+function cleanup_build_artifacts() {
+    if [[ "$KEEP_ARTIFACTS" != "true" ]]; then
+        section_header "Cleaning Build Artifacts"
+        
+        components_cleanup "$COMPONENTS_DIR" "false"
+        kernel_cleanup "$KERNEL_DIR" "false"
+        
+        log_info "Build artifacts cleaned"
+    else
+        log_info "Keeping build artifacts as requested"
+    fi
+}
+
+# Main function
+function main() {
+    # Parse command line arguments
+    parse_arguments "$@"
+    
+    # Show banner
+    echo ""
+    echo "=================================================="
+    echo "==     ZERO-OS ALPINE INITRAMFS BUILDER        =="
+    echo "==           ThreeFold Edition                  =="
+    echo "=================================================="
+    echo ""
+    
+    # Clean build if requested
+    if [[ "$CLEAN_BUILD" == "true" ]]; then
+        section_header "Clean Build Requested"
+        "$SCRIPT_DIR/clean.sh"
+    fi
+    
+    # Setup environment
+    setup_build_environment
+    
+    # Determine build method
+    if [[ "$USE_CONTAINER" == "auto" ]]; then
+        if in_container; then
+            log_info "Already in container, using native build"
+            main_build_process
+        elif command_exists "podman" || command_exists "docker"; then
+            log_info "Container runtime available, using container build"
+            docker_detect_runtime
+            docker_build_container
+            docker_run_build "./scripts/build.sh --no-container"
+        else
+            log_info "No container runtime, using native build"
+            main_build_process
+        fi
+    elif [[ "$USE_CONTAINER" == "true" ]]; then
+        docker_detect_runtime
+        docker_build_container
+        docker_run_build "./scripts/build.sh --no-container"
+    else
+        main_build_process
+    fi
+    
+    # Cleanup if requested
+    cleanup_build_artifacts
+    
+    section_header "Zero OS Build Complete"
+    log_info "Ready to deploy Zero OS with Alpine Linux and zinit"
+}
+
+# Run main function with all arguments
+main "$@"

scripts/clean.sh

@@ -0,0 +1,268 @@
+#!/bin/bash
+# Cleanup script for Zero OS Alpine Initramfs Builder
+
+set -euo pipefail
+
+# Script directory and project root detection
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+# Source common functions
+source "${SCRIPT_DIR}/lib/common.sh"
+
+# Cleanup configuration
+CLEAN_ALL="${CLEAN_ALL:-false}"
+CLEAN_DOWNLOADS="${CLEAN_DOWNLOADS:-false}"
+CLEAN_CONTAINER="${CLEAN_CONTAINER:-false}"
+
+# Display usage information
+function show_usage() {
+    cat << EOF
+Zero OS Build Cleanup Script
+
+Usage: $0 [OPTIONS]
+
+Options:
+  --all                Clean everything (artifacts + downloads + containers)
+  --downloads          Clean downloaded sources and components
+  --containers         Clean container images
+  --artifacts-only     Clean only build artifacts (default)
+  --help               Show this help message
+
+Environment Variables:
+  CLEAN_ALL            Clean everything (default: false)
+  CLEAN_DOWNLOADS      Clean downloaded sources (default: false) 
+  CLEAN_CONTAINER      Clean container images (default: false)
+
+Examples:
+  $0                   # Clean build artifacts only
+  $0 --all             # Complete cleanup
+  $0 --downloads       # Clean sources and keep artifacts
+EOF
+}
+
+# Parse command line arguments
+function parse_arguments() {
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            --all)
+                CLEAN_ALL="true"
+                CLEAN_DOWNLOADS="true"
+                CLEAN_CONTAINER="true"
+                shift
+                ;;
+            --downloads)
+                CLEAN_DOWNLOADS="true"
+                shift
+                ;;
+            --containers)
+                CLEAN_CONTAINER="true"
+                shift
+                ;;
+            --artifacts-only)
+                # This is the default, no action needed
+                shift
+                ;;
+            --help|-h)
+                show_usage
+                exit 0
+                ;;
+            *)
+                log_error "Unknown option: $1"
+                show_usage
+                exit 1
+                ;;
+        esac
+    done
+}
+
+# Clean build artifacts
+function clean_build_artifacts() {
+    section_header "Cleaning Build Artifacts"
+    
+    local artifacts_to_clean=(
+        "${PROJECT_ROOT}/initramfs"
+        "${PROJECT_ROOT}/dist"
+    )
+    
+    for artifact in "${artifacts_to_clean[@]}"; do
+        if [[ -d "$artifact" ]]; then
+            log_info "Removing: $artifact"
+            safe_rmdir "$artifact"
+        else
+            log_debug "Already clean: $artifact"
+        fi
+    done
+    
+    # Clean temporary files
+    local temp_files=(
+        "/tmp/alpine-miniroot*.tar.gz"
+        "/tmp/linux-*.tar.xz"
+        "/tmp/qemu-*.log"
+        "/tmp/cloud-hypervisor-*.log"
+    )
+    
+    for pattern in "${temp_files[@]}"; do
+        if ls $pattern 2>/dev/null; then
+            log_info "Removing temporary files: $pattern"
+            safe_execute rm -f $pattern
+        fi
+    done
+    
+    log_info "Build artifacts cleaned"
+}
+
+# Clean downloaded sources and components
+function clean_downloads() {
+    section_header "Cleaning Downloaded Sources and Components"
+    
+    local download_dirs=(
+        "${PROJECT_ROOT}/components"
+        "${PROJECT_ROOT}/kernel"
+    )
+    
+    for dir in "${download_dirs[@]}"; do
+        if [[ -d "$dir" ]]; then
+            log_info "Removing: $dir"
+            safe_rmdir "$dir"
+        else
+            log_debug "Already clean: $dir"
+        fi
+    done
+    
+    # Clean Rust cache if it exists in project
+    local rust_cache="${PROJECT_ROOT}/.cargo"
+    if [[ -d "$rust_cache" ]]; then
+        log_info "Removing Rust cache: $rust_cache"
+        safe_rmdir "$rust_cache"
+    fi
+    
+    log_info "Downloads and sources cleaned"
+}
+
+# Clean container images
+function clean_container_images() {
+    section_header "Cleaning Container Images"
+    
+    # Source docker functions if available
+    if [[ -f "${SCRIPT_DIR}/lib/docker.sh" ]]; then
+        source "${SCRIPT_DIR}/lib/docker.sh"
+        
+        # Detect container runtime
+        if docker_detect_runtime 2>/dev/null; then
+            docker_cleanup "false"
+        else
+            log_info "No container runtime detected"
+        fi
+    else
+        log_warn "Docker library not found, manual container cleanup may be needed"
+    fi
+    
+    log_info "Container images cleaned"
+}
+
+# Show disk space recovery
+function show_space_recovery() {
+    section_header "Disk Space Recovery"
+    
+    # Calculate space in current directory
+    local current_usage=$(du -sh "${PROJECT_ROOT}" 2>/dev/null | cut -f1 || echo "unknown")
+    log_info "Current project size: ${current_usage}"
+    
+    # Show what was cleaned
+    if [[ "$CLEAN_ALL" == "true" ]]; then
+        log_info "Complete cleanup performed:"
+        log_info "  ✓ Build artifacts removed"
+        log_info "  ✓ Downloaded sources removed"  
+        log_info "  ✓ Container images removed"
+    elif [[ "$CLEAN_DOWNLOADS" == "true" ]]; then
+        log_info "Partial cleanup performed:"
+        log_info "  ✓ Build artifacts removed"
+        log_info "  ✓ Downloaded sources removed"
+        log_info "  - Container images preserved"
+    else
+        log_info "Minimal cleanup performed:"
+        log_info "  ✓ Build artifacts removed"
+        log_info "  - Downloaded sources preserved"
+        log_info "  - Container images preserved"
+    fi
+}
+
+# Verify cleanup was successful
+function verify_cleanup() {
+    section_header "Verifying Cleanup"
+    
+    local remaining_artifacts=()
+    
+    # Check if artifacts were actually removed
+    if [[ -d "${PROJECT_ROOT}/initramfs" ]]; then
+        remaining_artifacts+=("initramfs/")
+    fi
+    
+    if [[ -d "${PROJECT_ROOT}/dist" ]]; then
+        remaining_artifacts+=("dist/")
+    fi
+    
+    if [[ "$CLEAN_DOWNLOADS" == "true" ]]; then
+        if [[ -d "${PROJECT_ROOT}/components" ]]; then
+            remaining_artifacts+=("components/")
+        fi
+        
+        if [[ -d "${PROJECT_ROOT}/kernel" ]]; then
+            remaining_artifacts+=("kernel/")
+        fi
+    fi
+    
+    if [[ ${#remaining_artifacts[@]} -gt 0 ]]; then
+        log_warn "Some artifacts may not have been cleaned:"
+        for artifact in "${remaining_artifacts[@]}"; do
+            log_warn "  - $artifact"
+        done
+        return 1
+    else
+        log_info "Cleanup verification passed"
+        return 0
+    fi
+}
+
+# Main function
+function main() {
+    # Parse command line arguments
+    parse_arguments "$@"
+    
+    echo ""
+    echo "=================================================="
+    echo "==     ZERO-OS BUILD CLEANUP                   =="
+    echo "=================================================="
+    echo ""
+    
+    log_info "Starting cleanup process"
+    log_info "Clean all: ${CLEAN_ALL}"
+    log_info "Clean downloads: ${CLEAN_DOWNLOADS}"
+    log_info "Clean containers: ${CLEAN_CONTAINER}"
+    
+    # Always clean build artifacts
+    clean_build_artifacts
+    
+    # Clean downloads if requested
+    if [[ "$CLEAN_DOWNLOADS" == "true" ]]; then
+        clean_downloads
+    fi
+    
+    # Clean containers if requested
+    if [[ "$CLEAN_CONTAINER" == "true" ]]; then
+        clean_container_images
+    fi
+    
+    # Show space recovery
+    show_space_recovery
+    
+    # Verify cleanup
+    verify_cleanup
+    
+    section_header "Cleanup Complete"
+    log_info "Project cleaned successfully"
+}
+
+# Run main function with all arguments
+main "$@"

