Function resolveProjectPath

src/bin/codegraph.ts:200–225

* Resolve project path from argument or current directory * Walks up parent directories to find nearest initialized CodeGraph project * (must have .codegraph/codegraph.db, not just .codegraph/lessons.db)

(pathArg?: string)

 * (must have .codegraph/codegraph.db, not just .codegraph/lessons.db)
 */
function resolveProjectPath(pathArg?: string): string {
  const absolutePath = path.resolve(pathArg || process.cwd());

  // If exact path is initialized (has codegraph.db), use it
  if (isInitialized(absolutePath)) {
    return absolutePath;
  }

  // Walk up to find nearest parent with CodeGraph initialized
  // Note: findNearestCodeGraphRoot finds any .codegraph folder, but we need one with codegraph.db
  let current = absolutePath;
  const root = path.parse(current).root;

  while (current !== root) {
    const parent = path.dirname(current);
    if (parent === current) break;
    current = parent;

    if (isInitialized(current)) {
      return current;
    }
  }

  // Not found - return original path (will fail later with helpful error)
  return absolutePath;
}

/**
 * Format a number with commas