Merge branch 'refactor/groups-phase1'

Groups refactor, phases 1-3.

The root model replaces the old `upload` flag and group-wide `member_upload`
with per-root `writable`/`removable`/`ejected`, carried by a `RootSet` that
both front doors — the loopback API and signed MNP — reach through the same
`ops` functions. MNP goes to 1.1, additively: the roots table now rides on
`index_delta`, so a root added, removed, ejected or plugged reaches every
connected client instead of only whoever reloaded.

The group UI becomes a plugin architecture: an application is a registry
entry in `apps.js` plus its own files, with directories stored generically
by `ops.set_app_directories` under whatever the app is called. A reference
application, hidden behind `?dev=1`, is what makes that claim testable —
adding it is what found the two places still naming apps by hand.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011pvMdvLBG92jyhvD5pD6us

1 files changed, 11 insertions, 3 deletions

diff --git a/packages/meshbay-hub/tests/test_transfers.py b/packages/meshbay-hub/tests/test_transfers.py
index 86d58cd..3316615 100644
--- a/packages/meshbay-hub/tests/test_transfers.py
+++ b/packages/meshbay-hub/tests/test_transfers.py
@@ -208,9 +208,17 @@ def test_the_colour_is_defined_for_that_mark():
 # ── The file list ───────────────────────────────────────────────────────────
 
 def test_a_folder_name_carries_no_trailing_slash():
-    """The folder icon in the cell beside it already says what it is."""
+    """
+    The folder icon in the cell beside it already says what it is.
+
+    Anchored on `key=${full}`, which is the row that renders a directory. The
+    first `dir-row` in the file is the ".." row added later, whose only cell is
+    an ellipsis — slicing from there found no `${d}` and failed on a name it
+    had never looked at.
+    """
     source = STATIC.joinpath("files-app.js").read_text(encoding="utf-8")
-    row = source[source.index('class="file-row dir-row"'):]
-    row = row[:row.index("</tr>")]
+    start = source.rindex("<tr", 0, source.index("key=${full}"))
+    row = source[start:source.index("</tr>", start)]
+    assert "dir-row" in row, "the anchor no longer lands on the directory row"
     assert "${d}/" not in row, "the folder name is rendered with a trailing slash"
     assert "${d}" in row