Add proptest regression file
https://claude.ai/code/session_01D4p7bFEfzrKdpNshGCqHiC
diff --git a/tests/property.proptest-regressions b/tests/property.proptest-regressions
new file mode 100644
index 0000000..eecc703
--- /dev/null
+++ b/tests/property.proptest-regressions
@@ -0,0 +1,7 @@
+# Seeds for failure cases proptest has generated in the past. It is
+# automatically read and these particular cases re-run before any
+# novel cases are generated.
+#
+# It is recommended to check this file in to source control so that
+# everyone who runs the test benefits from these saved cases.
+cc 233d1a95a3dfe5ebcffb7f33e5358b681fa4767f1d344ce80a61ac961fedee1a # shrinks to val = WithItems { title: "", item: [Item { name: "", value: 0 }] }