feat: upgrade buttplug package to protocol v4 and WASM v10

Upgrade the buttplug TypeScript client from class-based v3 protocol to
interface-based v4 protocol, and the Rust/WASM server from the monolithic
buttplug 9.0.9 crate to the split buttplug_core/buttplug_server/
buttplug_server_device_config 10.0.0 crates.

TypeScript changes:
- Messages are now plain interfaces with msgId()/setMsgId() helpers
- ActuatorType → OutputType, SensorType → InputType
- ScalarCmd/RotateCmd/LinearCmd → OutputCmd, SensorReadCmd → InputCmd
- Client.ts → ButtplugClient.ts, new DeviceCommand/DeviceFeature files
- Devices getter returns Map instead of array
- Removed class-transformer/reflect-metadata dependencies

Rust/WASM changes:
- Split imports across buttplug_core, buttplug_server, buttplug_server_device_config
- Removed ButtplugServerDowngradeWrapper (use ButtplugServer directly)
- Replaced ButtplugFuture/ButtplugFutureStateShared with tokio::sync::oneshot
- Updated Hardware::new for new 6-arg signature
- Uses git fork (valknarthing/buttplug) to fix missing wasm deps in buttplug_core

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/buttplug/src/client/ButtplugClient.ts

@@ -0,0 +1,242 @@
+/*!
+ * Buttplug JS Source Code File - Visit https://buttplug.io for more info about
+ * the project. Licensed under the BSD 3-Clause license. See LICENSE file in the
+ * project root for full license information.
+ *
+ * @copyright Copyright (c) Nonpolynomial Labs LLC. All rights reserved.
+ */
+
+'use strict';
+
+import { ButtplugLogger } from '../core/Logging';
+import { EventEmitter } from 'eventemitter3';
+import { ButtplugClientDevice } from './ButtplugClientDevice';
+import { IButtplugClientConnector } from './IButtplugClientConnector';
+import { ButtplugMessageSorter } from '../utils/ButtplugMessageSorter';
+import * as Messages from '../core/Messages';
+import {
+  ButtplugError,
+  ButtplugInitError,
+  ButtplugMessageError,
+} from '../core/Exceptions';
+import { ButtplugClientConnectorException } from './ButtplugClientConnectorException';
+
+export class ButtplugClient extends EventEmitter {
+  protected _pingTimer: NodeJS.Timeout | null = null;
+  protected _connector: IButtplugClientConnector | null = null;
+  protected _devices: Map<number, ButtplugClientDevice> = new Map();
+  protected _clientName: string;
+  protected _logger = ButtplugLogger.Logger;
+  protected _isScanning = false;
+  private _sorter: ButtplugMessageSorter = new ButtplugMessageSorter(true);
+
+  constructor(clientName = 'Generic Buttplug Client') {
+    super();
+    this._clientName = clientName;
+    this._logger.Debug(`ButtplugClient: Client ${clientName} created.`);
+  }
+
+  public get connected(): boolean {
+    return this._connector !== null && this._connector.Connected;
+  }
+
+  public get devices(): Map<number, ButtplugClientDevice> {
+    // While this function doesn't actually send a message, if we don't have a
+    // connector, we shouldn't have devices.
+    this.checkConnector();
+    return this._devices;
+  }
+
+  public get isScanning(): boolean {
+    return this._isScanning;
+  }
+
+  public connect = async (connector: IButtplugClientConnector) => {
+    this._logger.Info(
+      `ButtplugClient: Connecting using ${connector.constructor.name}`
+    );
+    await connector.connect();
+    this._connector = connector;
+    this._connector.addListener('message', this.parseMessages);
+    this._connector.addListener('disconnect', this.disconnectHandler);
+    await this.initializeConnection();
+  };
+
+  public disconnect = async () => {
+    this._logger.Debug('ButtplugClient: Disconnect called');
+    this._devices.clear();
+    this.checkConnector();
+    await this.shutdownConnection();
+    await this._connector!.disconnect();
+  };
+
+  public startScanning = async () => {
+    this._logger.Debug('ButtplugClient: StartScanning called');
+    this._isScanning = true;
+    await this.sendMsgExpectOk({ StartScanning: { Id: 1 } });
+  };
+
+  public stopScanning = async () => {
+    this._logger.Debug('ButtplugClient: StopScanning called');
+    this._isScanning = false;
+    await this.sendMsgExpectOk({ StopScanning: { Id: 1 } });
+  };
+
+  public stopAllDevices = async () => {
+    this._logger.Debug('ButtplugClient: StopAllDevices');
+    await this.sendMsgExpectOk({ StopCmd: { Id: 1, DeviceIndex: undefined, FeatureIndex: undefined, Inputs: true, Outputs: true } });
+  };
+
+  protected disconnectHandler = () => {
+    this._logger.Info('ButtplugClient: Disconnect event receieved.');
+    this.emit('disconnect');
+  };
+
+  protected parseMessages = (msgs: Messages.ButtplugMessage[]) => {
+    const leftoverMsgs = this._sorter.ParseIncomingMessages(msgs);
