Method reapDeadClients

src/mcp/daemon.ts:484–498

* Drop every connected client whose peer process is gone. Returns the count * reaped. `isAlive` is injected for testing. Clients with unknown pids (no * client-hello) are skipped — they rely on the socket-close path.

(isAlive: (pid: number) => boolean)

   * client-hello) are skipped — they rely on the socket-close path.
   */
  reapDeadClients(isAlive: (pid: number) => boolean): number {
    if (this.clients.size === 0) return 0;
    let reaped = 0;
    for (const session of [...this.clients]) {
      const peers = this.clientPeers.get(session);
      if (!peers || !peerIsDead(peers, isAlive)) continue;
      process.stderr.write(
        `[CodeGraph daemon] Reaping client with dead peer (pid ${peers.pid}); clients=${this.clients.size - 1}.\n`
      );
      try { session.stop(); } catch { /* best-effort */ }
      this.dropClient(session);
      reaped++;
    }
    return reaped;
  }

  private cleanupLockfile(): void {
    try {