diff --git a/remount-fuse.sh b/remount-fuse.sh
index 74c764b..a929ac0 100644
--- a/remount-fuse.sh
+++ b/remount-fuse.sh
@@ -193,7 +193,7 @@ PY
 then
   fail_restore 'failed to update environment or config'
 fi
-startup_since=$(date '+%Y-%m-%dT%H:%M:%S%z')
+startup_since=$(date -u '+%Y-%m-%dT%H:%M:%SZ')
 if [ "$enabled" = true ]; then
   if ! compose -f "$install_dir/compose.fuse.yaml" up -d app >/dev/null; then
     fail_restore 'failed to start app: docker compose up failed'
@@ -244,6 +244,18 @@ print_timeout_diagnostics() {
   fi
   printf '  recent xymedia-app logs (bounded):\n' >&2
   docker logs --tail 80 xymedia-app 2>&1 | while IFS= read -r line; do printf '    %s\n' "$line"; done >&2 || true
+  printf '  application mount config:\n' >&2
+  if mount_config=$(curl -fsS --max-time 5 "http://127.0.0.1:${XYMEDIA_API_PORT:-18080}/api/mount/config" 2>&1); then
+    printf '%s\n' "$mount_config" | while IFS= read -r line; do printf '    %s\n' "$line"; done >&2
+  else
+    printf '    unavailable\n' >&2
+  fi
+  printf '  application mount status:\n' >&2
+  if mount_status=$(curl -fsS --max-time 5 "http://127.0.0.1:${XYMEDIA_API_PORT:-18080}/api/mount/status" 2>&1); then
+    printf '%s\n' "$mount_status" | while IFS= read -r line; do printf '    %s\n' "$line"; done >&2
+  else
+    printf '    unavailable\n' >&2
+  fi
   printf '  container diagnostics (status and device mapping only):\n' >&2
   docker inspect --format '{{.State.Status}} health={{if .State.Health}}{{.State.Health.Status}}{{else}}none{{end}} devices={{range .HostConfig.Devices}}{{.PathOnHost}}:{{.PathInContainer}} {{end}}' xymedia-app 2>&1 >&2 || true
   printf '  compose configuration validation: ' >&2