fix to make it build on all platforms

lynglib/src/androidMain/kotlin/net/sergeych/lyng/PerfDefaults.android.kt

@@ -15,4 +15,6 @@ actual object PerfDefaults {
 
     actual val PRIMITIVE_FASTOPS: Boolean = true
     actual val RVAL_FASTPATH: Boolean = true
+    // Regex caching aligns with JVM behavior on Android (Dalvik/ART)
+    actual val REGEX_CACHE: Boolean = true
 }

lynglib/src/jsMain/kotlin/net/sergeych/lyng/PerfDefaults.js.kt

@@ -16,4 +16,6 @@ actual object PerfDefaults {
     actual val PRIMITIVE_FASTOPS: Boolean = true
     // Conservative default for non-JVM until validated
     actual val RVAL_FASTPATH: Boolean = false
+    // Regex caching: disabled by default on JS until validated
+    actual val REGEX_CACHE: Boolean = false
 }

lynglib/src/nativeMain/kotlin/net/sergeych/lyng/PerfDefaults.native.kt

@@ -16,4 +16,6 @@ actual object PerfDefaults {
     actual val PRIMITIVE_FASTOPS: Boolean = true
     // Conservative default for non-JVM until validated
     actual val RVAL_FASTPATH: Boolean = false
+    // Regex caching: keep OFF by default on Native until benchmarks validate it
+    actual val REGEX_CACHE: Boolean = false
 }

lynglib/src/wasmJsMain/kotlin/net/sergeych/lyng/PerfDefaults.wasmJs.kt

@@ -16,4 +16,6 @@ actual object PerfDefaults {
     actual val PRIMITIVE_FASTOPS: Boolean = true
     // Conservative default for non-JVM until validated
     actual val RVAL_FASTPATH: Boolean = false
+    // Regex caching: disabled by default on WasmJS until validated
+    actual val REGEX_CACHE: Boolean = false
 }