+    for (const x of leftoverMsgs) {
+      if (x.DeviceList !== undefined) {
+        this.parseDeviceList(x as Messages.DeviceList);
+        break;
+      } else if (x.ScanningFinished !== undefined) {
+        this._isScanning = false;
+        this.emit('scanningfinished', x);
+      } else if (x.InputReading !== undefined) {
+        // TODO this should be emitted from the device or feature, not the client
+        this.emit('inputreading', x);
+      } else {
+        console.log(`Unhandled message: ${x}`);
+      }
+    }
+  };
+
+  protected initializeConnection = async (): Promise<boolean> => {
+    this.checkConnector();
+    const msg = await this.sendMessage(
+      {
+        RequestServerInfo: {
+          ClientName: this._clientName,
+          Id: 1,
+          ProtocolVersionMajor: Messages.MESSAGE_SPEC_VERSION_MAJOR,
+          ProtocolVersionMinor: Messages.MESSAGE_SPEC_VERSION_MINOR
+        }
+      }
+    );
+    if (msg.ServerInfo !== undefined) {
+      const serverinfo = msg as Messages.ServerInfo;
+      this._logger.Info(
+        `ButtplugClient: Connected to Server ${serverinfo.ServerName}`
+      );
+      // TODO: maybe store server name, do something with message template version?
+      const ping = serverinfo.MaxPingTime;
+      // If the server version is lower than the client version, the server will disconnect here.
+      if (ping > 0) {
+        /*
+        this._pingTimer = setInterval(async () => {
+          // If we've disconnected, stop trying to ping the server.
+          if (!this.Connected) {
+            await this.ShutdownConnection();
+            return;
+          }
+          await this.SendMessage(new Messages.Ping());
+        } , Math.round(ping / 2));
+        */
+      }
+      await this.requestDeviceList();
+      return true;
+    } else if (msg.Error !== undefined) {
+      // Disconnect and throw an exception with the error message we got back.
+      // This will usually only error out if we have a version mismatch that the
+      // server has detected.
+      await this._connector!.disconnect();
+      const err = msg.Error as Messages.Error;
+      throw ButtplugError.LogAndError(
+        ButtplugInitError,
+        this._logger,
+        `Cannot connect to server. ${err.ErrorMessage}`
+      );
+    }
+    return false;
+  }
+
+  private parseDeviceList = (list: Messages.DeviceList) => {
+    for (let [_, d] of Object.entries(list.Devices)) {
+      if (!this._devices.has(d.DeviceIndex)) {
+        const device = ButtplugClientDevice.fromMsg(
+          d,
+          this.sendMessageClosure
+        );
+        this._logger.Debug(`ButtplugClient: Adding Device: ${device}`);
+        this._devices.set(d.DeviceIndex, device);
+        this.emit('deviceadded', device);
+      } else {
+        this._logger.Debug(`ButtplugClient: Device already added: ${d}`);
+      }
+    }
+    for (let [index, device] of this._devices.entries()) {
+      if (!list.Devices.hasOwnProperty(index.toString())) {
+        this._devices.delete(index);
+        this.emit('deviceremoved', device);
+      }
+    }
+  }
+
+  protected requestDeviceList = async () => {
+    this.checkConnector();
+    this._logger.Debug('ButtplugClient: ReceiveDeviceList called');
+    const response = (await this.sendMessage(
+      {
+        RequestDeviceList: { Id: 1 }
+      }
+    ));
+    this.parseDeviceList(response.DeviceList!);
+  };
+
+  protected shutdownConnection = async () => {
+    await this.stopAllDevices();
+    if (this._pingTimer !== null) {
+      clearInterval(this._pingTimer);
+      this._pingTimer = null;
+    }
+  };
+
+  protected async sendMessage(
+    msg: Messages.ButtplugMessage
+  ): Promise<Messages.ButtplugMessage> {
+    this.checkConnector();
+    const p = this._sorter.PrepareOutgoingMessage(msg);
+    await this._connector!.send(msg);
+    return await p;
+  }
+
+  protected checkConnector() {
+    if (!this.connected) {
+      throw new ButtplugClientConnectorException(
+        'ButtplugClient not connected'
+      );
+    }
+  }
+
+  protected sendMsgExpectOk = async (
+    msg: Messages.ButtplugMessage
+  ): Promise<void> => {
+    const response = await this.sendMessage(msg);
+    if (response.Ok !== undefined) {
+      return;
+    } else if (response.Error !== undefined) {
+      throw ButtplugError.FromError(response as Messages.Error);
+    } else {
+      throw ButtplugError.LogAndError(
+        ButtplugMessageError,
+        this._logger,
+        `Message ${response} not handled by SendMsgExpectOk`
+      );
+    }
+  };
+
+  protected sendMessageClosure = async (
+    msg: Messages.ButtplugMessage
+  ): Promise<Messages.ButtplugMessage> => {
+    return await this.sendMessage(msg);
+  };
+}