aries: 第2步 旁白文案+男声配音+词级对齐字幕时间轴

.gitattributes

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aries/README.md

@@ -14,7 +14,7 @@
 | # | 阶段 | 状态 |
 |---|---|---|
 | 1 | 计划 / 大纲 / 步骤（本文件） | ✅ 完成 |
-| 2 | 旁白文案定稿 + 男声 TTS（热血少年音）+ 时间轴 | ⏳ |
+| 2 | 旁白文案定稿（10 幕）+ 男声 TTS（云希）+ 词级对齐字幕（73 条）+ 时间轴（总长 3:33） | ✅ 完成 |
 | 3 | 渲染引擎：WebGL2 火焰星云着色器 + Canvas2D 矢量层 + 10 个场景（横/竖屏） | ⏳ |
 | 4 | 荣耀铭牌系统：动态金属质感铭牌 + 个性化署名 + 单独导出 PNG | ⏳ |
 | 5 | 史诗配乐（太鼓 + 弦乐 + 铜管号角）+ 音效，离线渲染 | ⏳ |
@@ -60,3 +60,20 @@
 6. `src/export.js` 导出（24/30/60）→ 实测 → 推送。
 7. `src/publish.js` 文案 + 封面 → 推送。
 8. 首页卡片、根 README、全片扫描 → 最终推送。
+
+## 4. 旁白全文（第 2 步产出）
+
+| 幕 | 时间 | 旁白 |
+|---|---|---|
+| 1 序章 | 0:00 | 每年三月下旬，寒冬刚刚退场，春天的第一缕阳光照向大地。夜空里，一只金色的公羊，正低下犄角，准备冲锋。它就是黄道十二星座的第一位，白羊座。三月二十一日到四月十九日出生的朋友，都属于它。 |
+| 2 为什么排第一 | 0:23 | 为什么白羊座排在第一位？因为它和春天有关。两千多年前，每到春分，昼夜等长、万物复苏，太阳恰好走进白羊座。于是，一年的星空之旅，就从白羊开始。直到今天，天文学家仍把春分点叫作“白羊座第一点”，还用白羊座的符号来标记它。 |
+| 3 找到它 | 0:48 | 在双鱼座和金牛座之间，三颗亮星连成一道弯弯的弧线，就像公羊卷曲的犄角……这片星空属于二十八宿中的娄宿和胃宿。 |
+| 4 星星的名字 | 1:09 | 哈马尔（阿拉伯语“羊”），橙色巨星，约 66 光年；娄宿二是双星，1664 年胡克发现，是最早用望远镜发现的双星之一。 |
+| 5 金羊毛 · 飞越大海 | 1:31 | 佛里克索斯与赫勒被继母迫害，母亲送来金色公羊；赫勒坠海，海峡得名赫勒斯滂。 |
+| 6 金羊毛 · 升上星空 | 1:54 | 科尔基斯、圣林、巨龙、伊阿宋与阿尔戈英雄；公羊被宙斯升上夜空。 |
+| 7 ♈ 的秘密 | 2:14 | 羊角 = 勇往直前；嫩芽 = 新的开始。 |
+| 8 火象 · 火星 | 2:32 | 热情、勇敢、直率、行动派、从不记仇，像春天的第一声惊雷。 |
+| 9 荣耀铭牌 | 2:55 | 如果你是白羊座，这枚铭牌属于你……白羊座，先锋之证。 |
+| 10 尾声 | 3:13 | 每一年，春天都从白羊座出发……愿你的每一次出发，都被星光照亮。 |
+
+字幕：TTS 词级时间戳回贴原文，按标点切成短句，过短的短句在句中并入前句、在句首并入后句。

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aries/src/timeline.js

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+// 由 tools/build_voice.py 自动生成
+export const TIMELINE = {
+ "length": 213.44,
+ "acts": [
+  {
+   "id": "dawn",
+   "title": "序章 · 第一缕春光",
+   "tone": "ember",
+   "t0": 0.0,
+   "t1": 23.35,
+   "vo": {
+    "src": "audio/vo-01.mp3",
+    "at": 3.0,
+    "len": 19.15
+   },
+   "lines": [
+    {
+     "a": 3.099,
+     "b": 4.717,
+     "s": "每年三月下旬"
+    },
+    {
+     "a": 4.717,
+     "b": 6.187,
+     "s": "寒冬刚刚退场"
+    },
+    {
+     "a": 6.187,
+     "b": 8.283,
+     "s": "春天的第一缕阳光照向大地"
+    },
+    {
+     "a": 8.833,
+     "b": 11.395,
+     "s": "夜空里，一只金色的公羊"
+    },
+    {
+     "a": 11.395,
+     "b": 13.478,
+     "s": "正低下犄角，准备冲锋"
+    },
+    {
