ling: batch 8192 (ubatch 3072); add -lv verbosity + log file for stop-investigation

scripts/frank-default-large.ling.env

@@ -32,8 +32,13 @@ DEVICE=Vulkan0
 N_GPU_LAYERS=all
 FLASH_ATTN=auto
 # Batch kept small-leaning for the tight memory budget; tune with CTX_SIZE.
-BATCH_SIZE=3072
+BATCH_SIZE=8192
 UBATCH_SIZE=3072
+
+# Diagnostics: high verbosity + a dedicated log file for investigating the
+# premature 'stop' reports. -lv 4 = verbose (ggml); 5 = debug.
+VERBOSITY=4
+LOG_FILE=/tmp/frank-ling.log
 # Sampling defaults (model card: reasoning-capable; leave temp/top to default)
 TEMPERATURE=1.0
 TOP_K=20