Reorganize: llm/old -> old (retired PP/NPU-era scripts, reference only)

old/scripts/frank-pp-worker.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=llama.cpp Qwen3.8-27B pipeline-parallel RPC worker (RTX 3090)
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=dank
+Group=dank
+ExecStart=/home/dank/vLLM/scripts/serve-pp-worker.sh
+Restart=on-failure
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target