feat(mnp): sharing a folder is decided on the node's machine only (MNP 6.0)

root_add, root_update and group_attach leave MNP: adding a directory and
switching writable/removable go through the loopback API (native dialog in
the desktop app) or the CLI. The operator's Settings tab still lists the
roots from any browser, read-only. The desktop app refuses to sign those
ops; a loopback flag change now reaches open pages (publish_roots).

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

1 files changed, 15 insertions, 0 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/indexer/indexer.py b/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
index 4b619d7..f0505f7 100644
--- a/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
+++ b/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
@@ -719,6 +719,21 @@ class DirectoryIndexer:
             # The table now; the files when the scan ends.
             await self.on_change(self)
 
+    async def publish_roots(self) -> None:
+        """
+        Tell every connected peer the table, after a root's flags were edited
+        in place (`ops.update_root`).
+
+        A reload compares the edited set with itself and finds nothing to do,
+        so without this a directory made writable from the operator's own
+        machine stayed read-only on every open page until something else
+        happened to push the index.
+        """
+        self._index.roots = self.roots.describe()
+        self._index.version = int(time.time())
+        if self.on_change:
+            await self.on_change(self)
+
     def _holds(self, root: Root) -> bool:
         return any(r.folded == root.folded and r.path == root.path for r in self.roots)