N500/wrap exception 2 (#14)

* Wrap exception from deferred to capture the current stack trace

* Use CopyableThrowable to support stacktrace recovery

Author: nerzhulart

acp/api/acp.api

@@ -206,15 +206,21 @@ public final class com/agentclientprotocol/common/SessionParameters {
 	public final fun get_meta ()Lkotlinx/serialization/json/JsonElement;
 }
 
-public final class com/agentclientprotocol/protocol/AcpExpectedError : java/lang/Exception {
+public final class com/agentclientprotocol/protocol/AcpExpectedError : java/lang/Exception, kotlinx/coroutines/CopyableThrowable {
 	public fun <init> (Ljava/lang/String;)V
+	public fun createCopy ()Lcom/agentclientprotocol/protocol/AcpExpectedError;
+	public synthetic fun createCopy ()Ljava/lang/Throwable;
+	public fun getMessage ()Ljava/lang/String;
 }
 
-public final class com/agentclientprotocol/protocol/JsonRpcException : java/lang/Exception {
+public final class com/agentclientprotocol/protocol/JsonRpcException : java/lang/Exception, kotlinx/coroutines/CopyableThrowable {
 	public fun <init> (ILjava/lang/String;Lkotlinx/serialization/json/JsonElement;)V
 	public synthetic fun <init> (ILjava/lang/String;Lkotlinx/serialization/json/JsonElement;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun createCopy ()Lcom/agentclientprotocol/protocol/JsonRpcException;
+	public synthetic fun createCopy ()Ljava/lang/Throwable;
 	public final fun getCode ()I
 	public final fun getData ()Lkotlinx/serialization/json/JsonElement;
+	public fun getMessage ()Ljava/lang/String;
 }
 
 public final class com/agentclientprotocol/protocol/Protocol : com/agentclientprotocol/protocol/RpcMethodsOperations {
@@ -262,10 +268,6 @@ public final class com/agentclientprotocol/protocol/Protocol_extensionsKt {
 	public static synthetic fun setRequestHandler$default (Lcom/agentclientprotocol/protocol/RpcMethodsOperations;Lcom/agentclientprotocol/model/AcpMethod$AcpRequestResponseMethod;Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)V
 }
 
-public final class com/agentclientprotocol/protocol/RequestTimeoutException : java/lang/Exception {
-	public fun <init> (Ljava/lang/String;)V
-}
-
 public abstract interface class com/agentclientprotocol/protocol/RpcMethodsOperations {
 	public abstract fun sendNotificationRaw (Lcom/agentclientprotocol/model/AcpMethod$AcpNotificationMethod;Lkotlinx/serialization/json/JsonElement;)V
 	public static synthetic fun sendNotificationRaw$default (Lcom/agentclientprotocol/protocol/RpcMethodsOperations;Lcom/agentclientprotocol/model/AcpMethod$AcpNotificationMethod;Lkotlinx/serialization/json/JsonElement;ILjava/lang/Object;)V

acp/src/commonMain/kotlin/com/agentclientprotocol/protocol/Protocol.kt

@@ -32,7 +32,10 @@ internal value class OutgoingRequestId(val id: RequestId)
 /**
  * An exception that gracefully handled and passed to the counterpart.
  */
-public class AcpExpectedError(message: String) : Exception(message)
+@OptIn(ExperimentalCoroutinesApi::class)
+public class AcpExpectedError(override val message: String) : Exception(message), CopyableThrowable<AcpExpectedError> {
+    override fun createCopy(): AcpExpectedError = AcpExpectedError(message).also { it.addSuppressed(this) }
+}
 
 /**
  * Throws [AcpExpectedError] that gracefully handled and passed to the counterpart.
@@ -42,19 +45,17 @@ public fun acpFail(message: String): Nothing = throw AcpExpectedError(message)
 public fun jsonRpcMethodNotFound(message: String): Nothing =
     throw JsonRpcException(JsonRpcErrorCode.METHOD_NOT_FOUND, message)
 
-/**
- * Exception thrown when a request times out.
- */
-public class RequestTimeoutException(message: String) : Exception(message)
-
 /**
  * Exception thrown for JSON-RPC protocol errors.
  */
+@OptIn(ExperimentalCoroutinesApi::class)
 public class JsonRpcException(
     public val code: Int,
-    message: String,
+    public override val message: String,
     public val data: JsonElement? = null
-) : Exception(message)
+) : Exception(message), CopyableThrowable<JsonRpcException> {
+    override fun createCopy(): JsonRpcException = JsonRpcException(code, message, data).also { it.addSuppressed(this) }
+}
 
 /**
  * Exception thrown when a request is cancelled explicitly by invoking [AcpMethod.MetaMethods.CancelRequest] from the calling site