scripts/lib/alpine.sh

@@ -0,0 +1,354 @@
+#!/bin/bash
+# Alpine miniroot and package operations
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Alpine configuration
+ALPINE_VERSION="${ALPINE_VERSION:-3.22}"
+ALPINE_ARCH="${ALPINE_ARCH:-x86_64}"
+ALPINE_MIRROR="${ALPINE_MIRROR:-https://dl-cdn.alpinelinux.org/alpine}"
+
+# Extract Alpine miniroot to target directory
+function alpine_extract_miniroot() {
+    local target_dir="$1"
+    local version="${2:-$ALPINE_VERSION}"
+    local arch="${3:-$ALPINE_ARCH}"
+    
+    section_header "Extracting Alpine Miniroot"
+    
+    local url="${ALPINE_MIRROR}/v${version}/releases/${arch}/alpine-minirootfs-${version}.0-${arch}.tar.gz"
+    local temp_file="/tmp/alpine-miniroot-${version}-${arch}.tar.gz"
+    
+    log_info "Alpine version: ${version}"
+    log_info "Architecture: ${arch}"
+    log_info "Target directory: ${target_dir}"
+    
+    # Clean target directory
+    if [[ -d "$target_dir" ]]; then
+        log_info "Cleaning existing target directory"
+        safe_rmdir "$target_dir"
+    fi
+    safe_mkdir "$target_dir"
+    
+    # Download miniroot
+    log_info "Downloading Alpine miniroot from: ${url}"
+    safe_execute wget --progress=dot:giga -O "$temp_file" "$url"
+    
+    # Verify download
+    if [[ ! -f "$temp_file" ]]; then
+        log_error "Failed to download Alpine miniroot"
+        return 1
+    fi
+    
+    local file_size=$(get_file_size "$temp_file")
+    log_info "Downloaded miniroot size: ${file_size}"
+    
+    # Extract miniroot
+    log_info "Extracting miniroot to: ${target_dir}"
+    safe_execute tar -xzf "$temp_file" -C "$target_dir"
+    
+    # Cleanup download
+    safe_execute rm "$temp_file"
+    
+    # Verify extraction
+    if [[ ! -f "${target_dir}/etc/alpine-release" ]]; then
+        log_error "Alpine miniroot extraction failed - missing alpine-release"
+        return 1
+    fi
+    
+    local alpine_release=$(cat "${target_dir}/etc/alpine-release")
+    log_info "Extracted Alpine release: ${alpine_release}"
+    log_info "Alpine miniroot extraction complete"
+}
+
+# Setup chroot environment for package operations
+function alpine_setup_chroot() {
+    local initramfs_dir="$1"
+    
+    section_header "Setting Up Alpine Chroot Environment"
+    
+    # Create essential directories
+    safe_mkdir "${initramfs_dir}/proc"
+    safe_mkdir "${initramfs_dir}/sys"
+    safe_mkdir "${initramfs_dir}/dev"
+    safe_mkdir "${initramfs_dir}/dev/pts"
+    safe_mkdir "${initramfs_dir}/tmp"
+    safe_mkdir "${initramfs_dir}/run"
+    
+    # Mount essential filesystems
+    log_info "Mounting essential filesystems in chroot"
+    
+    if ! mountpoint -q "${initramfs_dir}/proc" 2>/dev/null; then
+        safe_execute mount --bind /proc "${initramfs_dir}/proc"
+        export CLEANUP_MOUNTS="${CLEANUP_MOUNTS:-} ${initramfs_dir}/proc"
+    fi
+    
+    if ! mountpoint -q "${initramfs_dir}/sys" 2>/dev/null; then
+        safe_execute mount --bind /sys "${initramfs_dir}/sys"
+        export CLEANUP_MOUNTS="${CLEANUP_MOUNTS:-} ${initramfs_dir}/sys"
+    fi
+    
+    if ! mountpoint -q "${initramfs_dir}/dev" 2>/dev/null; then
+        safe_execute mount --bind /dev "${initramfs_dir}/dev"
+        export CLEANUP_MOUNTS="${CLEANUP_MOUNTS:-} ${initramfs_dir}/dev"
+    fi
+    
+    if ! mountpoint -q "${initramfs_dir}/dev/pts" 2>/dev/null; then
+        safe_execute mount --bind /dev/pts "${initramfs_dir}/dev/pts"
+        export CLEANUP_MOUNTS="${CLEANUP_MOUNTS:-} ${initramfs_dir}/dev/pts"
+    fi
+    
+    # Setup resolv.conf for package downloads
+    if [[ -f /etc/resolv.conf ]]; then
+        safe_copy /etc/resolv.conf "${initramfs_dir}/etc/resolv.conf"
+    fi
+    
+    log_info "Chroot environment setup complete"
+}
+
+# Cleanup chroot environment
+function alpine_cleanup_chroot() {
+    local initramfs_dir="$1"
+    
+    section_header "Cleaning Up Alpine Chroot Environment"
+    
+    # Unmount filesystems in reverse order
+    local mounts=(
+        "${initramfs_dir}/dev/pts"
+        "${initramfs_dir}/dev"
+        "${initramfs_dir}/sys"
+        "${initramfs_dir}/proc"
+    )
+    
+    for mount in "${mounts[@]}"; do
+        if mountpoint -q "$mount" 2>/dev/null; then
+            log_info "Unmounting: $mount"
+            safe_execute umount "$mount" || log_warn "Failed to unmount $mount"
+        fi
+    done
+    
+    # Clear cleanup list
+    export CLEANUP_MOUNTS=""
+    
+    log_info "Chroot cleanup complete"
+}
+
+# Install packages from packages.list (NO OpenRC)
+function alpine_install_packages() {
+    local initramfs_dir="$1"
+    local packages_file="$2"
+    
+    section_header "Installing Alpine Packages"
+    
+    if [[ ! -f "$packages_file" ]]; then
+        log_error "Packages file not found: ${packages_file}"
+        return 1
+    fi
+    
+    # Setup chroot environment
+    alpine_setup_chroot "$initramfs_dir"
+    
+    # Update package repositories
+    log_info "Updating package repositories"
+    safe_execute chroot "$initramfs_dir" apk update
+    
+    # Read packages from file (excluding comments and empty lines)
+    local packages=()
+    while IFS= read -r line; do
+        # Skip comments and empty lines
+        if [[ "$line" =~ ^[[:space:]]*# ]] || [[ -z "${line// }" ]]; then
+            continue
+        fi
+        packages+=("$line")
+    done < "$packages_file"
+    
+    if [[ ${#packages[@]} -eq 0 ]]; then
+        log_warn "No packages found in ${packages_file}"
+        alpine_cleanup_chroot "$initramfs_dir"
+        return 0
+    fi
+    
+    log_info "Installing ${#packages[@]} packages:"
+    for pkg in "${packages[@]}"; do
+        log_info "  - $pkg"
+    done
+    
+    # Install packages (NO OpenRC - explicitly exclude)
+    log_info "Installing packages with apk"
+    safe_execute chroot "$initramfs_dir" apk add --no-cache \
+        --no-scripts \
+        --clean-protected \
+        "${packages[@]}"
+    
+    # Verify critical packages are installed
+    local critical_packages=("busybox" "musl" "alpine-baselayout")
+    for pkg in "${critical_packages[@]}"; do
+        if ! chroot "$initramfs_dir" apk info | grep -q "^${pkg}"; then
+            log_error "Critical package missing: ${pkg}"
+            alpine_cleanup_chroot "$initramfs_dir"
+            return 1
+        fi
+    done
+    
+    # Ensure no OpenRC packages were installed
+    local openrc_packages=$(chroot "$initramfs_dir" apk info | grep -E "(openrc|sysvinit|systemd)" || true)
+    if [[ -n "$openrc_packages" ]]; then
+        log_warn "OpenRC-related packages detected:"
+        echo "$openrc_packages"
+        log_warn "These should be removed for zinit-only operation"
+    fi
+    
+    alpine_cleanup_chroot "$initramfs_dir"
+    log_info "Package installation complete"
+}
+
+# Aggressive cleanup to minimize size
+function alpine_aggressive_cleanup() {
+    local initramfs_dir="$1"
+    
+    section_header "Aggressive Alpine Cleanup"
+    
+    log_info "Starting cleanup in: ${initramfs_dir}"
+    
+    # Remove documentation and man pages
+    log_info "Removing documentation and man pages"
+    safe_rmdir "${initramfs_dir}/usr/share/doc"
+    safe_rmdir "${initramfs_dir}/usr/share/man"
+    safe_rmdir "${initramfs_dir}/usr/share/info"
+    safe_rmdir "${initramfs_dir}/usr/share/gtk-doc"
+    
+    # Remove locales except C/POSIX
+    log_info "Removing locales (keeping C/POSIX only)"
+    if [[ -d "${initramfs_dir}/usr/share/locale" ]]; then
+        find "${initramfs_dir}/usr/share/locale" -mindepth 1 -maxdepth 1 -type d \
+            ! -name 'C' ! -name 'POSIX' -exec rm -rf {} + 2>/dev/null || true
+    fi
+    
+    # Remove development headers and files
+    log_info "Removing development files"
+    safe_rmdir "${initramfs_dir}/usr/include"
+    safe_rmdir "${initramfs_dir}/usr/lib/pkgconfig"
+    safe_rmdir "${initramfs_dir}/usr/share/pkgconfig"
+    safe_rmdir "${initramfs_dir}/lib/pkgconfig"
+    
+    # Remove static libraries
+    log_info "Removing static libraries"
+    find "${initramfs_dir}" -name "*.a" -type f -delete 2>/dev/null || true
+    
+    # Remove APK cache and database backup
+    log_info "Removing APK cache and database backup"
+    safe_rmdir "${initramfs_dir}/var/cache/apk"
+    safe_rmdir "${initramfs_dir}/lib/apk/db"
+    find "${initramfs_dir}/var/lib/apk" -name "*.old" -delete 2>/dev/null || true
+    
+    # Remove kernel source and headers if present
+    log_info "Removing kernel development files"
+    safe_rmdir "${initramfs_dir}/usr/src"
+    safe_rmdir "${initramfs_dir}/lib/modules/*/build"
+    safe_rmdir "${initramfs_dir}/lib/modules/*/source"
+    
+    # Remove Python bytecode and cache
+    log_info "Removing Python cache files"
+    find "${initramfs_dir}" -name "__pycache__" -type d -exec rm -rf {} + 2>/dev/null || true
+    find "${initramfs_dir}" -name "*.pyc" -type f -delete 2>/dev/null || true
+    find "${initramfs_dir}" -name "*.pyo" -type f -delete 2>/dev/null || true
+    
+    # Remove test files and examples
+    log_info "Removing test files and examples"
+    find "${initramfs_dir}" -path "*/test*" -type d -exec rm -rf {} + 2>/dev/null || true
+    find "${initramfs_dir}" -path "*/example*" -type d -exec rm -rf {} + 2>/dev/null || true
+    
+    # Remove unnecessary files from usr/share
+    log_info "Cleaning usr/share directory"
+    local unwanted_share_dirs=(
+        "applications"
+        "icons"
+        "pixmaps"
+        "themes"
+        "fonts"
+        "sounds"
+        "desktop-directories"
+        "mime"
+        "glib-2.0/schemas"
+    )
+    
+    for dir in "${unwanted_share_dirs[@]}"; do
+        safe_rmdir "${initramfs_dir}/usr/share/${dir}"
+    done
+    
+    # Remove large timezone data (keep only UTC)
+    log_info "Trimming timezone data"
+    if [[ -d "${initramfs_dir}/usr/share/zoneinfo" ]]; then
+        find "${initramfs_dir}/usr/share/zoneinfo" -type f ! -name "UTC" ! -path "*/posix/*" -delete 2>/dev/null || true
+    fi
+    
+    # Remove empty directories
+    log_info "Removing empty directories"
+    find "${initramfs_dir}" -type d -empty -delete 2>/dev/null || true
+    
+    # Calculate size after cleanup
+    local total_size=$(du -sh "${initramfs_dir}" 2>/dev/null | cut -f1 || echo "unknown")
+    log_info "Initramfs size after cleanup: ${total_size}"
+    
+    log_info "Aggressive cleanup complete"
+}
+
+# Configure Alpine repositories
+function alpine_configure_repos() {
+    local initramfs_dir="$1"
+    local version="${2:-$ALPINE_VERSION}"
+    
+    section_header "Configuring Alpine Repositories"
+    
+    local repos_file="${initramfs_dir}/etc/apk/repositories"
+    
+    # Create repositories file
+    cat > "$repos_file" << EOF
+${ALPINE_MIRROR}/v${version}/main
+${ALPINE_MIRROR}/v${version}/community
+EOF
+    
+    log_info "Configured Alpine repositories for version ${version}"
+}
+
+# Set Alpine system settings
+function alpine_configure_system() {
+    local initramfs_dir="$1"
+    
+    section_header "Configuring Alpine System Settings"
+    
+    # Set hostname
+    echo "zero-os" > "${initramfs_dir}/etc/hostname"
+    
+    # Configure hosts file
+    cat > "${initramfs_dir}/etc/hosts" << 'EOF'
+127.0.0.1	localhost localhost.localdomain
+::1		localhost localhost.localdomain
+EOF
+    
+    # Set timezone to UTC
+    if [[ -f "${initramfs_dir}/usr/share/zoneinfo/UTC" ]]; then
+        safe_execute ln -sf /usr/share/zoneinfo/UTC "${initramfs_dir}/etc/localtime"
+    fi
+    
+    # Configure minimal profile
+    cat > "${initramfs_dir}/etc/profile" << 'EOF'
+export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+export PS1='\h:\w\$ '
+export HOME=/root
+export TERM=xterm
+umask 022
+EOF
+    
+    # Set root shell
+    safe_execute chroot "$initramfs_dir" chsh -s /bin/sh root
+    
+    log_info "Alpine system configuration complete"
+}
+
+# Export functions
+export -f alpine_extract_miniroot alpine_setup_chroot alpine_cleanup_chroot
+export -f alpine_install_packages alpine_aggressive_cleanup
+export -f alpine_configure_repos alpine_configure_system

