#3130 ### Title: [SYCL / Arc Pro B70] `strata_bench.py` NameError (`port`) + native (non-Docker) `/work/` path handling on 2x Arc Pro B70 (55.3 tok/s)

Beschreibung

#### Hardware & Environment
- **GPUs:** 2× Intel Arc Pro B70 (32 GB each, `bmg-g31`, `xe` driver, `GPU 1` & `GPU 2`) + 1× Intel Arc Pro B50 (16 GB, `bmg-g21`, `GPU 0` left idle)
- **CPU / RAM:** Intel Xeon 6521P (24C/48T, AVX-512) + 384 GB DDR5 (single NUMA node)
- **Compiler / Toolchain:** Native host build with Intel oneAPI DPC++ `2026.2` (`icpx` + `oneMKL 2026.2`), `-DSTRATA_SYCL_AOT=bmg-g31`
- **Model / Config:** `unsloth/UD-IQ4_XS`, `--gpus 1,2`, `--layer-split auto`, `STRATA_STAGE_TRIM=1`, `--max-context 262144`, `--kv q4_0`, `--spec 4` (MTP)

---

#### 1. Bug: `NameError: name 'port' is not defined` in `tools/strata_bench.py`
At the end of `./setup.sh --setup --backend sycl ...`, answering `y` to *"Run a quick benchmark now?"* crashes immediately at line 990 of `tools/strata_bench.py`:
```text
Traceback (most recent call last):
  File "/mnt/models/Strata/tools/strata_bench.py", line 1037, in <module>
    sys.exit(main())
  File "/mnt/models/Strata/tools/strata_bench.py", line 990, in main
    say(f"Starting {cfg_path.name} on port {port} (loading takes 1-3 minutes; the PC may be slow meanwhile) ...")
NameError: name 'port' is not defined.

Fix: Use cfg.get("port", 8080) (or define port before line 990).