iOS: wire node commands and incremental TTS

apps/shared/OpenClawKit/Sources/OpenClawKit/ChatCommands.swift

@@ -0,0 +1,23 @@
+import Foundation
+
+public enum OpenClawChatCommand: String, Codable, Sendable {
+    case push = "chat.push"
+}
+
+public struct OpenClawChatPushParams: Codable, Sendable, Equatable {
+    public var text: String
+    public var speak: Bool?
+
+    public init(text: String, speak: Bool? = nil) {
+        self.text = text
+        self.speak = speak
+    }
+}
+
+public struct OpenClawChatPushPayload: Codable, Sendable, Equatable {
+    public var messageId: String?
+
+    public init(messageId: String? = nil) {
+        self.messageId = messageId
+    }
+}