large: batch profile flipped to the runner's qualified 2048/512 (fastest measured prefill, no decode change)

AGENTS.md

@@ -138,10 +138,11 @@ RDNA 3.5 native IU4 matrix instruction. The build uses the release script
 against the private TheRock ROCm 7.15 SDK kept in the retired ling3-ciru
 venv. The model files (GGUF + FFN/GDN/GDN-Output .pfs, 26.05 GiB) live in
 `/home/dank/models/Kairic-Qwen3.8-27B-IU4-Edge/`. The production profile
-adds batch 4096 / ubatch 4096, `--no-mmap`, and reasoning on (deepseek
-format, preserve_thinking) on top of the pinned runner. Ubatch 4096 slows
-prefill ~25% versus ubatch 2048 with no decode change; see
-docs/kairic-edge.md before changing the batch profile.
+adds `--no-mmap` and reasoning on (deepseek format, preserve_thinking) on
+top of the pinned runner; batch 2048 / ubatch 512 are the runner's
+qualified sizes. Benchmarks: ubatch 512 prefill is 60-90% faster than
+ubatch 4096 with no decode change; see docs/kairic-edge.md before
+changing the batch profile.
 
 **Release gap — CK `config.h`:** the pinned CK commit ships only
 `config.h.in`; the release script and guide never generate