scripts/lib/common.sh

@@ -0,0 +1,238 @@
+#!/bin/bash
+# Common functions and utilities for Zero OS Alpine Initramfs Builder
+
+# Strict error handling
+set -euo pipefail
+
+# Script directory detection (only if not already set)
+if [[ -z "${SCRIPT_DIR:-}" ]]; then
+    SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+fi
+if [[ -z "${PROJECT_ROOT:-}" ]]; then
+    PROJECT_ROOT="$(dirname "$(dirname "$SCRIPT_DIR")")"
+fi
+
+# Colors for output (if terminal supports it)
+if [[ -t 1 ]]; then
+    RED='\033[0;31m'
+    GREEN='\033[0;32m'
+    YELLOW='\033[1;33m'
+    BLUE='\033[0;34m'
+    NC='\033[0m' # No Color
+else
+    RED=''
+    GREEN=''
+    YELLOW=''
+    BLUE=''
+    NC=''
+fi
+
+# Logging functions
+function log_info() {
+    local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
+    echo -e "${GREEN}[INFO]${NC} ${timestamp} - $*" >&2
+}
+
+function log_warn() {
+    local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
+    echo -e "${YELLOW}[WARN]${NC} ${timestamp} - $*" >&2
+}
+
+function log_error() {
+    local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
+    echo -e "${RED}[ERROR]${NC} ${timestamp} - $*" >&2
+}
+
+function log_debug() {
+    local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
+    if [[ "${DEBUG:-0}" == "1" ]]; then
+        echo -e "${BLUE}[DEBUG]${NC} ${timestamp} - $*" >&2
+    fi
+}
+
+# Command execution with full transparency
+function safe_execute() {
+    local cmd="$*"
+    log_info "Executing: ${cmd}"
+    
+    if [[ "${DEBUG:-0}" == "1" ]]; then
+        # In debug mode, show all output
+        if ! ${cmd}; then
+            log_error "Command failed: ${cmd}"
+            exit 1
+        fi
+    else
+        # Normal mode, capture output and show only on error
+        local output
+        if ! output=$(${cmd} 2>&1); then
+            log_error "Command failed: ${cmd}"
+            log_error "Output: ${output}"
+            exit 1
+        fi
+    fi
+}
+
+# Section headers with clear text separators
+function section_header() {
+    local title="$1"
+    echo ""
+    echo "=================================================="
+    echo "SECTION: ${title}"
+    echo "=================================================="
+    log_info "Starting section: ${title}"
+}
+
+# Check if command exists
+function command_exists() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+# Check if we're running in a container
+function in_container() {
+    [[ -f /.dockerenv ]] || [[ -f /run/.containerenv ]] || grep -q 'container' /proc/1/cgroup 2>/dev/null
+}
+
+# Verify required tools are available
+function check_dependencies() {
+    local missing_deps=()
+    
+    # Core build tools
+    local required_tools=(
+        "git"
+        "wget" 
+        "tar"
+        "gzip"
+        "xz"
+        "cpio"
+        "strip"
+        "upx"
+        "rustc"
+        "cargo"
+    )
+    
+    for tool in "${required_tools[@]}"; do
+        if ! command_exists "$tool"; then
+            missing_deps+=("$tool")
+        fi
+    done
+    
+    # Check for container runtime (if not in container)
+    if ! in_container; then
+        if ! command_exists "podman" && ! command_exists "docker"; then
+            missing_deps+=("podman or docker")
+        fi
+    fi
+    
+    if [[ ${#missing_deps[@]} -gt 0 ]]; then
+        log_error "Missing required dependencies:"
+        for dep in "${missing_deps[@]}"; do
+            log_error "  - $dep"
+        done
+        return 1
+    fi
+    
+    log_info "All dependencies satisfied"
+    return 0
+}
+
+# Create directory safely
+function safe_mkdir() {
+    local dir="$1"
+    log_debug "Creating directory: ${dir}"
+    safe_execute mkdir -p "$dir"
+}
+
+# Remove directory safely
+function safe_rmdir() {
+    local dir="$1"
+    if [[ -d "$dir" ]]; then
+        log_debug "Removing directory: ${dir}"
+        safe_execute rm -rf "$dir"
+    fi
+}
+
+# Copy file/directory safely
+function safe_copy() {
+    local src="$1"
+    local dst="$2"
+    log_debug "Copying: ${src} -> ${dst}"
+    safe_execute cp -r "$src" "$dst"
+}
+
+# Check if path is absolute
+function is_absolute_path() {
+    [[ "$1" = /* ]]
+}
+
+# Resolve relative path to absolute
+function resolve_path() {
+    local path="$1"
+    if is_absolute_path "$path"; then
+        echo "$path"
+    else
+        echo "$(pwd)/$path"
+    fi
+}
+
+# Get file size in human readable format
+function get_file_size() {
+    local file="$1"
+    if [[ -f "$file" ]]; then
+        du -h "$file" | cut -f1
+    else
+        echo "0B"
+    fi
+}
+
+# Wait for file to exist with timeout
+function wait_for_file() {
+    local file="$1"
+    local timeout="${2:-30}"
+    local count=0
+    
+    while [[ ! -f "$file" && $count -lt $timeout ]]; do
+        sleep 1
+        ((count++))
+    done
+    
+    [[ -f "$file" ]]
+}
+
+# Cleanup function for traps
+function cleanup_on_exit() {
+    local exit_code=$?
+    log_info "Build process exiting with code: ${exit_code}"
+    
+    # Unmount any mounted filesystems
+    if [[ -n "${CLEANUP_MOUNTS:-}" ]]; then
+        for mount in $CLEANUP_MOUNTS; do
+            if mountpoint -q "$mount" 2>/dev/null; then
+                log_info "Unmounting: $mount"
+                umount "$mount" 2>/dev/null || true
+            fi
+        done
+    fi
+    
+    exit $exit_code
+}
+
+# Set up exit trap
+trap cleanup_on_exit EXIT INT TERM
+
+# Load build configuration after functions are defined
+BUILD_CONF="${PROJECT_ROOT}/config/build.conf"
+if [[ -f "$BUILD_CONF" ]]; then
+    log_debug "Loading build configuration from: ${BUILD_CONF}"
+    source "$BUILD_CONF"
+else
+    log_warn "Build configuration not found: ${BUILD_CONF}"
+    log_warn "Using default values"
+fi
+
+# Export common variables
+export SCRIPT_DIR PROJECT_ROOT
+export -f log_info log_warn log_error log_debug
+export -f safe_execute section_header
+export -f command_exists in_container check_dependencies
+export -f safe_mkdir safe_rmdir safe_copy
+export -f is_absolute_path resolve_path get_file_size wait_for_file

