conductor(deob_c11_ref): Initialize C11 reference track scaffold
Pass 3 sub-track scaffolding:
- spec.md: 14 sections, 4 cluster sub-reports + 1 main c11_convention.md + 1 tracks.md update
- plan.md: 6 atomic tasks, per-file commits with git notes
- metadata.json: scope, verification criteria, source files audited (17 primary + 5 fallback), risk register, user-directives-logged
- state.toml: 3 phases, 7 tasks
- README.md: track index + cross-references
The 4 cluster sub-reports + main c11_convention.md + tracks.md update follow in separate atomic commits.
ed
cb00cba0c2