Add two CLI entry points for the unified dependency resolver:
- `cm_cli uv-compile`: standalone batch resolution of all installed
node pack dependencies via uv pip compile
- `cm_cli install --uv-compile`: skip per-node pip, batch-resolve all
deps after install completes (mutually exclusive with --no-deps)
Both use a shared `_run_unified_resolve()` helper that passes real
cm_global values (pip_blacklist, pip_overrides, pip_downgrade_blacklist)
and guarantees PIPFixer.fix_broken() runs via try/finally.
Update DESIGN, PRD, and TEST docs for consistency.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>