v5.5: hourly heartbeat log line above all gates

The ea-watchdog inferred tick starvation from expert-log silence, but a
stable placed grid is also silent — it restart-looped the container 11
times on Jul 15-16. The heartbeat fires on any tick once per hour before
every gate (weekend block, stand-down, drawdown), so silence >1h during
market hours now unambiguously means a dead chart feed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

OrdersEA_Smart_Grid_BO.mq5

@@ -5,12 +5,12 @@
 //+------------------------------------------------------------------+
 #property copyright "Copyright 2024, Garfield Heron"
 #property link      "https://fetcherpay.com"
-#property version   "5.4"
+#property version   "5.5"
 
 #include <Trade\Trade.mqh>
 #include <Trade\PositionInfo.mqh>
 
-#define VERSION "Version 5.4 Smart Grid Breakout BO MT5"
+#define VERSION "Version 5.5 Smart Grid Breakout BO MT5"
 #define MAX_TRADES 600
 #define MAX_LOG_TRADES 1200
 
@@ -1320,6 +1320,18 @@ void OnTick()
       return;
      }
 
+   // --- Hourly heartbeat (5.5) — ABOVE every gate on purpose: it fires on
+   // any tick, so log silence >1h during market hours means the chart feed
+   // is dead (tick starvation), never a blocked/quiet EA. The ea-watchdog
+   // keys off this; without it, a stable placed grid looks identical to a
+   // starved chart and the watchdog restart-loops (seen Jul 15-16).
+   static datetime lastHeartbeat = 0;
+   if(TimeCurrent() - lastHeartbeat >= 3600)
+     {
+      PrintS("hb " + DoubleToString(SymbolInfoDouble(_Symbol, SYMBOL_BID), _Digits));
+      lastHeartbeat = TimeCurrent();
+     }
+
    // --- Per-EA daily drawdown (3.1B) ---
    if(!CheckDailyDrawdown())
      {