fix(archsetup): remount /.snapshots after snapper config

Archangel creates @snapshots subvolume and adds it to fstab.
Archsetup unmounts it for snapper create-config, but never
remounted it, causing snap-pac errors during package installs.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/archsetup b/archsetup
index a2aaa2d..09ca9f2 100755
--- a/archsetup
+++ b/archsetup
@@ -1289,6 +1289,12 @@ EOF
             display "task" "snapper root config already exists"
         fi
 
+        # Ensure /.snapshots is mounted (archangel may have created @snapshots in fstab)
+        if ! mountpoint -q /.snapshots 2>/dev/null; then
+            mkdir -p /.snapshots
+            mount /.snapshots >> "$logfile" 2>&1 || true
+        fi
+
         action="configuring snapper retention policy" && display "task" "$action"
         # Conservative retention - local snapshots for quick rollback
         snapper -c root set-config "TIMELINE_CREATE=yes" >> "$logfile" 2>&1