Set 128K eager baseline and organize deployment documentation

compose.yaml

@@ -1,6 +1,7 @@
 name: qwen38-flash-dgx-spark
 services:
   vllm:
+    container_name: qwen38-flash-vllm
     image: local/qwen38-flash-spark:prefix-eager-0bfc7a15
     build:
       context: .
@@ -44,7 +45,7 @@ services:
         --tensor-parallel-size 1
         --dtype bfloat16 --kv-cache-dtype auto
         --gpu-memory-utilization ${GPU_MEMORY_UTILIZATION:-0.80}
-        --max-model-len 262144 --max-num-seqs ${MAX_NUM_SEQS:-4} --max-num-batched-tokens 2048
+        --max-model-len 131072 --max-num-seqs ${MAX_NUM_SEQS:-4} --max-num-batched-tokens 2048
         --enable-chunked-prefill --enable-prefix-caching
         --speculative-config '{"method":"mtp","num_speculative_tokens":2}'
         --enforce-eager --no-enable-flashinfer-autotune