Emit rebalance clipping diagnostics

crates/fidc-core/src/engine.rs

@@ -224,6 +224,7 @@ where
             let daily_fill_count = report.fill_events.len();
             let day_orders = report.order_events.clone();
             let day_fills = report.fill_events.clone();
+            let broker_diagnostics = report.diagnostics.clone();
             self.extend_result(&mut result, report);
 
             portfolio.update_prices(execution_date, &self.data, PriceField::Close)?;
@@ -249,7 +250,12 @@ where
                 .chain(decision.notes.into_iter())
                 .collect::<Vec<_>>()
                 .join(" | ");
-            let diagnostics = decision.diagnostics.join(" | ");
+            let diagnostics = decision
+                .diagnostics
+                .into_iter()
+                .chain(broker_diagnostics.into_iter())
+                .collect::<Vec<_>>()
+                .join(" | ");
             let holdings_for_day = portfolio.holdings_summary(execution_date);
 
             result.equity_curve.push(DailyEquityPoint {