Index: cloudsync/utils/watchdog.py
===================================================================
diff -u -r898cc02a49599b59d062b8f939d5587bdf0b8bd6 -radec5be657a174b63971987fcabd492e58720712
--- cloudsync/utils/watchdog.py	(.../watchdog.py)	(revision 898cc02a49599b59d062b8f939d5587bdf0b8bd6)
+++ cloudsync/utils/watchdog.py	(.../watchdog.py)	(revision adec5be657a174b63971987fcabd492e58720712)
@@ -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 -r99d35f3d5898d50372e1745b96b393db40cd8394 -radec5be657a174b63971987fcabd492e58720712
--- cs.py	(.../cs.py)	(revision 99d35f3d5898d50372e1745b96b393db40cd8394)
+++ cs.py	(.../cs.py)	(revision adec5be657a174b63971987fcabd492e58720712)
@@ -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>]"