Add System/network_watchdog.sh — services-layer connectivity watchdog

Checks:
  1. Internet reachability (gates all remaining checks)
  2. DDNS sync — public IP vs Cloudflare DNS record, restarts Gmer4Lfe.com container on mismatch
  3. Tailscale status — notify only, no auto-restart
  4. NPM proxy — external curl to https://gmer4lfe.com, 2-strike system before NginxProxyManager restart

Config: master.conf NETWORK_WATCHDOG_* block, host1.conf HOST1_NETWORK_WATCHDOG_* values
Added to SYSTEM_WATCHDOG_SCRIPTS — called by system_watchdog.sh each cycle

Fix: storage_watchdog.sh was calling get_strikes/set_strikes without defining them —
added local definitions (same pattern as docker_watchdog.sh and stability_watchdog.sh)

Watchdogs/System/storage_watchdog.sh

@@ -160,6 +160,17 @@ detect_hosts
 touch "$STORAGE_WATCHDOG_STATE_FILE" 2>/dev/null
 touch "$WATCHDOG_APPDATA_GROWTH_FILE" 2>/dev/null
 
+# ━━━ Strike helpers ━━━
+get_strikes() { grep "^${1}:" "${2}" 2>/dev/null | cut -d: -f2 || echo "0"; }
+set_strikes() {
+    local key="$1" count="$2" file="$3"
+    if grep -q "^${key}:" "$file" 2>/dev/null; then
+        sed -i "s|^${key}:.*|${key}:${count}|" "$file"
+    else
+        echo "${key}:${count}" >> "$file"
+    fi
+}
+
 # ==============================================================================================
 # ━━━ Status ━━━
 # ==============================================================================================