Function collectIncludedFilesForRoot

src/extraction/index.ts:500–505

* The included source files (`codegraph.json` `include`) for a scan root, or an * empty set when nothing is force-included. Centralizes loading the matcher, * roots, exclude, and overrides so both enumeration paths (git and filesystem * walk) add the same files.

(rootDir: string)

 * walk) add the same files.
 */
function collectIncludedFilesForRoot(rootDir: string): Set<string> {
  const include = loadIncludeMatcher(rootDir);
  if (!include) return new Set();
  const roots = includeStaticRoots(loadIncludePatterns(rootDir));
  return collectIncludedFiles(rootDir, include, loadExcludeMatcher(rootDir), roots, loadExtensionOverrides(rootDir));
}

/**
 * `git ls-files --directory` collapses a wholly-untracked/ignored directory into