scripts/lib/components.sh

@@ -0,0 +1,448 @@
+#!/bin/bash
+# Component download and build system for ThreeFold Zero OS
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Component configuration
+RUST_TARGET="${RUST_TARGET:-x86_64-unknown-linux-musl}"
+CARGO_TARGET_DIR="${CARGO_TARGET_DIR:-target}"
+
+# Parse and process all components from sources.conf
+function components_parse_sources_conf() {
+    local sources_file="$1"
+    local components_dir="$2"
+    local install_dir="${INSTALL_DIR:-${PROJECT_ROOT}/initramfs}"
+    
+    section_header "Parsing Sources Configuration"
+    
+    if [[ ! -f "$sources_file" ]]; then
+        log_error "Sources file not found: ${sources_file}"
+        return 1
+    fi
+    
+    # Ensure components directory exists
+    safe_mkdir "$components_dir"
+    
+    # Export install directory for build functions
+    export INSTALL_DIR="$install_dir"
+    
+    log_info "Processing components from: ${sources_file}"
+    log_info "Components directory: ${components_dir}"
+    log_info "Install directory: ${install_dir}"
+    
+    local component_count=0
+    
+    # Process each line in sources.conf
+    while IFS=: read -r type name url version build_func extra; do
+        # Skip comments and empty lines
+        if [[ "$type" =~ ^[[:space:]]*# ]] || [[ -z "${type// }" ]]; then
+            continue
+        fi
+        
+        # Trim whitespace
+        type=$(echo "$type" | xargs)
+        name=$(echo "$name" | xargs)
+        url=$(echo "$url" | xargs)
+        version=$(echo "$version" | xargs)
+        build_func=$(echo "$build_func" | xargs)
+        extra=$(echo "$extra" | xargs)
+        
+        if [[ -z "$type" || -z "$name" || -z "$url" || -z "$version" || -z "$build_func" ]]; then
+            log_warn "Skipping invalid line: ${type}:${name}:${url}:${version}:${build_func}:${extra}"
+            continue
+        fi
+        
+        ((component_count++))
+        log_info "Processing component ${component_count}: ${name} (${type})"
+        
+        # Download component
+        case "$type" in
+            "git")
+                components_download_git "$name" "$url" "$version" "$components_dir"
+                ;;
+            "release")
+                components_download_release "$name" "$url" "$version" "$components_dir" "$extra"
+                ;;
+            *)
+                log_error "Unknown component type: $type"
+                return 1
+                ;;
+        esac
+        
+        # Build and install component
+        components_build_component "$name" "$build_func" "$components_dir"
+        
+    done < "$sources_file"
+    
+    if [[ $component_count -eq 0 ]]; then
+        log_warn "No components found in sources configuration"
+    else
+        log_info "Processed ${component_count} components successfully"
+    fi
+}
+
+# Download Git repository
+function components_download_git() {
+    local name="$1"
+    local url="$2"
+    local version="$3"
+    local components_dir="$4"
+    
+    section_header "Downloading Git Component: ${name}"
+    
+    local target_dir="${components_dir}/${name}"
+    
+    log_info "Repository: ${url}"
+    log_info "Version/Branch: ${version}"
+    log_info "Target directory: ${target_dir}"
+    
+    if [[ -d "$target_dir" ]]; then
+        log_info "Component ${name} already exists, updating..."
+        safe_execute cd "$target_dir"
+        safe_execute git fetch --all
+        safe_execute git checkout "$version"
+        safe_execute git pull origin "$version" 2>/dev/null || log_info "Already up to date"
+    else
+        log_info "Cloning ${name} from ${url}"
+        safe_execute git clone --depth 1 --branch "$version" "$url" "$target_dir"
+    fi
+    
+    # Verify checkout
+    safe_execute cd "$target_dir"
+    local current_ref=$(git rev-parse HEAD)
+    log_info "Current commit: ${current_ref}"
+    
+    log_info "Git component download complete: ${name}"
+}
+
+# Download release binary/archive
+function components_download_release() {
+    local name="$1"
+    local url="$2"
+    local version="$3"
+    local components_dir="$4"
+    local extra="$5"
+    
+    section_header "Downloading Release Component: ${name}"
+    
+    local target_dir="${components_dir}/${name}"
+    local filename=$(basename "$url")
+    
+    log_info "Release URL: ${url}"
+    log_info "Version: ${version}"
+    log_info "Target directory: ${target_dir}"
+    
+    safe_mkdir "$target_dir"
+    
+    # Download release
+    log_info "Downloading release: ${filename}"
+    safe_execute wget --progress=dot:giga -O "${target_dir}/${filename}" "$url"
+    
+    # Verify download
+    if [[ ! -f "${target_dir}/${filename}" ]]; then
+        log_error "Failed to download release: ${filename}"
+        return 1
+    fi
+    
+    local file_size=$(get_file_size "${target_dir}/${filename}")
+    log_info "Downloaded file size: ${file_size}"
+    
+    # Handle extra options (like rename)
+    if [[ -n "$extra" ]]; then
+        components_process_extra_options "$target_dir" "$filename" "$extra"
+    fi
+    
+    log_info "Release component download complete: ${name}"
+}
+
+# Process extra options for components
+function components_process_extra_options() {
+    local target_dir="$1"
+    local filename="$2"
+    local extra="$3"
+    
+    log_info "Processing extra options: ${extra}"
+    
+    # Handle rename option
+    if [[ "$extra" =~ rename=(.+) ]]; then
+        local new_name="${BASH_REMATCH[1]}"
+        log_info "Renaming ${filename} to ${new_name}"
+        safe_execute mv "${target_dir}/${filename}" "${target_dir}/${new_name}"
+    fi
+    
+    # Handle extract option for archives
+    if [[ "$extra" =~ extract ]]; then
+        log_info "Extracting archive: ${filename}"
+        safe_execute cd "$target_dir"
+        case "$filename" in
+            *.tar.gz|*.tgz)
+                safe_execute tar -xzf "$filename"
+                ;;
+            *.tar.bz2|*.tbz2)
+                safe_execute tar -xjf "$filename"
+                ;;
+            *.tar.xz|*.txz)
+                safe_execute tar -xJf "$filename"
+                ;;
+            *.zip)
+                safe_execute unzip "$filename"
+                ;;
+            *)
+                log_warn "Unknown archive format: ${filename}"
+                ;;
+        esac
+    fi
+}
+
+# Build component using specified build function
+function components_build_component() {
+    local name="$1"
+    local build_func="$2"
+    local components_dir="$3"
+    
+    section_header "Building Component: ${name}"
+    
+    local component_dir="${components_dir}/${name}"
+    
+    if [[ ! -d "$component_dir" ]]; then
+        log_error "Component directory not found: ${component_dir}"
+        return 1
+    fi
+    
+    # Change to component directory
+    safe_execute cd "$component_dir"
+    
+    log_info "Build function: ${build_func}"
+    log_info "Working directory: $(pwd)"
+    
+    # Check if build function exists
+    if ! declare -f "$build_func" >/dev/null; then
+        log_error "Build function not found: ${build_func}"
+        return 1
+    fi
+    
+    # Call the specific build function
+    log_info "Executing build function: ${build_func}"
+    "$build_func" "$name" "$component_dir"
+    
+    log_info "Component build complete: ${name}"
+}
+
+# Setup Rust environment for musl builds
+function components_setup_rust_env() {
+    section_header "Setting Up Rust Environment"
+    
+    # Ensure musl target is installed
+    if ! rustup target list --installed | grep -q "$RUST_TARGET"; then
+        log_info "Installing Rust target: ${RUST_TARGET}"
+        safe_execute rustup target add "$RUST_TARGET"
+    else
+        log_info "Rust target already installed: ${RUST_TARGET}"
+    fi
+    
+    # Set environment variables for static linking
+    export RUSTFLAGS="-C target-feature=+crt-static"
+    export CC_x86_64_unknown_linux_musl="musl-gcc"
+    export CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER="musl-gcc"
+    
+    log_info "Rust environment configured for musl builds"
+    log_info "RUST_TARGET: ${RUST_TARGET}"
+    log_info "RUSTFLAGS: ${RUSTFLAGS}"
+}
+
+# Build function for zinit (standard Rust build)
+function build_zinit() {
+    local name="$1"
+    local component_dir="$2"
+    
+    section_header "Building zinit with musl target"
+    
+    components_setup_rust_env
+    
+    log_info "Building zinit from: ${component_dir}"
+    
+    # Build with musl target
+    safe_execute cargo build --release --target "$RUST_TARGET"
+    
+    # Find and install binary
+    local binary_path="target/${RUST_TARGET}/release/zinit"
+    if [[ ! -f "$binary_path" ]]; then
+        log_error "zinit binary not found at: ${binary_path}"
+        return 1
+    fi
+    
+    # Install to initramfs
+    safe_mkdir "${INSTALL_DIR}/sbin"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/sbin/zinit"
+    safe_execute chmod +x "${INSTALL_DIR}/sbin/zinit"
+    
+    local binary_size=$(get_file_size "${INSTALL_DIR}/sbin/zinit")
+    log_info "Installed zinit binary (${binary_size}) to: ${INSTALL_DIR}/sbin/zinit"
+}
+
+# Build function for rfs (standard Rust build)
+function build_rfs() {
+    local name="$1"
+    local component_dir="$2"
+    
+    section_header "Building rfs with musl target"
+    
+    components_setup_rust_env
+    
+    log_info "Building rfs from: ${component_dir}"
+    
+    # Build with musl target
+    safe_execute cargo build --release --target "$RUST_TARGET"
+    
+    # Find and install binary
+    local binary_path="target/${RUST_TARGET}/release/rfs"
+    if [[ ! -f "$binary_path" ]]; then
+        log_error "rfs binary not found at: ${binary_path}"
+        return 1
+    fi
+    
+    # Install to initramfs
+    safe_mkdir "${INSTALL_DIR}/usr/bin"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/usr/bin/rfs"
+    safe_execute chmod +x "${INSTALL_DIR}/usr/bin/rfs"
+    
+    local binary_size=$(get_file_size "${INSTALL_DIR}/usr/bin/rfs")
+    log_info "Installed rfs binary (${binary_size}) to: ${INSTALL_DIR}/usr/bin/rfs"
+}
+
+# Build function for mycelium (special subdirectory build)
+function build_mycelium() {
+    local name="$1"
+    local component_dir="$2"
+    
+    section_header "Building mycelium with musl target (special directory)"
+    
+    components_setup_rust_env
+    
+    log_info "Building mycelium from: ${component_dir}"
+    
+    # Change to myceliumd subdirectory (special requirement)
+    local myceliumd_dir="${component_dir}/myceliumd"
+    if [[ ! -d "$myceliumd_dir" ]]; then
+        log_error "myceliumd directory not found at: ${myceliumd_dir}"
+        return 1
+    fi
+    
+    safe_execute cd "$myceliumd_dir"
+    log_info "Building in myceliumd subdirectory: $(pwd)"
+    
+    # Build with musl target
+    safe_execute cargo build --release --target "$RUST_TARGET"
+    
+    # Find and install binary (from target/x86.../release)
+    local binary_path="target/${RUST_TARGET}/release/mycelium"
+    if [[ ! -f "$binary_path" ]]; then
+        log_error "mycelium binary not found at: ${binary_path}"
+        return 1
+    fi
+    
+    # Install to initramfs
+    safe_mkdir "${INSTALL_DIR}/usr/bin"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/usr/bin/mycelium"
+    safe_execute chmod +x "${INSTALL_DIR}/usr/bin/mycelium"
+    
+    local binary_size=$(get_file_size "${INSTALL_DIR}/usr/bin/mycelium")
+    log_info "Installed mycelium binary (${binary_size}) to: ${INSTALL_DIR}/usr/bin/mycelium"
+}
+
+# Install function for corex (pre-built binary)
+function install_corex() {
+    local name="$1"
+    local component_dir="$2"
+    
+    section_header "Installing corex binary"
+    
+    log_info "Installing corex from: ${component_dir}"
+    
+    # Find the corex binary (may have been renamed)
+    local binary_path
+    if [[ -f "${component_dir}/corex" ]]; then
+        binary_path="${component_dir}/corex"
+    elif [[ -f "${component_dir}/corex-2.1.4-amd64-linux-static" ]]; then
+        binary_path="${component_dir}/corex-2.1.4-amd64-linux-static"
+    else
+        log_error "corex binary not found in: ${component_dir}"
+        return 1
+    fi
+    
+    # Make executable and install
+    safe_execute chmod +x "$binary_path"
+    safe_mkdir "${INSTALL_DIR}/usr/bin"
+    safe_execute cp "$binary_path" "${INSTALL_DIR}/usr/bin/corex"
+    safe_execute chmod +x "${INSTALL_DIR}/usr/bin/corex"
+    
+    local binary_size=$(get_file_size "${INSTALL_DIR}/usr/bin/corex")
+    log_info "Installed corex binary (${binary_size}) to: ${INSTALL_DIR}/usr/bin/corex"
+}
+
+# Verify all built components
+function components_verify_installation() {
+    local install_dir="${INSTALL_DIR:-${PROJECT_ROOT}/initramfs}"
+    
+    section_header "Verifying Component Installation"
+    
+    # List of expected binaries and their locations
+    local expected_binaries=(
+        "sbin/zinit"
+        "usr/bin/rfs"
+        "usr/bin/mycelium"
+        "usr/bin/corex"
+    )
+    
+    local missing_count=0
+    
+    for binary in "${expected_binaries[@]}"; do
+        local full_path="${install_dir}/${binary}"
+        if [[ -f "$full_path" && -x "$full_path" ]]; then
+            local size=$(get_file_size "$full_path")
+            log_info "✓ ${binary} (${size})"
+        else
+            log_error "✗ Missing or not executable: ${binary}"
+            ((missing_count++))
+        fi
+    done
+    
+    if [[ $missing_count -eq 0 ]]; then
+        log_info "All components installed successfully"
+        return 0
+    else
+        log_error "${missing_count} components missing or invalid"
+        return 1
+    fi
+}
+
+# Clean component build artifacts
+function components_cleanup() {
+    local components_dir="$1"
+    local keep_sources="${2:-false}"
+    
+    section_header "Cleaning Component Build Artifacts"
+    
+    if [[ "$keep_sources" == "true" ]]; then
+        log_info "Keeping source directories, cleaning build artifacts only"
+        
+        # Clean Rust build artifacts
+        find "$components_dir" -name "target" -type d -exec rm -rf {} + 2>/dev/null || true
+        find "$components_dir" -name "Cargo.lock" -type f -delete 2>/dev/null || true
+        
+    else
+        log_info "Removing all component directories"
+        safe_rmdir "$components_dir"
+    fi
+    
+    log_info "Component cleanup complete"
+}
+
+# Export functions
+export -f components_parse_sources_conf
+export -f components_download_git components_download_release components_process_extra_options
+export -f components_build_component components_setup_rust_env
+export -f build_zinit build_rfs build_mycelium install_corex
+export -f components_verify_installation components_cleanup

