runtime: split ipc queue and runner helpers

src/ipc-message-forwarding.ts

@@ -0,0 +1,45 @@
+import type {
+  IpcMessageForwardResult,
+  IpcMessagePayload,
+} from './ipc-types.js';
+import type { RegisteredGroup } from './types.js';
+
+export async function forwardAuthorizedIpcMessage(
+  msg: IpcMessagePayload,
+  sourceGroup: string,
+  isMain: boolean,
+  roomBindings: Record<string, RegisteredGroup>,
+  sendMessage: (
+    jid: string,
+    text: string,
+    senderRole?: string,
+    runId?: string,
+  ) => Promise<void>,
+): Promise<IpcMessageForwardResult> {
+  if (!(msg.type === 'message' && msg.chatJid && msg.text)) {
+    return { outcome: 'ignored', senderRole: msg.senderRole ?? null };
+  }
+
+  const targetGroup = roomBindings[msg.chatJid];
+  const isMainOverride = isMain === true;
+  if (
+    !(isMainOverride || (targetGroup && targetGroup.folder === sourceGroup))
+  ) {
+    return {
+      outcome: 'blocked',
+      chatJid: msg.chatJid,
+      targetGroup: targetGroup?.folder ?? null,
+      isMainOverride,
+      senderRole: msg.senderRole ?? null,
+    };
+  }
+
+  await sendMessage(msg.chatJid, msg.text, msg.senderRole, msg.runId);
+  return {
+    outcome: 'sent',
+    chatJid: msg.chatJid,
+    targetGroup: targetGroup?.folder ?? null,
+    isMainOverride,
+    senderRole: msg.senderRole ?? null,
+  };
+}