tools: default dash5 paths to home layout

tools/bench/pp_clean_bench.sh

@@ -9,8 +9,8 @@ set -u
 cd "$(dirname "$0")/../.."
 export PATH=$HOME/.cargo/bin:/usr/local/cuda-12.9/bin:$PATH
 export CUDA_HOME=${CUDA_HOME:-/usr/local/cuda-12.9}
-MODEL=${MODEL:-/opt/wjh/models/qwen3-8b}
-GGUF=${GGUF:-/opt/wjh/models/qwen3-8b/qwen3-8b-bf16.gguf}
+MODEL=${MODEL:-$HOME/models/qwen3-8b}
+GGUF=${GGUF:-$HOME/models/qwen3-8b/qwen3-8b-bf16.gguf}
 LLAMA_BIN=${LLAMA_BIN:-third_party/llama.cpp/build/bin/llama-server}
 XBIN=./target/release/xserv-server
 PPS=${PPS:-1 2 4}