feat: let the operator pause and resume a root's indexing (MNP 6.2)

A whole-root walk now checks its root before every file: removed or
ejected, it stops instead of reading the drive to the end; paused, it
finishes from the hash cache alone. A paused root is not watched, not
swept by reconcile and survives a restart (roster), its indexed files
stay served. Resume runs the reconcile sweep over the root, so entries
and their enrichment are kept.

Signed root_pause / root_resume over MNP, loopback routes, CLI
`root pause|resume`, a pause button on the indexing dock and
pause/resume in the roots table of Group settings.

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

1 files changed, 10 insertions, 0 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/ui/app.py b/packages/meshbay-node/src/meshbay_node/ui/app.py
index 03db8b6..9933750 100644
--- a/packages/meshbay-node/src/meshbay_node/ui/app.py
+++ b/packages/meshbay-node/src/meshbay_node/ui/app.py
@@ -449,6 +449,16 @@ def create_ui_app(state: dict) -> FastAPI:
         """Bring an ejected folder back."""
         return await _op(lambda: ops.plug_root(state, group_id, root_name))
 
+    @app.put("/api/groups/{group_id}/roots/{root_name}/pause")
+    async def pause_root(group_id: str, root_name: str):
+        """Stop indexing a folder. What is already indexed stays listed."""
+        return await _op(lambda: ops.pause_root(state, group_id, root_name))
+
+    @app.put("/api/groups/{group_id}/roots/{root_name}/resume")
+    async def resume_root(group_id: str, root_name: str):
+        """Index a paused folder again, from where it stopped."""
+        return await _op(lambda: ops.resume_root(state, group_id, root_name))
+
     @app.delete("/api/groups/{group_id}/roots/{root_name}")
     async def remove_root(group_id: str, root_name: str):
         """Remove a folder from a group. At least one must remain."""