- Add JIT Self-Host Quickstart section for Phase 15
- Include important flags reference (plugins, parsers, debugging)
- Add Codex async workflow documentation for parallel tasks
- Update test execution with Phase 15 smoke tests
- Improve build time notes (JIT vs LLVM)
- Align with current Phase 15 progress and tooling
🎉 Bootstrap (c0→c1→c1') test confirmed working\!
Co-Authored-By: Claude <noreply@anthropic.com>