scripts/lib/docker.sh

@@ -0,0 +1,276 @@
+#!/bin/bash
+# Container management for rootless Docker/Podman builds
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Container configuration
+CONTAINER_RUNTIME=""
+BUILDER_IMAGE="zero-os-builder:latest"
+ALPINE_VERSION="${ALPINE_VERSION:-3.22}"
+
+# Detect available container runtime
+function docker_detect_runtime() {
+    section_header "Detecting Container Runtime"
+    
+    if command_exists "podman"; then
+        CONTAINER_RUNTIME="podman"
+        log_info "Using Podman as container runtime"
+    elif command_exists "docker"; then
+        CONTAINER_RUNTIME="docker"
+        log_info "Using Docker as container runtime"
+    else
+        log_error "No container runtime found (podman or docker required)"
+        return 1
+    fi
+    
+    # Check if rootless setup is working
+    docker_verify_rootless
+}
+
+# Verify rootless container setup
+function docker_verify_rootless() {
+    section_header "Verifying Rootless Container Setup"
+    
+    log_info "Checking ${CONTAINER_RUNTIME} rootless configuration"
+    safe_execute ${CONTAINER_RUNTIME} system info
+    
+    # Test basic rootless functionality
+    log_info "Testing rootless container execution"
+    safe_execute ${CONTAINER_RUNTIME} run --rm alpine:${ALPINE_VERSION} echo "Rootless container test successful"
+    
+    log_info "Rootless container setup verified"
+}
+
+# Build container image with build tools
+function docker_build_container() {
+    local dockerfile_path="${1:-${PROJECT_ROOT}/Dockerfile}"
+    local tag="${2:-${BUILDER_IMAGE}}"
+    
+    section_header "Building Container Image"
+    
+    # Create Dockerfile if it doesn't exist
+    if [[ ! -f "$dockerfile_path" ]]; then
+        docker_create_dockerfile "$dockerfile_path"
+    fi
+    
+    log_info "Building container image: ${tag}"
+    safe_execute ${CONTAINER_RUNTIME} build -t "${tag}" -f "${dockerfile_path}" "${PROJECT_ROOT}"
+    
+    log_info "Container image built successfully: ${tag}"
+}
+
+# Create optimized Dockerfile for build environment
+function docker_create_dockerfile() {
+    local dockerfile_path="$1"
+    
+    section_header "Creating Dockerfile"
+    
+    cat > "$dockerfile_path" << 'EOF'
+FROM alpine:3.22
+
+# Install build dependencies
+RUN apk add --no-cache \
+    build-base \
+    rust \
+    cargo \
+    upx \
+    git \
+    wget \
+    tar \
+    gzip \
+    xz \
+    cpio \
+    binutils \
+    linux-headers \
+    musl-dev \
+    pkgconfig \
+    openssl-dev
+
+# Add Rust musl target
+RUN rustup target add x86_64-unknown-linux-musl
+
+# Create non-root user for builds
+RUN adduser -D -s /bin/sh builder && \
+    chown -R builder:builder /home/builder
+
+# Set working directory
+WORKDIR /workspace
+
+# Switch to non-root user
+USER builder
+
+# Set environment variables for static linking
+ENV RUSTFLAGS="-C target-feature=+crt-static"
+ENV CC_x86_64_unknown_linux_musl="musl-gcc"
+ENV CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER="musl-gcc"
+
+CMD ["/bin/sh"]
+EOF
+
+    log_info "Created Dockerfile: ${dockerfile_path}"
+}
+
+# Start rootless container for building
+function docker_start_rootless() {
+    local image="${1:-${BUILDER_IMAGE}}"
+    local workdir="${2:-/workspace}"
+    local command="${3:-/bin/sh}"
+    
+    section_header "Starting Rootless Container"
+    
+    # Setup volume mounts
+    local user_args="--user $(id -u):$(id -g)"
+    local volume_args="-v ${PROJECT_ROOT}:${workdir}"
+    local env_args=""
+    
+    # Pass through environment variables
+    local env_vars=(
+        "DEBUG"
+        "ALPINE_VERSION"
+        "KERNEL_VERSION"
+        "RUST_TARGET"
+        "OPTIMIZATION_LEVEL"
+    )
+    
+    for var in "${env_vars[@]}"; do
+        if [[ -n "${!var:-}" ]]; then
+            env_args="${env_args} -e ${var}=${!var}"
+        fi
+    done
+    
+    log_info "Starting container with rootless privileges"
+    safe_execute ${CONTAINER_RUNTIME} run --rm -it \
+        ${user_args} \
+        ${volume_args} \
+        ${env_args} \
+        -w "${workdir}" \
+        "${image}" \
+        ${command}
+}
+
+# Run build command in container
+function docker_run_build() {
+    local build_script="${1:-./scripts/build.sh}"
+    local image="${2:-${BUILDER_IMAGE}}"
+    
+    section_header "Running Build in Container"
+    
+    # Ensure build script is executable
+    safe_execute chmod +x "${PROJECT_ROOT}/${build_script}"
+    
+    # Setup container arguments
+    local user_args="--user $(id -u):$(id -g)"
+    local volume_args="-v ${PROJECT_ROOT}:/workspace"
+    local work_args="-w /workspace"
+    
+    log_info "Executing build script in container: ${build_script}"
+    safe_execute ${CONTAINER_RUNTIME} run --rm \
+        ${user_args} \
+        ${volume_args} \
+        ${work_args} \
+        "${image}" \
+        ${build_script}
+}
+
+# Commit container state for reuse
+function docker_commit_builder() {
+    local container_id="$1"
+    local new_tag="${2:-${BUILDER_IMAGE}-cached}"
+    
+    section_header "Committing Builder Container"
+    
+    log_info "Committing container ${container_id} as ${new_tag}"
+    safe_execute ${CONTAINER_RUNTIME} commit "${container_id}" "${new_tag}"
+    
+    log_info "Container committed successfully: ${new_tag}"
+}
+
+# Clean up container images
+function docker_cleanup() {
+    local keep_builder="${1:-false}"
+    
+    section_header "Cleaning Up Container Images"
+    
+    if [[ "$keep_builder" != "true" ]]; then
+        log_info "Removing builder images"
+        safe_execute ${CONTAINER_RUNTIME} rmi "${BUILDER_IMAGE}" || true
+        safe_execute ${CONTAINER_RUNTIME} rmi "${BUILDER_IMAGE}-cached" || true
+    fi
+    
+    log_info "Pruning unused containers and images"
+    safe_execute ${CONTAINER_RUNTIME} system prune -f
+    
+    log_info "Container cleanup complete"
+}
+
+# Check container runtime capabilities
+function docker_check_capabilities() {
+    section_header "Checking Container Capabilities"
+    
+    # Check user namespace support
+    if [[ -f /proc/sys/user/max_user_namespaces ]]; then
+        local max_namespaces=$(cat /proc/sys/user/max_user_namespaces)
+        log_info "User namespaces available: ${max_namespaces}"
+        
+        if [[ "$max_namespaces" -eq 0 ]]; then
+            log_warn "User namespaces are disabled, rootless containers may not work"
+        fi
+    fi
+    
+    # Check subuid/subgid configuration
+    local current_user=$(whoami)
+    if [[ -f /etc/subuid ]] && grep -q "^${current_user}:" /etc/subuid; then
+        log_info "subuid configured for user: ${current_user}"
+    else
+        log_warn "subuid not configured for user: ${current_user}"
+        log_warn "Run: echo '${current_user}:100000:65536' | sudo tee -a /etc/subuid"
+    fi
+    
+    if [[ -f /etc/subgid ]] && grep -q "^${current_user}:" /etc/subgid; then
+        log_info "subgid configured for user: ${current_user}"
+    else
+        log_warn "subgid not configured for user: ${current_user}"
+        log_warn "Run: echo '${current_user}:100000:65536' | sudo tee -a /etc/subgid"
+    fi
+}
+
+# Setup rootless environment
+function docker_setup_rootless() {
+    section_header "Setting Up Rootless Environment"
+    
+    local current_user=$(whoami)
+    
+    # Check if running as root
+    if [[ "$EUID" -eq 0 ]]; then
+        log_error "Do not run as root. Rootless containers require non-root user."
+        return 1
+    fi
+    
+    # Check and setup subuid/subgid if needed
+    if ! grep -q "^${current_user}:" /etc/subuid 2>/dev/null; then
+        log_info "Setting up subuid for ${current_user}"
+        echo "${current_user}:100000:65536" | sudo tee -a /etc/subuid
+    fi
+    
+    if ! grep -q "^${current_user}:" /etc/subgid 2>/dev/null; then
+        log_info "Setting up subgid for ${current_user}"
+        echo "${current_user}:100000:65536" | sudo tee -a /etc/subgid
+    fi
+    
+    # Initialize container runtime if needed
+    if [[ "$CONTAINER_RUNTIME" == "podman" ]]; then
+        log_info "Initializing Podman for rootless use"
+        safe_execute podman system migrate || true
+    fi
+    
+    log_info "Rootless environment setup complete"
+}
+
+# Export functions
+export -f docker_detect_runtime docker_verify_rootless
+export -f docker_build_container docker_create_dockerfile
+export -f docker_start_rootless docker_run_build
+export -f docker_commit_builder docker_cleanup
+export -f docker_check_capabilities docker_setup_rootless

