Function resolveStopBoundary

src/utils/markdownConfigLoader.ts:235–264

* Compute the stop boundary for getProjectDirsUpToHome's upward walk. * * Normally the walk stops at the nearest `.git` above `cwd`. But if the Bash * tool has cd'd into a nested git repo inside the session's project (submodule, * vendored dep with its own `.git`), that nested root isn't the rig

(cwd: string)

 * copy only when the worktree lacks one.
 */
function resolveStopBoundary(cwd: string): string | null {
  const cwdGitRoot = findGitRoot(cwd)
  const sessionGitRoot = findGitRoot(getProjectRoot())
  if (!cwdGitRoot || !sessionGitRoot) {
    return cwdGitRoot
  }
  // findCanonicalGitRoot resolves worktree `.git` files to the main repo.
  // Submodules (no commondir) and standalone clones fall through unchanged.
  const cwdCanonical = findCanonicalGitRoot(cwd)
  if (
    cwdCanonical &&
    normalizePathForComparison(cwdCanonical) ===
      normalizePathForComparison(sessionGitRoot)
  ) {
    // Same canonical repo (main, or a worktree of main). Stop at nearest .git.
    return cwdGitRoot
  }
  // Different canonical repo. Is it nested *inside* the session's project?
  const nCwdGitRoot = normalizePathForComparison(cwdGitRoot)
  const nSessionRoot = normalizePathForComparison(sessionGitRoot)
  if (
    nCwdGitRoot !== nSessionRoot &&
    nCwdGitRoot.startsWith(nSessionRoot + sep)
  ) {
    // Nested repo inside the project — skip past it, stop at the project's root.
    return sessionGitRoot
  }
  // Sibling repo or elsewhere. Stop at nearest .git (old behavior).
  return cwdGitRoot
}

/**
 * Traverses from the current directory up to the git root (or home directory if not in a git repo),