v0.4.0

Fixed

• Multi-architecture Docker builds (amd64 + arm64 for Apple Silicon)
• Go download now detects architecture instead of hardcoding amd64
• wl up error handling shows helpful messages for network failures
• wl ps shows current project even when both containers stopped
• Homebrew install: fixed "bind source path does not exist" error
• Post-create/post-start scripts now use absolute paths in image

Changed

• Use pre-built GHCR image instead of building from Dockerfile
• Added CI workflow for Docker build testing
• Baked zsh and gh (GitHub CLI) into image - no runtime feature installs
• Removed devcontainer features to eliminate network-dependent rebuilds
• Startup message now says "Starting work-lab container..."
• Docker image versioned independently from CLI (rebuilds only when Dockerfile changes)
• Removed redundant project count from wl ps output