Add Fedora lorax build experiment

[xdotli]

Summary

• Successfully builds a 1.1GB bootable Fedora 41 installation ISO using lorax
• Includes Docker-based build environment with architecture auto-detection (ARM64/x86_64)
• Full documentation following CONTRIBUTING.md template

Experiment Structure

linux/build-lorax/
├── README.md           # Overview, quick start, key learnings
├── EXPERIMENT.yaml     # Machine-readable metadata
├── artifacts/
│   ├── Dockerfile      # Fedora 41 with lorax and deps
│   └── build.sh        # Architecture-aware build script
└── trajectories/
    └── SUMMARY.md      # Detailed agent trajectory

Key Metrics

Metric	Value
Agent	Claude Sonnet 4.5
Duration	~0.5 hours
Outcome	SUCCESS
ISO Size	1.1GB
Packages	874
Build Time	~7 minutes

Key Learnings

1. Lorax is Fedora's production tool for creating Anaconda boot ISOs
2. Requires output directory to NOT exist before execution
3. Architecture auto-detection critical for cross-platform builds
4. Privileged Docker container required for filesystem operations

Test plan

• EXPERIMENT.yaml validates
• Artifacts are organized
• Trajectory is complete
• Build tested and produces bootable ISO