feat: add customer portal and RTC voice diagnostics

internal/orchestration/provider_processing.go

@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"log/slog"
 	"time"
 
 	"data-terminal-cloud/internal/billing"
@@ -167,6 +168,10 @@ func (p *StartProcessor) Handle(ctx context.Context, event outbox.Event) error {
 				}
 				return outbox.Retryable(err)
 			}
+			slog.ErrorContext(ctx, "provider voice chat start rejected",
+				"provider", providerName,
+				"error", err,
+			)
 			return p.failRejectedStart(ctx, event.AggregateID, tenantID, "provider_start_rejected", "provider permanently rejected voice chat start")
 		}
 	}