refactor: decompose runtime coordination and runner internals (PR6)

runners/codex-runner/src/room-role-context.ts

@@ -1,23 +1,4 @@
-export interface RoomRoleContext {
-  serviceId: string;
-  role: 'owner' | 'reviewer';
-  ownerServiceId: string;
-  reviewerServiceId: string;
-  failoverOwner: boolean;
-}
-
-export function prependRoomRoleHeader(
-  prompt: string,
-  roomRoleContext?: RoomRoleContext,
-): string {
-  if (!roomRoleContext) {
-    return prompt;
-  }
-
-  const header =
-    `[ROOM_ROLE self=${roomRoleContext.serviceId} role=${roomRoleContext.role} ` +
-    `owner=${roomRoleContext.ownerServiceId} reviewer=${roomRoleContext.reviewerServiceId} ` +
-    `failover=${roomRoleContext.failoverOwner ? 1 : 0}]`;
-
-  return `${header}\n\n${prompt}`;
-}
+export {
+  prependRoomRoleHeader,
+  type RoomRoleContext,
+} from 'ejclaw-runners-shared';