Fix for-loop real widening coercions

notes/nested_range_baseline.md

@@ -0,0 +1,9 @@
+# Nested Range Benchmark Baseline
+
+Date: 2026-02-16
+
+Command:
+`BENCHMARKS=true timeout 20s ./gradlew :lynglib:jvmTest --tests NestedRangeBenchmarkTest --rerun-tasks`
+
+Result:
+- nested-happy elapsed=56 ms