+     "a": 14.042,
+     "b": 16.909,
+     "s": "它就是黄道十二星座的第一位，白羊座"
+    },
+    {
+     "a": 17.473,
+     "b": 21.297,
+     "s": "三月二十一日到四月十九日出生的朋友，都属于它"
+    }
+   ],
+   "text": "每年三月下旬，寒冬刚刚退场，春天的第一缕阳光照向大地。夜空里，一只金色的公羊，正低下犄角，准备冲锋。它就是黄道十二星座的第一位，白羊座。三月二十一日到四月十九日出生的朋友，都属于它。"
+  },
+  {
+   "id": "first",
+   "title": "为什么排第一",
+   "tone": "dawn",
+   "t0": 23.35,
+   "t1": 48.21,
+   "vo": {
+    "src": "audio/vo-02.mp3",
+    "at": 24.35,
+    "len": 22.66
+   },
+   "lines": [
+    {
+     "a": 24.449,
+     "b": 26.299,
+     "s": "为什么白羊座排在第一位？"
+    },
+    {
+     "a": 26.85,
+     "b": 28.186,
+     "s": "因为它和春天有关"
+    },
+    {
+     "a": 28.749,
+     "b": 31.09,
+     "s": "两千多年前，每到春分"
+    },
+    {
+     "a": 31.09,
+     "b": 33.149,
+     "s": "昼夜等长、万物复苏"
+    },
+    {
+     "a": 33.529,
+     "b": 35.098,
+     "s": "太阳恰好走进白羊座"
+    },
+    {
+     "a": 35.649,
+     "b": 38.063,
+     "s": "于是，一年的星空之旅"
+    },
+    {
+     "a": 38.063,
+     "b": 39.166,
+     "s": "就从白羊开始"
+    },
+    {
+     "a": 39.73,
+     "b": 43.897,
+     "s": "直到今天，天文学家仍把春分点叫作“白羊座第一点”"
+    },
+    {
+     "a": 44.252,
+     "b": 46.164,
+     "s": "还用白羊座的符号来标记它"
+    }
+   ],
+   "text": "为什么白羊座排在第一位？因为它和春天有关。两千多年前，每到春分，昼夜等长、万物复苏，太阳恰好走进白羊座。于是，一年的星空之旅，就从白羊开始。直到今天，天文学家仍把春分点叫作“白羊座第一点”，还用白羊座的符号来标记它。"
+  },
+  {
+   "id": "find",
+   "title": "找到它",
+   "tone": "night",
+   "t0": 48.21,
+   "t1": 68.94,
+   "vo": {
+    "src": "audio/vo-03.mp3",
+    "at": 49.21,
+    "len": 18.53
+   },
+   "lines": [
+    {
+     "a": 49.309,
+     "b": 51.307,
+     "s": "在夜空中找到它并不难"
+    },
+    {
+     "a": 51.857,
+     "b": 54.026,
+     "s": "在双鱼座和金牛座之间"
+    },
+    {
+     "a": 54.026,
+     "b": 56.551,
+     "s": "三颗亮星连成一道弯弯的弧线"
+    },
+    {
+     "a": 56.551,
+     "b": 58.07,
+     "s": "就像公羊卷曲的犄角"
+    },
+    {
+     "a": 58.634,
+     "b": 61.453,
+     "s": "不远处，就是闪闪发光的昴星团"
+    },
+    {
+     "a": 62.016,
+     "b": 63.401,
+     "s": "在中国古代"
+    },
+    {
+     "a": 63.401,
+     "b": 66.882,
+     "s": "这片星空属于二十八宿中的娄宿和胃宿"
+    }
+   ],
+   "text": "在夜空中找到它并不难。在双鱼座和金牛座之间，三颗亮星连成一道弯弯的弧线，就像公羊卷曲的犄角。不远处，就是闪闪发光的昴星团。在中国古代，这片星空属于二十八宿中的娄宿和胃宿。"
+  },
+  {
+   "id": "names",
+   "title": "星星的名字",
