fn legacy_project_root_candidate(
db: &Path,
_admission: Option<&ProjectStateGuard>,
) -> Result<Option<PathBuf>, CliError>Expand description
Resolve a predecessor root only as a read-only discovery candidate.
Legacy metadata is a display-only recovery hint. The database-owned candidate reader rejects projections without native authority before this function constructs a path or probes any candidate configuration location.