test(node): node.toml fixtures use POSIX paths, and a Windows-impossible folder is skipped

The root fixtures wrote `path = C:\Users\...`, which is not valid TOML:
node_toml now reads values with tomllib, so the four tests failed on Windows.
The node and the app always write paths with `/`, as the other fixtures do.
A folder named with a quote and a newline cannot exist on Windows.

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

2 files changed, 13 insertions, 8 deletions

diff --git a/packages/meshbay-node/tests/test_attach_from_the_hub.py b/packages/meshbay-node/tests/test_attach_from_the_hub.py
index f4aaa25..acc9d18 100644
--- a/packages/meshbay-node/tests/test_attach_from_the_hub.py
+++ b/packages/meshbay-node/tests/test_attach_from_the_hub.py
@@ -10,6 +10,7 @@ group name chosen on the hub, a folder name — so none of it may end a TOML
 string and write lines of its own.
 """
 
+import sys
 import tomllib
 from pathlib import Path
 
@@ -79,6 +80,9 @@ async def test_a_group_name_cannot_write_lines_into_node_toml(tmp_path):
     assert hosted["node"]["ui_port"] == 18000
 
 
+@pytest.mark.skipif(sys.platform == "win32",
+                    reason="Windows refuses a quote or a newline in a folder name, and a "
+                           "path is written with `/`: there is no such folder to write")
 async def test_a_folder_name_cannot_either(tmp_path):
     state = _state(tmp_path, {"id": GID, "name": "Films"})
     await ops.attach_group(state, "Films", str(tmp_path / "share"))
diff --git a/packages/meshbay-node/tests/test_node_status.py b/packages/meshbay-node/tests/test_node_status.py
index bd63f8e..91c07b6 100644
--- a/packages/meshbay-node/tests/test_node_status.py
+++ b/packages/meshbay-node/tests/test_node_status.py
@@ -266,7 +266,7 @@ async def test_add_root_creates_directory_and_returns_info(tmp_path):
 
     conf = tmp_path / "node.toml"
     conf.write_text(f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
-                    f'  [[groups.roots]]\n  path = "{shared}"\n', encoding="utf-8")
+                    f'  [[groups.roots]]\n  path = "{shared.as_posix()}"\n', encoding="utf-8")
     node_cfg = NodeConfig.__new__(NodeConfig)
     node_cfg.groups = [cfg]
 
@@ -308,7 +308,7 @@ async def test_remove_root_requires_at_least_one_remaining(tmp_path):
 
     conf = tmp_path / "node.toml"
     conf.write_text(f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
-                    f'  [[groups.roots]]\n  path = "{shared}"\n', encoding="utf-8")
+                    f'  [[groups.roots]]\n  path = "{shared.as_posix()}"\n', encoding="utf-8")
     index = GroupIndex(group_id=GROUP, sk_node=Ed25519PrivateKey.generate())
     roots = one_root(shared)
     state = {
@@ -343,8 +343,9 @@ async def test_removing_a_writable_root_is_allowed(tmp_path):
     conf = tmp_path / "node.toml"
     conf.write_text(
         f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
-        f'  [[groups.roots]]\n  path = "{d1}"\n  name = "incoming"\n  writable = true\n\n'
-        f'  [[groups.roots]]\n  path = "{d2}"\n  name = "shared"\n', encoding="utf-8")
+        f'  [[groups.roots]]\n  path = "{d1.as_posix()}"\n  name = "incoming"\n'
+        '  writable = true\n\n'
+        f'  [[groups.roots]]\n  path = "{d2.as_posix()}"\n  name = "shared"\n', encoding="utf-8")
     roots = RootSet.build([asdict(r) for r in cfg.roots])
     index = GroupIndex(group_id=GROUP, sk_node=Ed25519PrivateKey.generate())
     state = {
@@ -380,7 +381,7 @@ async def test_update_root_rewrites_the_flags_in_node_toml(tmp_path):
         f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
         f'  [[groups.roots]]\n'
         f'  # the operator explained this one to themselves\n'
-        f'  path = "{d1}"\n  name = "media"\n', encoding="utf-8")
+        f'  path = "{d1.as_posix()}"\n  name = "media"\n', encoding="utf-8")
     roots = RootSet.build([asdict(r) for r in cfg.roots])
     index = GroupIndex(group_id=GROUP, sk_node=Ed25519PrivateKey.generate())
     state = {
@@ -429,7 +430,7 @@ async def test_update_root_replaces_a_legacy_upload_line(tmp_path):
     conf = tmp_path / "node.toml"
     conf.write_text(
         f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
-        f'  [[groups.roots]]\n  path = "{d1}"\n  name = "media"\n'
+        f'  [[groups.roots]]\n  path = "{d1.as_posix()}"\n  name = "media"\n'
         f'  upload = true\n', encoding="utf-8")
     roots = RootSet.build([asdict(r) for r in cfg.roots])
     index = GroupIndex(group_id=GROUP, sk_node=Ed25519PrivateKey.generate())
@@ -462,8 +463,8 @@ async def test_remove_root_succeeds_with_two_roots(tmp_path):
     conf = tmp_path / "node.toml"
     conf.write_text(
         f'[[groups]]\nid = "{GROUP}"\nname = "test"\n\n'
-        f'  [[groups.roots]]\n  path = "{d1}"\n  name = "dir1"\n\n'
-        f'  [[groups.roots]]\n  path = "{d2}"\n  name = "dir2"\n', encoding="utf-8")
+        f'  [[groups.roots]]\n  path = "{d1.as_posix()}"\n  name = "dir1"\n\n'
+        f'  [[groups.roots]]\n  path = "{d2.as_posix()}"\n  name = "dir2"\n', encoding="utf-8")
     roots = RootSet.build([asdict(r) for r in cfg.roots])
     index = GroupIndex(group_id=GROUP, sk_node=Ed25519PrivateKey.generate())
     state = {