fix(node): name a root after its drive when its basename is taken

Two drives with a folder of the same name made the second add fail,
and no screen could supply another name. add_root now names it
"Name (H)" or "Name (parent)"; a name the operator typed is still
refused on a clash.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/packages/meshbay-node/tests/test_roots.py b/packages/meshbay-node/tests/test_roots.py
index 9a403ff..0fe9f03 100644
--- a/packages/meshbay-node/tests/test_roots.py
+++ b/packages/meshbay-node/tests/test_roots.py
@@ -8,13 +8,17 @@ copy breaks the other".
 """
 
 
+from pathlib import PurePosixPath, PureWindowsPath
+
 import pytest
+from meshbay_common.paths import fold
 from meshbay_common.protocol import IndexEntry
 from meshbay_node.roots import (
     SAFE_UPLOAD_NAME,
     RootError,
     RootSet,
     _free_name,
+    distinct_name,
     entry_abs_path,
     safe_subdir,
 )
@@ -51,6 +55,18 @@ def test_two_roots_cannot_share_a_name(tmp_path):
                        _spec(tmp_path / "b" / "Films")])
 
 
+def test_a_distinct_name_says_where_the_folder_is():
+    taken = {fold("Archives")}
+    assert distinct_name(PureWindowsPath(r"H:\Archives"), taken) == "Archives (H)"
+    assert distinct_name(PurePosixPath("/mnt/b/Films"), {fold("Films")}) == "Films (b)"
+    assert distinct_name(PurePosixPath("/mnt/b/Films"), set()) == "Films"
+
+
+def test_a_distinct_name_counts_when_where_is_taken_too():
+    taken = {fold("Films"), fold("Films (b)")}
+    assert distinct_name(PurePosixPath("/mnt/b/Films"), taken) == "Films (2)"
+
+
 def test_names_clash_without_regard_to_case(tmp_path):
     """
     `Films` and `films` are one directory on NTFS and exFAT, which is where most