Function isMainThreadSource

src/services/compact/microCompact.ts:259–261

(querySource: QuerySource | undefined)

// cached-MC `=== 'repl_main_thread'` check was a latent bug — users with a
// non-default output style were silently excluded from cached MC.
function isMainThreadSource(querySource: QuerySource | undefined): boolean {
  return !querySource || querySource.startsWith('repl_main_thread')
}

export async function microcompactMessages(
  messages: Message[],