Fix backtest consistency

scripts/benchmark-backtest-performance.sh

@@ -97,6 +97,30 @@ SCORE=${SCORE:-0.00}
 # Fix malformed values
 SCORE=$(echo "$SCORE" | sed 's/^0*$/0.00/' | xargs)
 
+# Business Logic Validation: Check Final PnL against first run baseline
+FIRST_RUN_FINAL_PNL=$(head -2 src/Managing.Workers.Tests/performance-benchmarks.csv 2>/dev/null | tail -1 | cut -d',' -f15 | xargs)
+
+if [ -n "$FIRST_RUN_FINAL_PNL" ] && [ "$FIRST_RUN_FINAL_PNL" != "FinalPnL" ]; then
+    # Compare against the first run in the file (the baseline)
+    DIFF=$(echo "scale=2; $FINAL_PNL - $FIRST_RUN_FINAL_PNL" | bc -l 2>/dev/null || echo "0")
+    ABS_DIFF=$(echo "scale=2; if ($DIFF < 0) -$DIFF else $DIFF" | bc -l 2>/dev/null || echo "0")
+
+    if (( $(echo "$ABS_DIFF > 0.01" | bc -l 2>/dev/null || echo "0") )); then
+        echo -e "${RED}❌ BUSINESS LOGIC WARNING: Final PnL differs from baseline!${NC}"
+        echo "   Baseline (first run): $FIRST_RUN_FINAL_PNL"
+        echo "   Current:              $FINAL_PNL"
+        echo "   Difference:           $DIFF"
+        echo -e "${YELLOW}⚠️  This may indicate that changes broke business logic!${NC}"
+        echo -e "${YELLOW}   Please verify that optimizations didn't change backtest behavior.${NC}"
+    else
+        echo -e "${GREEN}✅ Business Logic OK: Final PnL matches baseline (±$ABS_DIFF)${NC}"
+    fi
+else
+    # If no baseline exists, establish one
+    echo -e "${BLUE}ℹ️  Establishing new baseline - this is the first run${NC}"
+    echo -e "${GREEN}✅ First run completed successfully${NC}"
+fi
+
 # Create CSV row
 CSV_ROW="$TIMESTAMP,ExecuteBacktest_With_Large_Dataset_Should_Show_Performance_Telemetry,$CANDLES_COUNT,$EXECUTION_TIME,$PROCESSING_RATE,$MEMORY_START,$MEMORY_END,$MEMORY_PEAK,$SIGNAL_UPDATES,$SIGNAL_SKIPPED,$SIGNAL_EFFICIENCY,$BACKTEST_STEPS,$AVG_SIGNAL_UPDATE,$AVG_BACKTEST_STEP,$FINAL_PNL,$WIN_RATE,$GROWTH_PERCENTAGE,$SCORE,$COMMIT_HASH,$BRANCH_NAME,$ENVIRONMENT"