Add daemon process watchdog with crash rate-limiting

zygisk/module/daemon

@@ -42,5 +42,5 @@ fi
 
 [ "$debug" = "true" ] && log -p d -t "Vector" "Starting daemon $*"
 
-# Launch the daemon
-exec /system/bin/app_process $java_options /system/bin --nice-name=lspd org.matrix.vector.daemon.VectorDaemon "$@" >/dev/null 2>&1
+# Launch the daemon (no exec so the watchdog loop in service.sh can restart it)
+/system/bin/app_process $java_options /system/bin --nice-name=lspd org.matrix.vector.daemon.VectorDaemon "$@" >/dev/null 2>&1

zygisk/module/service.sh

@@ -1,6 +1,32 @@
-# Extract the directory path and change directory 
+# Extract the directory path and change directory
 MODDIR="${0%/*}"
 cd "$MODDIR" || exit 1
 
-# Start the daemon directly in the background within a private mount namespace
-unshare --propagation slave -m "$MODDIR/daemon" --system-server-max-retry=3 "$@" &
+# Watchdog loop: automatically restart the daemon if it crashes.
+# Each iteration creates a fresh mount namespace (unshare -m), so no stale
+# mount points accumulate.
+#
+# Rate-limiting: if the daemon crashes more than 3 times within any 60-second
+# window the watchdog enters a 3-minute cooldown before retrying, then resets
+# the counter.  Otherwise it restarts after a 5-second pause.
+fails=0
+window_start=$(date +%s)
+while true; do
+    unshare --propagation slave -m "$MODDIR/daemon" --system-server-max-retry=3 "$@"
+    # daemon exited (crashed)
+    now=$(date +%s)
+    fails=$((fails + 1))
+    if [ $((now - window_start)) -le 60 ] && [ $fails -gt 3 ]; then
+        # exceeded crash budget → cooldown
+        sleep 180
+        fails=0
+        window_start=$(date +%s)
+    elif [ $((now - window_start)) -gt 60 ]; then
+        # window expired, reset
+        fails=1
+        window_start=$now
+        sleep 5
+    else
+        sleep 5
+    fi
+done &