pub fn document_source_dirs(source_map: &SourceMap) -> Vec<PathBuf>Expand description
Shared option→validation mapping and document-dir resolution — single source
of truth so the LSP/MCP diagnostics cannot drift from check (issue #1648).
Per-file_id source-file directories, parallel to source_map.files().
Lets the validator resolve a relative document path against its own
directive’s file (matching Beancount and include) instead of the CWD.