Fix ChatTTS load: pre-download via HF mirror, avoid GitHub timeout.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/download_chattts_models.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# 预下载 ChatTTS 模型到本地（走 HuggingFace 镜像，不依赖 GitHub）
+# 用法: bash scripts/download_chattts_models.sh
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+MODEL_DIR="${CHATTTS_MODEL_DIR:-${ROOT}/models/ChatTTS}"
+export MODEL_DIR
+VENV_PY="${ROOT}/venv/bin/python"
+
+export HF_ENDPOINT="${HF_ENDPOINT:-https://hf-mirror.com}"
+export HF_HUB_DOWNLOAD_TIMEOUT="${HF_HUB_DOWNLOAD_TIMEOUT:-600}"
+HF_HOME="${HF_HOME:-${ROOT}/models/hf_cache}"
+
+echo "[INFO] ChatTTS 模型目录: ${MODEL_DIR}"
+echo "[INFO] HF 镜像: ${HF_ENDPOINT}"
+mkdir -p "${MODEL_DIR}" "${HF_HOME}"
+
+if [[ ! -x "${VENV_PY}" ]]; then
+  echo "[ERROR] 未找到 venv，请先 bash deploy.sh deps"
+  exit 1
+fi
+
+"${VENV_PY}" -m pip install -q huggingface_hub
+
+"${VENV_PY}" << PY
+import os
+from pathlib import Path
+from huggingface_hub import snapshot_download
+
+target = Path(os.environ["MODEL_DIR"])
+target.mkdir(parents=True, exist_ok=True)
+
+print("[INFO] 正在从 HuggingFace 镜像下载 2Noise/ChatTTS（约 1-2GB）...")
+snapshot_download(
+    repo_id="2Noise/ChatTTS",
+    local_dir=str(target),
+    local_dir_use_symlinks=False,
+)
+print("[OK] 下载完成:", target)
+
+# 简单校验
+checks = [
+    target / "asset",
+    target / "config" / "path.yaml",
+]
+ok = any(p.exists() for p in checks)
+if not ok:
+    print("[WARN] 目录结构异常，请检查下载是否完整")
+else:
+    print("[OK] 模型目录结构校验通过")
+PY
+
+echo ""
+echo "[OK] 请执行: pm2 restart trading_studio"
+echo "     然后重新点击「锁定音色」"