feat(ts-protocol): surface invokerGroups on TS3TextMessage via pure mapper

src/ts-protocol/client.ts

@@ -61,6 +61,24 @@ export interface TS3TextMessage {
   invokerUid: string;
   message: string;
   targetMode: number; // 1=private, 2=channel, 3=server
+  invokerGroups: string[]; // sender's TS server-group ids; [] when not in view cache
+}
+
+/**
+ * Map the library's TextMessage to our wrapper. Preserves invokerGroups (the
+ * sender's TS server groups), which the library populates only when the sender
+ * is in the bot's client-view cache; otherwise it is []. Used by the chat
+ * command permission gate.
+ */
+export function toTS3TextMessage(msg: TextMessage): TS3TextMessage {
+  return {
+    invokerName: msg.invokerName,
+    invokerId: String(msg.invokerID),
+    invokerUid: msg.invokerUID,
+    message: msg.message,
+    targetMode: msg.targetMode,
+    invokerGroups: msg.invokerGroups ?? [],
+  };
 }
 
 export class TS3Client extends EventEmitter {
@@ -203,14 +221,7 @@ export class TS3Client extends EventEmitter {
     });
 
     this.client.on("textMessage", (msg: TextMessage) => {
-      const tsMsg: TS3TextMessage = {
-        invokerName: msg.invokerName,
-        invokerId: String(msg.invokerID),
-        invokerUid: msg.invokerUID,
-        message: msg.message,
-        targetMode: msg.targetMode,
-      };
-      this.emit("textMessage", tsMsg);
+      this.emit("textMessage", toTS3TextMessage(msg));
     });
 
     this.client.on("disconnected", (err) => {

src/ts-protocol/text-message.test.ts

@@ -0,0 +1,43 @@
+import { describe, it, expect } from "vitest";
+import { toTS3TextMessage } from "./client.js";
+import type { TextMessage } from "@honeybbq/teamspeak-client";
+
+function makeMsg(over: Partial<TextMessage> = {}): TextMessage {
+  return {
+    invokerName: "Alice",
+    invokerUID: "uid-abc",
+    message: "!stop",
+    invokerGroups: ["6", "8"],
+    targetMode: 2,
+    targetID: 0n,
+    invokerID: 5,
+    ...over,
+  };
+}
+
+describe("toTS3TextMessage", () => {
+  it("maps core fields and stringifies invokerID", () => {
+    const r = toTS3TextMessage(makeMsg());
+    expect(r.invokerName).toBe("Alice");
+    expect(r.invokerId).toBe("5");
+    expect(r.invokerUid).toBe("uid-abc");
+    expect(r.message).toBe("!stop");
+    expect(r.targetMode).toBe(2);
+  });
+
+  it("preserves the sender's server groups", () => {
+    expect(toTS3TextMessage(makeMsg({ invokerGroups: ["6"] })).invokerGroups).toEqual(["6"]);
+  });
+
+  it("defaults missing invokerGroups to an empty array", () => {
+    const partial = {
+      invokerName: "Bob",
+      invokerUID: "u",
+      message: "!stop",
+      targetMode: 1,
+      targetID: 0n,
+      invokerID: 7,
+    } as unknown as TextMessage;
+    expect(toTS3TextMessage(partial).invokerGroups).toEqual([]);
+  });
+});