+   "tone": "night",
+   "t0": 68.94,
+   "t1": 91.47,
+   "vo": {
+    "src": "audio/vo-04.mp3",
+    "at": 69.94,
+    "len": 20.33
+   },
+   "lines": [
+    {
+     "a": 70.039,
+     "b": 71.804,
+     "s": "最亮的那颗叫哈马尔"
+    },
+    {
+     "a": 71.804,
+     "b": 72.992,
+     "s": "在阿拉伯语里"
+    },
+    {
+     "a": 72.992,
+     "b": 73.826,
+     "s": "就是“羊”的意思"
+    },
+    {
+     "a": 74.389,
+     "b": 75.933,
+     "s": "它是一颗橙色巨星"
+    },
+    {
+     "a": 76.3,
+     "b": 78.396,
+     "s": "距离我们大约六十六光年"
+    },
+    {
+     "a": 78.96,
+     "b": 80.197,
+     "s": "旁边的娄宿二"
+    },
+    {
+     "a": 80.197,
+     "b": 81.3,
+     "s": "用望远镜一看"
+    },
+    {
+     "a": 81.717,
+     "b": 82.795,
+     "s": "竟然是两颗星"
+    },
+    {
+     "a": 83.347,
+     "b": 84.266,
+     "s": "一六六四年"
+    },
+    {
+     "a": 84.621,
+     "b": 86.374,
+     "s": "英国科学家胡克发现了它"
+    },
+    {
+     "a": 86.729,
+     "b": 89.401,
+     "s": "这是人类最早用望远镜发现的双星之一"
+    }
+   ],
+   "text": "最亮的那颗叫哈马尔，在阿拉伯语里，就是“羊”的意思。它是一颗橙色巨星，距离我们大约六十六光年。旁边的娄宿二，用望远镜一看，竟然是两颗星。一六六四年，英国科学家胡克发现了它，这是人类最早用望远镜发现的双星之一。"
+  },
+  {
+   "id": "fleece1",
+   "title": "金羊毛 · 飞越大海",
+   "tone": "sea",
+   "t0": 91.47,
+   "t1": 113.93,
+   "vo": {
+    "src": "audio/vo-05.mp3",
+    "at": 92.47,
+    "len": 20.26
+   },
+   "lines": [
+    {
+     "a": 92.569,
+     "b": 93.807,
+     "s": "白羊座的故事"
+    },
+    {
+     "a": 93.807,
+     "b": 95.559,
+     "s": "来自古希腊的金羊毛传说"
+    },
+    {
+     "a": 96.122,
+     "b": 97.58,
+     "s": "一对王子和公主"
+    },
+    {
+     "a": 97.58,
+     "b": 98.793,
+     "s": "遭到继母的迫害"
+    },
+    {
+     "a": 99.357,
+     "b": 103.769,
+     "s": "危急时刻，他们的母亲送来一只长着金色羊毛的公羊"
+    },
+    {
+     "a": 103.769,
+     "b": 105.583,
+     "s": "驮着兄妹俩飞向天空"
+    },
+    {
+     "a": 106.146,
+     "b": 107.507,
+     "s": "飞越大海时"
+    },
+    {
+     "a": 107.507,
+     "b": 110.399,
+     "s": "妹妹赫勒不慎跌落，那片海峡"
+    },
+    {
+     "a": 110.399,
+     "b": 111.882,
+     "s": "从此被叫作赫勒斯滂"
+    }
+   ],
+   "text": "白羊座的故事，来自古希腊的金羊毛传说。一对王子和公主，遭到继母的迫害。危急时刻，他们的母亲送来一只长着金色羊毛的公羊，驮着兄妹俩飞向天空。飞越大海时，妹妹赫勒不慎跌落，那片海峡，从此被叫作赫勒斯滂。"
+  },
+  {
+   "id": "fleece2",
+   "title": "金羊毛 · 升上星空",
+   "tone": "grove",
