Room for the deriver, dialectic prefetches from three agents and their approval guardians at once. Under full load (deriver + dialectic + guardian probes): guardian p50 0.4 s / max 10 s, no KV-space failures. VRAM 8.9 GB. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>