fix auto resolving for spp install

src/commonMain/kotlin/spp.protocol/artifact/trace/Trace.kt

@@ -38,7 +38,7 @@ data class Trace(
     val traceIds: List<String>,
     val partial: Boolean = false,
     val segmentId: String? = null,
-    val meta: Map<String, String> = mutableMapOf()
+    val meta: MutableMap<String, String> = mutableMapOf()
 ) {
     override fun equals(other: Any?): Boolean {
         if (this === other) return true

src/commonMain/kotlin/spp.protocol/artifact/trace/TraceSpan.kt

@@ -70,7 +70,7 @@ data class TraceSpan(
         meta[tag] = value
     }
 
-    fun putMetaInt(tag: String): Int? {
+    fun getMetaInt(tag: String): Int? {
         return meta[tag]?.toIntOrNull()
     }