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, 7 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/daemon.py b/packages/meshbay-node/src/meshbay_node/daemon.py
index 4d89f97..022553e 100644
--- a/packages/meshbay-node/src/meshbay_node/daemon.py
+++ b/packages/meshbay-node/src/meshbay_node/daemon.py
@@ -1286,7 +1286,8 @@ class NodeDaemon(EnrichmentMixin):
 
     async def _build_roots(self, group_cfg) -> RootSet:
         """
-        Build a group's RootSet from node.toml, with the ejected state restored.
+        Build a group's RootSet from node.toml, with the ejected and paused
+        state restored.
 
         node.toml carries configuration (`writable`, `removable`); the roster
         carries the runtime answer to "is this drive ejected right now". They
@@ -1298,12 +1299,14 @@ class NodeDaemon(EnrichmentMixin):
         if self._roster:
             ejected = await self._roster.ejected_roots(group_cfg.id)
             auto = await self._roster.auto_ejected_roots(group_cfg.id)
-            if ejected:
-                for spec in specs:
-                    name = spec.get("name") or Path(spec.get("path", "")).name
-                    if fold(name) in ejected:
-                        spec["ejected"] = True
-                        spec["ejected_auto"] = fold(name) in auto
+            paused = await self._roster.paused_roots(group_cfg.id)
+            for spec in specs:
+                name = spec.get("name") or Path(spec.get("path", "")).name
+                if fold(name) in ejected:
+                    spec["ejected"] = True
+                    spec["ejected_auto"] = fold(name) in auto
+                if fold(name) in paused:
+                    spec["paused"] = True
         return RootSet.build(specs)
 
     # Every application that keeps directories. This is the one list, and it