Refresh dailyPnL on a fixed hourly interval instead of throttling

- Replace the reactive throttle with a proactive setInterval in requestSync
  that fires fetchDaysTraded exactly once per hour per client
- Remove post-fill fetchDaysTraded calls from auto-trade.ts — no longer
  needed and were causing bursts of report API requests on simultaneous fills
- Guard against duplicate intervals if requestSync fires more than once

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/tradovate-class.ts

@@ -34,8 +34,8 @@ export class TradovateClient {
 
     /** True once fetchDaysTraded() has finished its last full run */
     public fetchDaysComplete = false;
-    /** Timestamp (ms) of the last successful fetchDaysTraded run — throttled to once per hour */
-    private lastDaysFetch = 0;
+    /** NodeJS.Timeout handle for the hourly dailyPnL refresh */
+    private daysFetchInterval: ReturnType<typeof setInterval> | null = null;
     /** Last error per account name from fetchDaysTraded() */
     public lastFetchErrors: Record<string, string> = {};
     /** Raw reports API response sample per account (first 100 chars) for debugging */
@@ -290,6 +290,13 @@ export class TradovateClient {
 
                 this.fetchDaysTraded();
 
+                // Refresh daily P&L once per hour — avoids hammering the reports API
+                if (this.daysFetchInterval) clearInterval(this.daysFetchInterval);
+                this.daysFetchInterval = setInterval(
+                    () => this.fetchDaysTraded().catch((err) => console.error('[hourly fetchDaysTraded]', err)),
+                    60 * 60 * 1_000
+                );
+
                 if (this.products.length > 0) {
                     this.syncComplete = true;
                     this.callbackOnSyncRequest();
@@ -315,10 +322,6 @@ export class TradovateClient {
 
     public async fetchDaysTraded(): Promise<void> {
         if (!this.accessInfo?.accessToken) return;
-        // Throttle to at most once per hour to avoid rate-limiting the reports API
-        const ONE_HOUR = 60 * 60 * 1_000;
-        if (Date.now() - this.lastDaysFetch < ONE_HOUR) return;
-        this.lastDaysFetch = Date.now();
         this.fetchDaysComplete = false;
 
         const authHeaders = { Authorization: `Bearer ${this.accessInfo.accessToken}` };