Index: cloudsync/utils/watchdog.py
===================================================================
diff -u -r8fe9c82ff8cd968ebdca518f35c3264a25a02927 -r94aee6790700d23f638d8216e1bbf765f88da833
--- cloudsync/utils/watchdog.py	(.../watchdog.py)	(revision 8fe9c82ff8cd968ebdca518f35c3264a25a02927)
+++ cloudsync/utils/watchdog.py	(.../watchdog.py)	(revision 94aee6790700d23f638d8216e1bbf765f88da833)
@@ -12,7 +12,8 @@
 
 
 # Default sentinel file path — cs.py monitors this to trigger process restart
-SENTINEL_PATH = "/tmp/cloudsync_restart_sentinel"
+# On-device: /media/sd-card/cloudsync (stable across registration & operation modes)
+SENTINEL_PATH = "/media/sd-card/cloudsync/cloudsync_restart_sentinel"
 
 
 class Watchdog:
Index: cs.py
===================================================================
diff -u -r9f7bb04f030caa9d37d64f2ab0f88dcc6c92e05d -r94aee6790700d23f638d8216e1bbf765f88da833
--- cs.py	(.../cs.py)	(revision 9f7bb04f030caa9d37d64f2ab0f88dcc6c92e05d)
+++ cs.py	(.../cs.py)	(revision 94aee6790700d23f638d8216e1bbf765f88da833)
@@ -14,7 +14,7 @@
 logger = logging.getLogger(__name__)
 
 DELAY = 0.5
-SENTINEL_FILE = "/tmp/cloudsync_restart_sentinel"
+SENTINEL_FILE = "/media/sd-card/cloudsync/cloudsync_restart_sentinel"
 SENTINEL_CHECK_INTERVAL = 5
 USAGE_FORMAT = "Usage: ./cs.py <start|stop|restart|status|monitor> [debug|info|warning|error] [upgrade|update|<normal>]"