Add local GPU preset voices with dropdown selection.

Generate ChatTTS sample_random_speaker presets without cloud APIs; choose clone or preset in synthesize UI.

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

scripts/generate_voice_presets.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+# 生成本地 GPU 预设音色（ChatTTS 内置说话人，无需 API）
+# 用法: bash scripts/generate_voice_presets.sh
+set -euo pipefail
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+VENV_PY="${ROOT}/venv/bin/python"
+
+if [[ ! -x "${VENV_PY}" ]]; then
+  echo "[ERROR] 未找到 venv，请先 bash deploy.sh deps"
+  exit 1
+fi
+
+echo "[INFO] 正在生成 ChatTTS 预设音色（本地 GPU）..."
+"${VENV_PY}" "${ROOT}/scripts/generate_voice_presets.py"
+echo "[OK] 预设音色已写入 ${ROOT}/voices/presets/"
+echo "[OK] 在 Web UI「配音合成」处可从下拉框选择"