Add Voice Bench: SFT package browser + model launch script

Self-contained browser tool for exploring the Vox Day / Nuttall SFT
packages and generating scenes against the joint CPT+SFT model, plus a
portable launch script (start-model.sh) and setup README for running
the model server on a fresh machine (DGX Spark or CUDA/L40 box).

start-model.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+# Starts the llama-server that voice-bench.html talks to.
+#
+# Requires:
+#   - llama.cpp built with CUDA support (see README.md)
+#   - the Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep2-Q8_0.gguf file (from the team
+#     Google Drive)
+#
+# Configure by setting environment variables before running, e.g.:
+#   MODEL_PATH=/data/models/Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep2-Q8_0.gguf \
+#   LLAMA_SERVER=/opt/llama.cpp/build/bin/llama-server \
+#   ./start-model.sh
+# or just edit the defaults below.
+set -e
+
+MODEL_PATH="${MODEL_PATH:-$HOME/models/Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep2-Q8_0.gguf}"
+LLAMA_SERVER="${LLAMA_SERVER:-$HOME/llama.cpp/build/bin/llama-server}"
+HOST="${HOST:-0.0.0.0}"
+PORT="${PORT:-8200}"
+CTX_SIZE="${CTX_SIZE:-32768}"
+
+if [ ! -f "$MODEL_PATH" ]; then
+  echo "!!! Model not found at: $MODEL_PATH"
+  echo "    Download it from the team Google Drive, then either place it at"
+  echo "    that path or re-run with MODEL_PATH=/path/to/the/file.gguf"
+  exit 1
+fi
+if [ ! -x "$LLAMA_SERVER" ]; then
+  echo "!!! llama-server not found/executable at: $LLAMA_SERVER"
+  echo "    Build llama.cpp first -- see README.md -- or re-run with"
+  echo "    LLAMA_SERVER=/path/to/llama-server"
+  exit 1
+fi
+
+echo "Model:  $MODEL_PATH"
+echo "Server: $LLAMA_SERVER"
+echo "Listening on ${HOST}:${PORT}, context ${CTX_SIZE}"
+echo "(if this exits with an out-of-memory error, re-run with a smaller CTX_SIZE, e.g. CTX_SIZE=8192)"
+echo
+
+exec "$LLAMA_SERVER" \
+  --model "$MODEL_PATH" \
+  --host "$HOST" \
+  --port "$PORT" \
+  -ngl 999 \
+  --ctx-size "$CTX_SIZE" \
+  --threads 8