iOS: wire node commands and incremental TTS

apps/ios/Sources/Capabilities/NodeCapabilityRouter.swift

@@ -0,0 +1,25 @@
+import Foundation
+import OpenClawKit
+
+@MainActor
+final class NodeCapabilityRouter {
+    enum RouterError: Error {
+        case unknownCommand
+        case handlerUnavailable
+    }
+
+    typealias Handler = (BridgeInvokeRequest) async throws -> BridgeInvokeResponse
+
+    private let handlers: [String: Handler]
+
+    init(handlers: [String: Handler]) {
+        self.handlers = handlers
+    }
+
+    func handle(_ request: BridgeInvokeRequest) async throws -> BridgeInvokeResponse {
+        guard let handler = handlers[request.command] else {
+            throw RouterError.unknownCommand
+        }
+        return try await handler(request)
+    }
+}