1 files changed, 19 insertions, 6 deletions
diff --git a/packages/meshbay-hub/tests/test_app_settings_plugin.py b/packages/meshbay-hub/tests/test_app_settings_plugin.py
index af86f12..940d975 100644
--- a/packages/meshbay-hub/tests/test_app_settings_plugin.py
+++ b/packages/meshbay-hub/tests/test_app_settings_plugin.py
@@ -256,15 +256,28 @@ def test_each_app_takes_a_list_of_directories(app, prop):
 
 def test_the_lists_are_read_under_one_name_each():
     """
-    One name per app on the ack — `<app>_directories`, always a list. A second
-    name for the same answer means a page that reads whichever it thinks of
-    first, and a node that fills only the other one empties a working tab.
+    One name per app on the ack — `<app>_directories`, always a list — and the
+    shell names none of them.
+
+    It read three by hand until 2026-09-10, and `helloworld` was not among them:
+    the app that exists to prove a new one needs no special-casing had its
+    directories dropped on arrival, which made the plugin claim false exactly
+    where it is demonstrated. An app the node knows about must be one this page
+    already handles, and the only way to guarantee that is to read the ack's own
+    keys instead of a list kept here.
+
+    A second *name* for the same answer would be the older fault: a page reading
+    whichever it thinks of first, and a node filling only the other one emptying
+    a working tab.
     """
     page = GROUP_PAGE.read_text(encoding="utf-8")
-    block = page[page.index("setAppDirectories({"):]
+    block = page[page.index("setAppDirectories("):]
     block = block[:block.index("setChatDirectory")]
-    assert "ack.video_directories" in block and "ack.music_directories" in block
-    assert "ack.photo_directories" in block
+    assert "endsWith('_directories')" in block, (
+        "the shell must derive the map from the ack's keys, not name apps")
+    for named in ("ack.video_directories", "ack.music_directories",
+                  "ack.photo_directories"):
+        assert named not in block, f"{named} is an application named by the shell"
     for gone in ("ack.video_root", "ack.audio_root", "ack.photo_roots"):
         assert gone not in block, f"{gone} is a second name for the same answer"