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, 27 insertions, 2 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/cli/groups.py b/packages/meshbay-node/src/meshbay_node/cli/groups.py
index fca4800..b402930 100644
--- a/packages/meshbay-node/src/meshbay_node/cli/groups.py
+++ b/packages/meshbay-node/src/meshbay_node/cli/groups.py
@@ -33,6 +33,8 @@ def group(args) -> None:
                     flags.append("removable")
                 if r.get("ejected"):
                     flags.append("ejected")
+                if r.get("paused"):
+                    flags.append("paused")
                 flag_str = f" ({', '.join(flags)})" if flags else ""
                 live = "" if r.get("available", True) else "  [UNAVAILABLE]"
                 print(f"      root {r['name']}{flag_str}{live}")
@@ -128,6 +130,8 @@ def root(args) -> None:
                 flags.append("removable")
             if r.get("ejected"):
                 flags.append("EJECTED")
+            if r.get("paused"):
+                flags.append("PAUSED")
             avail = "available" if r.get("available", True) else "UNAVAILABLE"
             flags.append(avail)
             print(f"  {r['name']:<20} {', '.join(flags)}")
@@ -215,8 +219,29 @@ def root(args) -> None:
         print(f"plugged root {name} — files are visible again")
         return
 
-    print("usage: meshbay-node root list|add|remove|set|eject|plug [name] "
-          "[--group NAME]")
+    if sub == "pause":
+        name = args.target
+        if not name:
+            print("usage: meshbay-node root pause <name> [--group NAME]")
+            sys.exit(1)
+        _daemon_api(cfg, f"/api/groups/{group_id}/roots/{name}/pause",
+                    method="PUT")
+        print(f"paused root {name} — indexed files stay listed, nothing new "
+              f"is indexed until resumed")
+        return
+
+    if sub == "resume":
+        name = args.target
+        if not name:
+            print("usage: meshbay-node root resume <name> [--group NAME]")
+            sys.exit(1)
+        _daemon_api(cfg, f"/api/groups/{group_id}/roots/{name}/resume",
+                    method="PUT")
+        print(f"resumed root {name} — indexing continues in the background")
+        return
+
+    print("usage: meshbay-node root list|add|remove|set|eject|plug|pause|resume "
+          "[name] [--group NAME]")
     sys.exit(1)