Report daily session-open delay to the master dashboard

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

lib/auto-trade.ts

@@ -138,6 +138,14 @@ function openJitterMinutes(centralDay: string): number {
     return jitter;
 }
 
+/** Today's session-open delay in minutes, for reporting to the master. */
+export function todaysSessionOpenDelay(): number {
+    const centralDay = new Intl.DateTimeFormat('en-CA', {
+        timeZone: 'America/Chicago',
+    }).format(new Date());
+    return openJitterMinutes(centralDay);
+}
+
 /**
  * Returns true when trading is not allowed based on the trading_hours setting.
  *
@@ -162,10 +170,7 @@ function isInNoTradeWindow(): boolean {
         timeZone: 'America/Chicago',
     }).format(now); // "Sun", "Mon", ... "Sat"
     const timeMinutes = hour * 60 + minute; // minutes since midnight
-    const centralDay = new Intl.DateTimeFormat('en-CA', {
+    const jitter = todaysSessionOpenDelay();
-        timeZone: 'America/Chicago',
-    }).format(now); // "2026-09-06"
-    const jitter = openJitterMinutes(centralDay);
 
     const mode = getSetting('trading_hours') ?? 'full_cme';
 
@@ -727,5 +732,6 @@ export function getSchedulerStatus() {
         lastRun: state.lastRun,
         intervalSeconds: parseInt(getSetting('tick_interval_seconds') ?? '60', 10),
         stopAfterAll: state.stopAfterAll,
+        sessionOpenDelayMin: todaysSessionOpenDelay(),
     };
 }

lib/master-protocol.ts

@@ -33,6 +33,9 @@ export interface SchedulerState {
     lastRun: string | null;
     intervalSeconds: number;
     stopAfterAll?: boolean;
+    /** Today's random session-open delay in minutes (1–20), drawn once per
+     *  Central-time day. Optional so an older master simply ignores it. */
+    sessionOpenDelayMin?: number;
 }
 
 export interface AutomationSummary {