scripts/lib/initramfs.sh

@@ -0,0 +1,440 @@
+#!/bin/bash
+# Initramfs assembly and optimization
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Initramfs configuration
+INITRAMFS_COMPRESSION="${INITRAMFS_COMPRESSION:-xz}"
+XZ_COMPRESSION_LEVEL="${XZ_COMPRESSION_LEVEL:-9}"
+
+# Setup zinit as init system (replaces OpenRC completely)
+function initramfs_setup_zinit() {
+    local initramfs_dir="$1"
+    local zinit_config_dir="$2"
+    
+    section_header "Setting up zinit as init system"
+    
+    if [[ ! -d "$zinit_config_dir" ]]; then
+        log_error "zinit configuration directory not found: ${zinit_config_dir}"
+        return 1
+    fi
+    
+    # Verify zinit binary exists
+    if [[ ! -x "${initramfs_dir}/sbin/zinit" ]]; then
+        log_error "zinit binary not found or not executable: ${initramfs_dir}/sbin/zinit"
+        return 1
+    fi
+    
+    # Remove existing init (if any) and replace with zinit
+    log_info "Replacing system init with zinit"
+    safe_execute rm -f "${initramfs_dir}/sbin/init"
+    safe_execute ln -sf zinit "${initramfs_dir}/sbin/init"
+    
+    # Copy zinit configuration
+    log_info "Installing zinit configuration"
+    safe_mkdir "${initramfs_dir}/etc/zinit"
+    safe_copy "${zinit_config_dir}"/* "${initramfs_dir}/etc/zinit/"
+    
+    # Ensure proper permissions
+    safe_execute chmod 755 "${initramfs_dir}/sbin/zinit"
+    safe_execute chmod -R 644 "${initramfs_dir}/etc/zinit"
+    safe_execute find "${initramfs_dir}/etc/zinit" -name "*.sh" -exec chmod 755 {} \;
+    
+    # Create zinit working directories
+    safe_mkdir "${initramfs_dir}/var/log/zinit"
+    safe_mkdir "${initramfs_dir}/run/zinit"
+    
+    # Remove any OpenRC remnants (ensure complete replacement)
+    local openrc_paths=(
+        "/etc/init.d"
+        "/etc/runlevels"
+        "/etc/conf.d"
+        "/sbin/openrc"
+        "/sbin/rc-service"
+        "/sbin/rc-status"
+        "/sbin/rc-update"
+    )
+    
+    for path in "${openrc_paths[@]}"; do
+        if [[ -e "${initramfs_dir}${path}" ]]; then
+            log_info "Removing OpenRC remnant: ${path}"
+            safe_execute rm -rf "${initramfs_dir}${path}"
+        fi
+    done
+    
+    log_info "zinit setup complete - OpenRC completely replaced"
+}
+
+# Setup 2-stage module loading system
+function initramfs_setup_modules() {
+    local initramfs_dir="$1"
+    local modules_conf="$2"
+    local kernel_version="${3:-$(uname -r)}"
+    
+    section_header "Setting up 2-stage module loading"
+    
+    if [[ ! -f "$modules_conf" ]]; then
+        log_error "Modules configuration file not found: ${modules_conf}"
+        return 1
+    fi
+    
+    local modules_dir="${initramfs_dir}/lib/modules/${kernel_version}"
+    safe_mkdir "$modules_dir"
+    
+    # Create stage1 module list (critical boot modules)
+    log_info "Creating stage1 module list (critical boot modules)"
+    grep "^stage1:" "$modules_conf" | cut -d: -f2 > "${modules_dir}/stage1.list"
+    
+    # Create stage2 module list (extended hardware support)
+    log_info "Creating stage2 module list (extended hardware support)"
+    grep "^stage2:" "$modules_conf" | cut -d: -f2 > "${modules_dir}/stage2.list"
+    
+    # Create module loading scripts
+    initramfs_create_module_scripts "$initramfs_dir" "$kernel_version"
+    
+    # Count modules
+    local stage1_count=$(wc -l < "${modules_dir}/stage1.list" 2>/dev/null || echo 0)
+    local stage2_count=$(wc -l < "${modules_dir}/stage2.list" 2>/dev/null || echo 0)
+    
+    log_info "Module configuration complete:"
+    log_info "  Stage1 (critical): ${stage1_count} modules"
+    log_info "  Stage2 (extended): ${stage2_count} modules"
+}
+
+# Create module loading scripts for zinit
+function initramfs_create_module_scripts() {
+    local initramfs_dir="$1"
+    local kernel_version="$2"
+    
+    log_info "Creating module loading scripts"
+    
+    safe_mkdir "${initramfs_dir}/etc/zinit/init"
+    
+    # Stage1 module loading script (critical modules)
+    cat > "${initramfs_dir}/etc/zinit/init/stage1-modules.sh" << 'EOF'
+#!/bin/sh
+# Stage1 module loading - critical boot modules
+
+KERNEL_VERSION=$(uname -r)
+STAGE1_LIST="/lib/modules/${KERNEL_VERSION}/stage1.list"
+
+echo "Loading stage1 modules (critical boot)"
+
+if [ -f "$STAGE1_LIST" ]; then
+    while read -r module; do
+        if [ -n "$module" ] && [ "$module" != "#"* ]; then
+            echo "Loading critical module: $module"
+            modprobe "$module" 2>/dev/null || echo "Warning: Failed to load $module"
+        fi
+    done < "$STAGE1_LIST"
+else
+    echo "Warning: Stage1 module list not found: $STAGE1_LIST"
+fi
+
+echo "Stage1 module loading complete"
+EOF
+
+    # Stage2 module loading script (extended hardware)
+    cat > "${initramfs_dir}/etc/zinit/init/stage2-modules.sh" << 'EOF'
+#!/bin/sh
+# Stage2 module loading - extended hardware support
+
+KERNEL_VERSION=$(uname -r)
+STAGE2_LIST="/lib/modules/${KERNEL_VERSION}/stage2.list"
+
+echo "Loading stage2 modules (extended hardware)"
+
+if [ -f "$STAGE2_LIST" ]; then
+    while read -r module; do
+        if [ -n "$module" ] && [ "$module" != "#"* ]; then
+            echo "Loading hardware module: $module"
+            modprobe "$module" 2>/dev/null || echo "Info: Module $module not available"
+        fi
+    done < "$STAGE2_LIST"
+else
+    echo "Warning: Stage2 module list not found: $STAGE2_LIST"
+fi
+
+echo "Stage2 module loading complete"
+EOF
+
+    # Make scripts executable
+    safe_execute chmod 755 "${initramfs_dir}/etc/zinit/init/stage1-modules.sh"
+    safe_execute chmod 755 "${initramfs_dir}/etc/zinit/init/stage2-modules.sh"
+    
+    log_info "Module loading scripts created"
+}
+
+# Strip and UPX compress all binaries for maximum size optimization
+function initramfs_strip_and_upx() {
+    local initramfs_dir="$1"
+    
+    section_header "Stripping and UPX compressing binaries"
+    
+    local stripped_count=0
+    local upx_count=0
+    local failed_strip=0
+    local failed_upx=0
+    
+    # Find and process all executable files
+    log_info "Processing executable files..."
+    
+    while IFS= read -r -d '' file; do
+        # Check if it's a valid ELF executable
+        if file "$file" | grep -q "ELF.*executable"; then
+            log_debug "Processing executable: $file"
+            
+            # Strip debug symbols
+            if strip "$file" 2>/dev/null; then
+                ((stripped_count++))
+                log_debug "Stripped: $file"
+            else
+                ((failed_strip++))
+                log_debug "Failed to strip: $file"
+            fi
+            
+            # UPX compress (best compression)
+            if upx --best --force "$file" 2>/dev/null; then
+                ((upx_count++))
+                log_debug "UPX compressed: $file"
+            else
+                ((failed_upx++))
+                log_debug "Failed to UPX: $file"
+            fi
+        fi
+    done < <(find "$initramfs_dir" -type f -executable -print0)
+    
+    # Process shared libraries
+    log_info "Processing shared libraries..."
+    
+    local lib_stripped=0
+    local lib_failed=0
+    
+    while IFS= read -r -d '' file; do
+        if file "$file" | grep -q "ELF.*shared object"; then
+            log_debug "Processing library: $file"
+            
+            # Strip libraries (more conservative - keep function symbols)
+            if strip --strip-unneeded "$file" 2>/dev/null; then
+                ((lib_stripped++))
+                log_debug "Stripped library: $file"
+            else
+                ((lib_failed++))
+                log_debug "Failed to strip library: $file"
+            fi
+        fi
+    done < <(find "$initramfs_dir" -name "*.so*" -type f -print0)
+    
+    # Summary
+    log_info "Binary optimization complete:"
+    log_info "  Executables stripped: ${stripped_count} (${failed_strip} failed)"
+    log_info "  Executables UPX compressed: ${upx_count} (${failed_upx} failed)"
+    log_info "  Libraries stripped: ${lib_stripped} (${lib_failed} failed)"
+    
+    # Calculate space savings
+    local total_size=$(du -sb "$initramfs_dir" 2>/dev/null | cut -f1 || echo "0")
+    local total_mb=$((total_size / 1024 / 1024))
+    log_info "Total initramfs size after optimization: ${total_mb}MB"
+}
+
+# Create final initramfs.cpio.xz archive
+function initramfs_create_cpio() {
+    local initramfs_dir="$1"
+    local output_file="$2"
+    local compression="${3:-$INITRAMFS_COMPRESSION}"
+    
+    section_header "Creating initramfs.cpio.${compression}"
+    
+    if [[ ! -d "$initramfs_dir" ]]; then
+        log_error "Initramfs directory not found: ${initramfs_dir}"
+        return 1
+    fi
+    
+    # Ensure output directory exists
+    local output_dir=$(dirname "$output_file")
+    safe_mkdir "$output_dir"
+    
+    # Remove any existing output file
+    safe_execute rm -f "$output_file"
+    
+    log_info "Source directory: ${initramfs_dir}"
+    log_info "Output file: ${output_file}"
+    log_info "Compression: ${compression}"
+    
+    # Change to initramfs directory for relative paths
+    safe_execute cd "$initramfs_dir"
+    
+    case "$compression" in
+        "xz")
+            log_info "Creating XZ compressed CPIO archive"
+            safe_execute find . -print0 | cpio -o -H newc -0 | xz -${XZ_COMPRESSION_LEVEL} --check=crc32 > "$output_file"
+            ;;
+        "gzip"|"gz")
+            log_info "Creating gzip compressed CPIO archive"
+            safe_execute find . -print0 | cpio -o -H newc -0 | gzip -9 > "$output_file"
+            ;;
+        "zstd")
+            log_info "Creating zstd compressed CPIO archive"
+            safe_execute find . -print0 | cpio -o -H newc -0 | zstd -19 > "$output_file"
+            ;;
+        "none"|"uncompressed")
+            log_info "Creating uncompressed CPIO archive"
+            safe_execute find . -print0 | cpio -o -H newc -0 > "$output_file"
+            ;;
+        *)
+            log_error "Unsupported compression format: ${compression}"
+            return 1
+            ;;
+    esac
+    
+    # Verify output file was created
+    if [[ ! -f "$output_file" ]]; then
+        log_error "Failed to create initramfs archive: ${output_file}"
+        return 1
+    fi
+    
+    # Report final size
+    local final_size=$(get_file_size "$output_file")
+    local uncompressed_size=$(du -sh "$initramfs_dir" | cut -f1)
+    
+    log_info "Initramfs creation complete:"
+    log_info "  Uncompressed size: ${uncompressed_size}"
+    log_info "  Final archive size: ${final_size}"
+    log_info "  Archive: ${output_file}"
+}
+
+# Validate initramfs contents
+function initramfs_validate() {
+    local initramfs_dir="$1"
+    
+    section_header "Validating initramfs contents"
+    
+    local errors=0
+    
+    # Check essential files and directories
+    local essential_items=(
+        "sbin/init"
+        "sbin/zinit"
+        "bin/busybox"
+        "etc/zinit"
+        "lib"
+        "usr/bin"
+        "var"
+        "tmp"
+        "proc"
+        "sys"
+        "dev"
+    )
+    
+    for item in "${essential_items[@]}"; do
+        if [[ ! -e "${initramfs_dir}/${item}" ]]; then
+            log_error "Missing essential item: ${item}"
+            ((errors++))
+        else
+            log_debug "Found: ${item}"
+        fi
+    done
+    
+    # Check that init is properly linked to zinit
+    if [[ -L "${initramfs_dir}/sbin/init" ]]; then
+        local link_target=$(readlink "${initramfs_dir}/sbin/init")
+        if [[ "$link_target" == "zinit" ]]; then
+            log_info "✓ /sbin/init correctly linked to zinit"
+        else
+            log_error "✗ /sbin/init linked to wrong target: ${link_target}"
+            ((errors++))
+        fi
+    else
+        log_error "✗ /sbin/init is not a symbolic link"
+        ((errors++))
+    fi
+    
+    # Check zinit configuration
+    if [[ -f "${initramfs_dir}/etc/zinit/zinit.conf" ]]; then
+        log_info "✓ zinit configuration found"
+    else
+        log_error "✗ zinit configuration missing"
+        ((errors++))
+    fi
+    
+    # Verify no OpenRC remnants
+    local openrc_check=(
+        "etc/init.d"
+        "etc/runlevels"
+        "sbin/openrc"
+    )
+    
+    for path in "${openrc_check[@]}"; do
+        if [[ -e "${initramfs_dir}/${path}" ]]; then
+            log_warn "OpenRC remnant found: ${path}"
+        fi
+    done
+    
+    # Check component binaries
+    local component_binaries=(
+        "usr/bin/rfs"
+        "usr/bin/mycelium"
+        "usr/bin/corex"
+    )
+    
+    for binary in "${component_binaries[@]}"; do
+        if [[ -x "${initramfs_dir}/${binary}" ]]; then
+            log_info "✓ Component binary: ${binary}"
+        else
+            log_warn "Component binary missing or not executable: ${binary}"
+        fi
+    done
+    
+    if [[ $errors -eq 0 ]]; then
+        log_info "Initramfs validation passed"
+        return 0
+    else
+        log_error "Initramfs validation failed with ${errors} errors"
+        return 1
+    fi
+}
+
+# Test initramfs archive integrity
+function initramfs_test_archive() {
+    local archive_file="$1"
+    
+    section_header "Testing initramfs archive integrity"
+    
+    if [[ ! -f "$archive_file" ]]; then
+        log_error "Archive file not found: ${archive_file}"
+        return 1
+    fi
+    
+    # Test based on file extension
+    case "$archive_file" in
+        *.xz)
+            log_info "Testing XZ archive integrity"
+            safe_execute xz -t "$archive_file"
+            ;;
+        *.gz)
+            log_info "Testing gzip archive integrity"
+            safe_execute gzip -t "$archive_file"
+            ;;
+        *.zst)
+            log_info "Testing zstd archive integrity"
+            safe_execute zstd -t "$archive_file"
+            ;;
+        *.cpio)
+            log_info "Testing CPIO archive integrity"
+            safe_execute cpio -t < "$archive_file" >/dev/null
+            ;;
+        *)
+            log_warn "Unknown archive format, skipping integrity test"
+            return 0
+            ;;
+    esac
+    
+    log_info "Archive integrity test passed"
+}
+
+# Export functions
+export -f initramfs_setup_zinit initramfs_setup_modules initramfs_create_module_scripts
+export -f initramfs_strip_and_upx initramfs_create_cpio
+export -f initramfs_validate initramfs_test_archive

