large: Kairic chat profile — reasoning on/deepseek, batch 4096/2048, preserve_thinking

Local overrides to the pinned runner for production chat:
  - --reasoning on --reasoning-format deepseek (thinking to
    message.reasoning_content, matching the retired v3 service so the
    fleet's reasoning clients work)
  - --reasoning-budget -1 (unrestricted thinking)
  - --chat-template-kwargs '{"preserve_thinking":"true"}' (preserve
    thinking tokens in the conversation history across turns)
  - batch 4096 / ubatch 2048 (larger than the runner's 2048/512; unified
    memory has headroom)

The Kairic IU4 lane (--kairic-edge) and the MTP draft fast path are
unaffected.

scripts/serve-frank-large.sh

@@ -47,8 +47,8 @@ fi
 : "${LISTEN_PORT:=52625}"
 : "${CTX_SIZE:=262144}"
 : "${PARALLEL:=1}"
-: "${BATCH_SIZE:=2048}"
-: "${UBATCH_SIZE:=512}"
+: "${BATCH_SIZE:=4096}"
+: "${UBATCH_SIZE:=2048}"
 : "${TARGET_THREADS:=16}"
 : "${BATCH_THREADS:=32}"
 : "${CACHE_TYPE_K:=f16}"
@@ -122,10 +122,15 @@ export PROMPTFORGE_ENABLE_SMALLM_GDN_OUTPUT_IU4=0
 export PROMPTFORGE_ENABLE_IU4_DECODE_M2_M5=0
 export PROMPTFORGE_OUTPUT_K8_STRICT_GREEDY=0
 
-# Pinned runner flags, verbatim (qualified 262K one-slot profile, native
-# MTP depth 4, deterministic sampler, reasoning off). Sampling is
-# overridden per request by clients; the card recommends Qwen live values
-# (temp 0.7, top-p 0.8, top-k 20, min-p 0, presence_penalty 1.5).
+# Pinned runner flags (qualified 262K one-slot profile, native MTP depth
+# 4, deterministic sampler). Local overrides for production chat:
+#   - reasoning on + deepseek format (thinking goes to message.reasoning_content,
+#     matching the retired v3 service so the fleet's reasoning clients work)
+#   - batch 4096 / ubatch 2048 (larger than the runner's 2048/512)
+#   - chat_template_kwargs preserve_thinking=true (preserve thinking tokens
+#     in the conversation history across turns)
+# Sampling is overridden per request by clients; the card recommends Qwen
+# live values (temp 0.7, top-p 0.8, top-k 20, min-p 0, presence_penalty 1.5).
 exec "$LLAMA_BIN" \
     -m "$MODEL" \
     --alias "$ALIAS" \
@@ -163,6 +168,7 @@ exec "$LLAMA_BIN" \
     --top-p 1.0 \
     --top-k 0 \
     --min-p 0.0 \
-    --reasoning off \
-    --reasoning-format none \
-    --reasoning-budget -1
+    --reasoning on \
+    --reasoning-format deepseek \
+    --reasoning-budget -1 \
+    --chat-template-kwargs '{"preserve_thinking":"true"}'