Method pruneExpired

fbi/fbi.ts:97–102

remove messages older than 30 days from a chat cache, return true if any pruned

(chat: CachedChat)

class FbiPlugin extends Plugin {
  description = `FBI 跨群组追踪\n\n${HELP}`;

  cmdHandlers = { fbi: this.onCmd.bind(this) };
  listenMessageHandler = this.onMsg.bind(this);

  private configDb: any;
  private cacheDb: any;
  private sv = new Map<string, SvEntry>();
  private chatCache = new Map<string, CachedChat>();