scripts/lib/kernel.sh

@@ -0,0 +1,265 @@
+#!/bin/bash
+# Kernel building with embedded initramfs
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Kernel configuration
+KERNEL_VERSION="${KERNEL_VERSION:-6.12.44}"
+KERNEL_SOURCE_URL="${KERNEL_SOURCE_URL:-https://cdn.kernel.org/pub/linux/kernel}"
+KERNEL_CONFIG_SOURCE="${KERNEL_CONFIG_SOURCE:-${PROJECT_ROOT}/configs/kernel-config-generic}"
+
+# Download kernel source
+function kernel_download_source() {
+    local kernel_dir="$1"
+    local version="${2:-$KERNEL_VERSION}"
+    
+    section_header "Downloading Kernel Source"
+    
+    local major_version=$(echo "$version" | cut -d. -f1)
+    local url="${KERNEL_SOURCE_URL}/v${major_version}.x/linux-${version}.tar.xz"
+    local temp_file="/tmp/linux-${version}.tar.xz"
+    local source_dir="${kernel_dir}/linux-${version}"
+    
+    log_info "Kernel version: ${version}"
+    log_info "Download URL: ${url}"
+    log_info "Target directory: ${kernel_dir}"
+    
+    # Clean existing kernel directory
+    if [[ -d "$kernel_dir" ]]; then
+        log_info "Cleaning existing kernel directory"
+        safe_rmdir "$kernel_dir"
+    fi
+    safe_mkdir "$kernel_dir"
+    
+    # Download kernel source
+    if [[ ! -f "$temp_file" ]]; then
+        log_info "Downloading kernel source: ${version}"
+        safe_execute wget --progress=dot:giga -O "$temp_file" "$url"
+    else
+        log_info "Using cached kernel source: ${temp_file}"
+    fi
+    
+    # Verify download
+    local file_size=$(get_file_size "$temp_file")
+    log_info "Kernel source size: ${file_size}"
+    
+    # Extract kernel source
+    log_info "Extracting kernel source"
+    safe_execute tar -xJf "$temp_file" -C "$kernel_dir"
+    
+    # Verify extraction
+    if [[ ! -d "$source_dir" ]]; then
+        log_error "Kernel source extraction failed"
+        return 1
+    fi
+    
+    # Create symlink for easier access
+    safe_execute ln -sf "linux-${version}" "${kernel_dir}/current"
+    
+    # Cleanup download
+    safe_execute rm "$temp_file"
+    
+    log_info "Kernel source download complete: ${source_dir}"
+}
+
+# Apply kernel configuration with embedded initramfs
+function kernel_apply_config() {
+    local kernel_dir="$1"
+    local initramfs_path="$2"
+    local config_source="${3:-$KERNEL_CONFIG_SOURCE}"
+    
+    section_header "Applying Kernel Configuration"
+    
+    local source_dir="${kernel_dir}/current"
+    
+    if [[ ! -d "$source_dir" ]]; then
+        log_error "Kernel source directory not found: ${source_dir}"
+        return 1
+    fi
+    
+    if [[ ! -f "$config_source" ]]; then
+        log_error "Kernel config source not found: ${config_source}"
+        return 1
+    fi
+    
+    if [[ ! -f "$initramfs_path" ]]; then
+        log_error "Initramfs file not found: ${initramfs_path}"
+        return 1
+    fi
+    
+    safe_execute cd "$source_dir"
+    
+    # Copy base configuration
+    log_info "Copying kernel configuration from: ${config_source}"
+    safe_copy "$config_source" ".config"
+    
+    # Update configuration for embedded initramfs
+    log_info "Updating configuration for embedded initramfs"
+    log_info "Initramfs path: ${initramfs_path}"
+    
+    # Resolve absolute path for initramfs
+    local abs_initramfs_path=$(resolve_path "$initramfs_path")
+    
+    # Modify config for embedded initramfs
+    kernel_modify_config_for_initramfs "$abs_initramfs_path"
+    
+    # Run olddefconfig to apply defaults for any new options
+    log_info "Running olddefconfig to finalize configuration"
+    safe_execute make olddefconfig
+    
+    log_info "Kernel configuration applied successfully"
+}
+
+# Modify kernel config for embedded initramfs
+function kernel_modify_config_for_initramfs() {
+    local initramfs_path="$1"
+    
+    log_info "Modifying kernel config for embedded initramfs"
+    
+    # Use sed to update configuration
+    safe_execute sed -i "s|^CONFIG_INITRAMFS_SOURCE=.*|CONFIG_INITRAMFS_SOURCE=\"${initramfs_path}\"|" .config
+    
+    # Ensure XZ compression is enabled for initramfs
+    safe_execute sed -i 's/^# CONFIG_RD_XZ is not set/CONFIG_RD_XZ=y/' .config
+    safe_execute sed -i 's/^CONFIG_INITRAMFS_COMPRESSION_NONE=y/# CONFIG_INITRAMFS_COMPRESSION_NONE is not set/' .config
+    safe_execute sed -i 's/^# CONFIG_INITRAMFS_COMPRESSION_XZ is not set/CONFIG_INITRAMFS_COMPRESSION_XZ=y/' .config
+    
+    # Verify critical settings
+    if ! grep -q "CONFIG_INITRAMFS_SOURCE=\"${initramfs_path}\"" .config; then
+        log_error "Failed to set INITRAMFS_SOURCE in kernel config"
+        return 1
+    fi
+    
+    if ! grep -q "CONFIG_RD_XZ=y" .config; then
+        log_error "Failed to enable XZ decompression in kernel config"
+        return 1
+    fi
+    
+    log_info "Kernel config updated for embedded initramfs"
+}
+
+# Build kernel with embedded initramfs
+function kernel_build_with_initramfs() {
+    local kernel_config="$1"
+    local initramfs_path="$2"
+    local output_file="$3"
+    local kernel_dir="${4:-${PROJECT_ROOT}/kernel}"
+    
+    section_header "Building Kernel with Embedded Initramfs"
+    
+    # Download kernel source if needed
+    if [[ ! -d "${kernel_dir}/current" ]]; then
+        kernel_download_source "$kernel_dir"
+    fi
+    
+    # Apply configuration
+    kernel_apply_config "$kernel_dir" "$initramfs_path" "$kernel_config"
+    
+    local source_dir="${kernel_dir}/current"
+    safe_execute cd "$source_dir"
+    
+    # Clean previous build
+    log_info "Cleaning previous kernel build"
+    safe_execute make clean
+    
+    # Determine number of cores for parallel build
+    local cores=$(nproc)
+    local jobs=$((cores > 1 ? cores - 1 : 1))  # Leave one core free
+    log_info "Building with ${jobs} parallel jobs"
+    
+    # Build kernel
+    log_info "Building kernel (this may take a while)..."
+    safe_execute make -j${jobs} bzImage
+    
+    # Verify kernel was built
+    local kernel_image="arch/x86/boot/bzImage"
+    if [[ ! -f "$kernel_image" ]]; then
+        log_error "Kernel build failed - bzImage not found"
+        return 1
+    fi
+    
+    # Copy to output location
+    local output_dir=$(dirname "$output_file")
+    safe_mkdir "$output_dir"
+    safe_copy "$kernel_image" "$output_file"
+    
+    # Verify final kernel
+    local kernel_size=$(get_file_size "$output_file")
+    log_info "Kernel build complete:"
+    log_info "  Output file: ${output_file}"
+    log_info "  Kernel size: ${kernel_size}"
+    
+    # Verify initramfs is embedded
+    if strings "$output_file" | grep -q "initramfs"; then
+        log_info "✓ Initramfs appears to be embedded in kernel"
+    else
+        log_warn "Initramfs embedding verification inconclusive"
+    fi
+}
+
+# Build modules for initramfs
+function kernel_build_modules() {
+    local kernel_dir="$1"
+    local modules_install_dir="$2"
+    local version="${3:-$KERNEL_VERSION}"
+    
+    section_header "Building Kernel Modules"
+    
+    local source_dir="${kernel_dir}/current"
+    
+    if [[ ! -d "$source_dir" ]]; then
+        log_error "Kernel source directory not found: ${source_dir}"
+        return 1
+    fi
+    
+    safe_execute cd "$source_dir"
+    
+    # Build modules
+    local cores=$(nproc)
+    local jobs=$((cores > 1 ? cores - 1 : 1))
+    
+    log_info "Building kernel modules with ${jobs} parallel jobs"
+    safe_execute make -j${jobs} modules
+    
+    # Install modules to staging area
+    log_info "Installing modules to: ${modules_install_dir}"
+    safe_mkdir "$modules_install_dir"
+    safe_execute make modules_install INSTALL_MOD_PATH="$modules_install_dir"
+    
+    # Run depmod to create module dependencies
+    local modules_dir="${modules_install_dir}/lib/modules/${version}"
+    if [[ -d "$modules_dir" ]]; then
+        log_info "Running depmod for module dependencies"
+        safe_execute depmod -a -b "$modules_install_dir" "$version"
+    fi
+    
+    log_info "Kernel modules build complete"
+}
+
+# Clean kernel build artifacts
+function kernel_cleanup() {
+    local kernel_dir="$1"
+    local keep_source="${2:-false}"
+    
+    section_header "Cleaning Kernel Build Artifacts"
+    
+    if [[ "$keep_source" == "true" ]]; then
+        log_info "Keeping source, cleaning build artifacts only"
+        local source_dir="${kernel_dir}/current"
+        if [[ -d "$source_dir" ]]; then
+            safe_execute cd "$source_dir"
+            safe_execute make clean
+        fi
+    else
+        log_info "Removing entire kernel directory"
+        safe_rmdir "$kernel_dir"
+    fi
+    
+    log_info "Kernel cleanup complete"
+}
+
+# Export functions
+export -f kernel_download_source kernel_apply_config kernel_modify_config_for_initramfs
+export -f kernel_build_with_initramfs kernel_build_modules kernel_cleanup

