SGLANG_DEBUG_CP_SHARED_KV also disables tai IPC materialize -> NSA index fail-fast at warmup (unusable in this config). Add a logging-only flag that emits the sender/worker transfer-partition dumps (main-KV pages/positions vs NSA-state pages/positions) without that side effect, and lift the 64-log cap, so we can diff the state-vs-main-KV partition for a cache-hit vs cache-miss. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>