fix(settings): honor per-day trading hours and refresh SuperAdmin overlay

Use trading_hours_by_day for close_price gates, prefer public SuperAdmin fetch, and add refresh endpoint/command so stale last-good cache no longer keeps switches like enable_automation off.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/LivePriceCacheService.php

@@ -142,6 +142,8 @@ class LivePriceCacheService
             : ['sell' => $payload['sell'] ?? 0, 'buy' => $payload['buy'] ?? 0];
         $payload['last_historical'] = $display->resolveHistoricalBasePrice();
 
+        $payload = $config->applyGlobalTradingHoursToPayload($payload);
+
         return app(ZaarboxPriceService::class)->attachGoldOunceToPayload($payload);
     }
 }