scripts/lib/testing.sh

@@ -0,0 +1,367 @@
+#!/bin/bash
+# Testing with QEMU and cloud-hypervisor
+
+# Source common functions
+LIB_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${LIB_SCRIPT_DIR}/common.sh"
+
+# Testing configuration
+QEMU_MEMORY="${QEMU_MEMORY:-512M}"
+QEMU_TIMEOUT="${QEMU_TIMEOUT:-60}"
+CLOUD_HYPERVISOR_MEMORY="${CLOUD_HYPERVISOR_MEMORY:-512M}"
+
+# Test kernel boot with QEMU
+function testing_qemu_boot() {
+    local kernel_file="$1"
+    local test_type="${2:-basic}"
+    local timeout="${3:-$QEMU_TIMEOUT}"
+    
+    section_header "Testing with QEMU"
+    
+    if [[ ! -f "$kernel_file" ]]; then
+        log_error "Kernel file not found: ${kernel_file}"
+        return 1
+    fi
+    
+    # Check if QEMU is available
+    if ! command_exists "qemu-system-x86_64"; then
+        log_error "QEMU not found. Install with: apt-get install qemu-system-x86"
+        return 1
+    fi
+    
+    log_info "Kernel file: ${kernel_file}"
+    log_info "Memory: ${QEMU_MEMORY}"
+    log_info "Test type: ${test_type}"
+    log_info "Timeout: ${timeout}s"
+    
+    case "$test_type" in
+        "basic")
+            testing_qemu_basic_boot "$kernel_file" "$timeout"
+            ;;
+        "serial")
+            testing_qemu_serial_boot "$kernel_file" "$timeout"
+            ;;
+        "interactive")
+            testing_qemu_interactive_boot "$kernel_file"
+            ;;
+        *)
+            log_error "Unknown QEMU test type: ${test_type}"
+            return 1
+            ;;
+    esac
+}
+
+# Basic QEMU boot test (automated)
+function testing_qemu_basic_boot() {
+    local kernel_file="$1"
+    local timeout="$2"
+    
+    log_info "Running basic QEMU boot test (${timeout}s timeout)"
+    
+    # QEMU command for automated testing
+    local qemu_cmd="qemu-system-x86_64 \
+        -kernel $kernel_file \
+        -m $QEMU_MEMORY \
+        -nographic \
+        -serial mon:stdio \
+        -append 'console=ttyS0,115200 console=tty1 loglevel=7 panic=10' \
+        -no-reboot"
+    
+    log_info "QEMU command: ${qemu_cmd}"
+    
+    # Run with timeout
+    if timeout "$timeout" $qemu_cmd 2>&1 | tee /tmp/qemu-boot.log; then
+        log_info "QEMU boot test completed"
+    else
+        local exit_code=$?
+        if [[ $exit_code -eq 124 ]]; then
+            log_info "QEMU boot test timed out (${timeout}s) - this may be normal"
+        else
+            log_error "QEMU boot test failed with exit code: ${exit_code}"
+            return 1
+        fi
+    fi
+    
+    # Check boot log for success indicators
+    testing_analyze_boot_log "/tmp/qemu-boot.log"
+}
+
+# QEMU serial console test
+function testing_qemu_serial_boot() {
+    local kernel_file="$1"
+    local timeout="$2"
+    
+    log_info "Running QEMU serial console test"
+    
+    # QEMU command optimized for serial console
+    local qemu_cmd="qemu-system-x86_64 \
+        -kernel $kernel_file \
+        -m $QEMU_MEMORY \
+        -nographic \
+        -serial stdio \
+        -append 'console=ttyS0,115200n8 console=tty1 consoleblank=0 earlyprintk=serial,ttyS0,115200n8 loglevel=7'"
+    
+    log_info "QEMU serial command: ${qemu_cmd}"
+    
+    # Run with timeout and capture output
+    timeout "$timeout" $qemu_cmd 2>&1 | tee /tmp/qemu-serial.log
+    
+    # Analyze serial output
+    testing_analyze_boot_log "/tmp/qemu-serial.log"
+}
+
+# Interactive QEMU boot (no timeout)
+function testing_qemu_interactive_boot() {
+    local kernel_file="$1"
+    
+    log_info "Starting interactive QEMU session"
+    log_info "Use Ctrl+A, X to exit QEMU"
+    
+    # Interactive QEMU command
+    local qemu_cmd="qemu-system-x86_64 \
+        -kernel $kernel_file \
+        -m $QEMU_MEMORY \
+        -nographic \
+        -serial mon:stdio \
+        -append 'console=ttyS0,115200 console=tty1 loglevel=7'"
+    
+    log_info "QEMU command: ${qemu_cmd}"
+    
+    # Run interactively
+    safe_execute $qemu_cmd
+}
+
+# Test kernel boot with cloud-hypervisor
+function testing_cloud_hypervisor_boot() {
+    local kernel_file="$1"
+    local test_type="${2:-basic}"
+    local timeout="${3:-$QEMU_TIMEOUT}"
+    
+    section_header "Testing with cloud-hypervisor"
+    
+    if [[ ! -f "$kernel_file" ]]; then
+        log_error "Kernel file not found: ${kernel_file}"
+        return 1
+    fi
+    
+    # Check if cloud-hypervisor is available
+    if ! command_exists "cloud-hypervisor"; then
+        log_error "cloud-hypervisor not found. Install from: https://github.com/cloud-hypervisor/cloud-hypervisor"
+        return 1
+    fi
+    
+    log_info "Kernel file: ${kernel_file}"
+    log_info "Memory: ${CLOUD_HYPERVISOR_MEMORY}"
+    log_info "Test type: ${test_type}"
+    
+    case "$test_type" in
+        "basic")
+            testing_cloud_hypervisor_basic "$kernel_file" "$timeout"
+            ;;
+        "serial")
+            testing_cloud_hypervisor_serial "$kernel_file" "$timeout"
+            ;;
+        *)
+            log_error "Unknown cloud-hypervisor test type: ${test_type}"
+            return 1
+            ;;
+    esac
+}
+
+# Basic cloud-hypervisor test
+function testing_cloud_hypervisor_basic() {
+    local kernel_file="$1"
+    local timeout="$2"
+    
+    log_info "Running basic cloud-hypervisor test"
+    
+    # cloud-hypervisor command
+    local ch_cmd="cloud-hypervisor \
+        --kernel $kernel_file \
+        --memory size=${CLOUD_HYPERVISOR_MEMORY} \
+        --serial tty \
+        --console off \
+        --cmdline 'console=ttyS0,115200 loglevel=7 panic=10'"
+    
+    log_info "cloud-hypervisor command: ${ch_cmd}"
+    
+    # Run with timeout
+    if timeout "$timeout" $ch_cmd 2>&1 | tee /tmp/cloud-hypervisor-boot.log; then
+        log_info "cloud-hypervisor test completed"
+    else
+        local exit_code=$?
+        if [[ $exit_code -eq 124 ]]; then
+            log_info "cloud-hypervisor test timed out (${timeout}s)"
+        else
+            log_error "cloud-hypervisor test failed with exit code: ${exit_code}"
+            return 1
+        fi
+    fi
+    
+    # Analyze boot log
+    testing_analyze_boot_log "/tmp/cloud-hypervisor-boot.log"
+}
+
+# cloud-hypervisor serial test
+function testing_cloud_hypervisor_serial() {
+    local kernel_file="$1"
+    local timeout="$2"
+    
+    log_info "Running cloud-hypervisor serial test"
+    
+    # cloud-hypervisor command with serial focus
+    local ch_cmd="cloud-hypervisor \
+        --kernel $kernel_file \
+        --memory size=${CLOUD_HYPERVISOR_MEMORY} \
+        --serial tty \
+        --console off \
+        --cmdline 'console=ttyS0,115200n8 earlyprintk=serial loglevel=7'"
+    
+    log_info "cloud-hypervisor serial command: ${ch_cmd}"
+    
+    timeout "$timeout" $ch_cmd 2>&1 | tee /tmp/cloud-hypervisor-serial.log
+    
+    testing_analyze_boot_log "/tmp/cloud-hypervisor-serial.log"
+}
+
+# Analyze boot log for success/failure indicators
+function testing_analyze_boot_log() {
+    local log_file="$1"
+    
+    section_header "Analyzing Boot Log"
+    
+    if [[ ! -f "$log_file" ]]; then
+        log_warn "Boot log file not found: ${log_file}"
+        return 1
+    fi
+    
+    local log_size=$(get_file_size "$log_file")
+    log_info "Boot log size: ${log_size}"
+    
+    # Success indicators
+    local success_patterns=(
+        "zinit.*starting"
+        "zinit.*initialized"
+        "login:"
+        "zero-os.*login:"
+        "Alpine Linux"
+        "Welcome to Alpine"
+    )
+    
+    # Error indicators
+    local error_patterns=(
+        "Kernel panic"
+        "kernel BUG"
+        "Unable to mount root"
+        "VFS: Cannot open root device"
+        "not syncing"
+        "Attempted to kill init"
+    )
+    
+    local success_count=0
+    local error_count=0
+    
+    # Check for success patterns
+    for pattern in "${success_patterns[@]}"; do
+        if grep -i "$pattern" "$log_file" >/dev/null 2>&1; then
+            log_info "✓ Found success indicator: ${pattern}"
+            ((success_count++))
+        fi
+    done
+    
+    # Check for error patterns
+    for pattern in "${error_patterns[@]}"; do
+        if grep -i "$pattern" "$log_file" >/dev/null 2>&1; then
+            log_error "✗ Found error indicator: ${pattern}"
+            ((error_count++))
+        fi
+    done
+    
+    # Summary
+    log_info "Boot log analysis:"
+    log_info "  Success indicators: ${success_count}"
+    log_info "  Error indicators: ${error_count}"
+    
+    if [[ $error_count -gt 0 ]]; then
+        log_error "Boot test failed - errors detected in log"
+        log_info "Check full log at: ${log_file}"
+        return 1
+    elif [[ $success_count -gt 0 ]]; then
+        log_info "Boot test successful - system appears to be working"
+        return 0
+    else
+        log_warn "Boot test inconclusive - no clear success/error indicators"
+        return 2
+    fi
+}
+
+# Run comprehensive test suite
+function testing_run_all() {
+    local kernel_file="$1"
+    local test_timeout="${2:-60}"
+    
+    section_header "Running Comprehensive Test Suite"
+    
+    local test_results=()
+    
+    # Test with QEMU
+    log_info "Running QEMU tests..."
+    if testing_qemu_boot "$kernel_file" "basic" "$test_timeout"; then
+        test_results+=("QEMU-basic: PASS")
+    else
+        test_results+=("QEMU-basic: FAIL")
+    fi
+    
+    if testing_qemu_boot "$kernel_file" "serial" "$test_timeout"; then
+        test_results+=("QEMU-serial: PASS")
+    else
+        test_results+=("QEMU-serial: FAIL")
+    fi
+    
+    # Test with cloud-hypervisor (if available)
+    if command_exists "cloud-hypervisor"; then
+        log_info "Running cloud-hypervisor tests..."
+        if testing_cloud_hypervisor_boot "$kernel_file" "basic" "$test_timeout"; then
+            test_results+=("cloud-hypervisor-basic: PASS")
+        else
+            test_results+=("cloud-hypervisor-basic: FAIL")
+        fi
+    else
+        log_warn "cloud-hypervisor not available, skipping tests"
+        test_results+=("cloud-hypervisor: SKIPPED")
+    fi
+    
+    # Report results
+    section_header "Test Results Summary"
+    local passed=0
+    local failed=0
+    local skipped=0
+    
+    for result in "${test_results[@]}"; do
+        if [[ "$result" =~ PASS ]]; then
+            log_info "✓ $result"
+            ((passed++))
+        elif [[ "$result" =~ FAIL ]]; then
+            log_error "✗ $result"
+            ((failed++))
+        else
+            log_warn "⚠ $result"
+            ((skipped++))
+        fi
+    done
+    
+    log_info "Test summary: ${passed} passed, ${failed} failed, ${skipped} skipped"
+    
+    if [[ $failed -eq 0 ]]; then
+        log_info "All tests passed successfully"
+        return 0
+    else
+        log_error "Some tests failed"
+        return 1
+    fi
+}
+
+# Export functions
+export -f testing_qemu_boot testing_qemu_basic_boot testing_qemu_serial_boot testing_qemu_interactive_boot
+export -f testing_cloud_hypervisor_boot testing_cloud_hypervisor_basic testing_cloud_hypervisor_serial
+export -f testing_analyze_boot_log testing_run_all

scripts/test.sh

@@ -0,0 +1,199 @@
+#!/bin/bash
+# Test script for Zero OS Alpine Initramfs
+
+set -euo pipefail
+
+# Script directory and project root detection
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+# Source common functions and testing library
+source "${SCRIPT_DIR}/lib/common.sh"
+source "${SCRIPT_DIR}/lib/testing.sh"
+
+# Test configuration
+DEFAULT_KERNEL="${PROJECT_ROOT}/dist/vmlinuz.efi"
+TEST_TIMEOUT="${TEST_TIMEOUT:-60}"
+TEST_RUNNER="${TEST_RUNNER:-qemu}"
+
+# Display usage information
+function show_usage() {
+    cat << EOF
+Zero OS Test Script
+
+Usage: $0 [OPTIONS]
+
+Options:
+  --qemu               Test with QEMU (default)
+  --cloud-hypervisor   Test with cloud-hypervisor
+  --all                Test with all available runners
+  --serial             Use serial console test
+  --interactive        Interactive test session
+  --timeout SECONDS    Test timeout in seconds (default: 60)
+  --kernel FILE        Kernel file to test (default: dist/vmlinuz.efi)
+  --help               Show this help message
+
+Examples:
+  $0                   # Basic QEMU test
+  $0 --qemu --serial   # QEMU with serial console
+  $0 --cloud-hypervisor # Test with cloud-hypervisor
+  $0 --all             # Test with all available runners
+  $0 --interactive     # Interactive QEMU session
+EOF
+}
+
+# Parse command line arguments
+function parse_arguments() {
+    local kernel_file="$DEFAULT_KERNEL"
+    local test_type="basic"
+    local runners=()
+    
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            --qemu)
+                runners+=("qemu")
+                shift
+                ;;
+            --cloud-hypervisor)
+                runners+=("cloud-hypervisor")
+                shift
+                ;;
+            --all)
+                runners=("qemu" "cloud-hypervisor")
+                shift
+                ;;
+            --serial)
+                test_type="serial"
+                shift
+                ;;
+            --interactive)
+                test_type="interactive"
+                shift
+                ;;
+            --timeout)
+                TEST_TIMEOUT="$2"
+                shift 2
+                ;;
+            --kernel)
+                kernel_file="$2"
+                shift 2
+                ;;
+            --help|-h)
+                show_usage
+                exit 0
+                ;;
+            *)
+                log_error "Unknown option: $1"
+                show_usage
+                exit 1
+                ;;
+        esac
+    done
+    
+    # Default to QEMU if no runner specified
+    if [[ ${#runners[@]} -eq 0 ]]; then
+        runners=("qemu")
+    fi
+    
+    # Export parsed values
+    export KERNEL_FILE="$kernel_file"
+    export TEST_TYPE="$test_type"
+    export TEST_RUNNERS=("${runners[@]}")
+}
+
+# Run tests with specified runners
+function run_tests() {
+    section_header "Running Zero OS Boot Tests"
+    
+    # Verify kernel file exists
+    if [[ ! -f "$KERNEL_FILE" ]]; then
+        log_error "Kernel file not found: ${KERNEL_FILE}"
+        log_info "Run './scripts/build.sh' first to build the kernel"
+        return 1
+    fi
+    
+    local kernel_size=$(get_file_size "$KERNEL_FILE")
+    log_info "Testing kernel: ${KERNEL_FILE} (${kernel_size})"
+    log_info "Test type: ${TEST_TYPE}"
+    log_info "Test timeout: ${TEST_TIMEOUT}s"
+    
+    local test_results=()
+    local overall_success=true
+    
+    # Run tests with each specified runner
+    for runner in "${TEST_RUNNERS[@]}"; do
+        log_info "Testing with runner: ${runner}"
+        
+        case "$runner" in
+            "qemu")
+                if testing_qemu_boot "$KERNEL_FILE" "$TEST_TYPE" "$TEST_TIMEOUT"; then
+                    test_results+=("QEMU-${TEST_TYPE}: PASS")
+                else
+                    test_results+=("QEMU-${TEST_TYPE}: FAIL")
+                    overall_success=false
+                fi
+                ;;
+            "cloud-hypervisor")
+                if command_exists "cloud-hypervisor"; then
+                    if testing_cloud_hypervisor_boot "$KERNEL_FILE" "$TEST_TYPE" "$TEST_TIMEOUT"; then
+                        test_results+=("cloud-hypervisor-${TEST_TYPE}: PASS")
+                    else
+                        test_results+=("cloud-hypervisor-${TEST_TYPE}: FAIL")
+                        overall_success=false
+                    fi
+                else
+                    log_warn "cloud-hypervisor not available, skipping"
+                    test_results+=("cloud-hypervisor: SKIPPED")
+                fi
+                ;;
+            *)
+                log_error "Unknown test runner: ${runner}"
+                test_results+=("${runner}: ERROR")
+                overall_success=false
+                ;;
+        esac
+    done
+    
+    # Report final results
+    section_header "Test Results Summary"
+    
+    for result in "${test_results[@]}"; do
+        if [[ "$result" =~ PASS ]]; then
+            log_info "✓ $result"
+        elif [[ "$result" =~ FAIL ]]; then
+            log_error "✗ $result"
+        elif [[ "$result" =~ SKIPPED ]]; then
+            log_warn "⚠ $result"
+        else
+            log_error "✗ $result"
+        fi
+    done
+    
+    if [[ "$overall_success" == "true" ]]; then
+        log_info "All tests completed successfully"
+        return 0
+    else
+        log_error "Some tests failed"
+        return 1
+    fi
+}
+
+# Main function
+function main() {
+    # Parse command line arguments
+    parse_arguments "$@"
+    
+    echo ""
+    echo "=================================================="
+    echo "==         ZERO-OS BOOT TESTING               =="
+    echo "=================================================="
+    echo ""
+    
+    # Run tests
+    run_tests
+    
+    section_header "Testing Complete"
+}
+
+# Run main function with all arguments
+main "$@"