+   "t0": 113.93,
+   "t1": 133.55,
+   "vo": {
+    "src": "audio/vo-06.mp3",
+    "at": 114.93,
+    "len": 17.42
+   },
+   "lines": [
+    {
+     "a": 115.029,
+     "b": 118.399,
+     "s": "哥哥佛里克索斯平安抵达了远方的科尔基斯"
+    },
+    {
+     "a": 118.962,
+     "b": 120.959,
+     "s": "金羊毛被挂在圣林之中"
+    },
+    {
+     "a": 120.959,
+     "b": 123.178,
+     "s": "由一条永不入睡的巨龙守护"
+    },
+    {
+     "a": 123.178,
+     "b": 126.437,
+     "s": "后来引出了伊阿宋和阿尔戈英雄们的传奇远航"
+    },
+    {
+     "a": 127.001,
+     "b": 128.986,
+     "s": "而那只勇敢的金色公羊"
+    },
+    {
+     "a": 128.986,
+     "b": 130.481,
+     "s": "被宙斯升上夜空"
+    },
+    {
+     "a": 130.481,
+     "b": 131.499,
+     "s": "化作了白羊座"
+    }
+   ],
+   "text": "哥哥佛里克索斯平安抵达了远方的科尔基斯。金羊毛被挂在圣林之中，由一条永不入睡的巨龙守护，后来引出了伊阿宋和阿尔戈英雄们的传奇远航。而那只勇敢的金色公羊，被宙斯升上夜空，化作了白羊座。"
+  },
+  {
+   "id": "glyph",
+   "title": "♈ 的秘密",
+   "tone": "dawn",
+   "t0": 133.55,
+   "t1": 151.78,
+   "vo": {
+    "src": "audio/vo-07.mp3",
+    "at": 134.55,
+    "len": 16.03
+   },
+   "lines": [
+    {
+     "a": 134.649,
+     "b": 135.973,
+     "s": "白羊座的符号"
+    },
+    {
+     "a": 135.973,
+     "b": 138.252,
+     "s": "像一对向两边卷开的羊角"
+    },
+    {
+     "a": 138.252,
+     "b": 141.12,
+     "s": "也有人说，它像一株刚刚破土的嫩芽"
+    },
+    {
+     "a": 141.682,
+     "b": 144.256,
+     "s": "羊角，代表勇往直前"
+    },
+    {
+     "a": 144.256,
+     "b": 146.229,
+     "s": "嫩芽，代表新的开始"
+    },
+    {
+     "a": 146.793,
+     "b": 148.521,
+     "s": "这正是春天的样子"
+    },
+    {
+     "a": 148.521,
+     "b": 149.722,
+     "s": "也是白羊座的样子"
+    }
+   ],
+   "text": "白羊座的符号，像一对向两边卷开的羊角；也有人说，它像一株刚刚破土的嫩芽。羊角，代表勇往直前；嫩芽，代表新的开始。这正是春天的样子，也是白羊座的样子。"
+  },
+  {
+   "id": "fire",
+   "title": "火象 · 火星",
+   "tone": "ember",
+   "t0": 151.78,
+   "t1": 174.98,
+   "vo": {
+    "src": "audio/vo-08.mp3",
+    "at": 152.78,
+    "len": 21.0
+   },
+   "lines": [
+    {
+     "a": 152.879,
+     "b": 154.337,
+     "s": "在占星文化里"
+    },
+    {
+     "a": 154.337,
+     "b": 156.053,
+     "s": "白羊座是火象星座"
+    },
+    {
+     "a": 156.053,
+     "b": 157.34,
+     "s": "守护星是火星"
+    },
+    {
+     "a": 157.903,
+     "b": 161.665,
+     "s": "人们说，白羊座热情、勇敢、直率"
+    },
+    {
+     "a": 162.081,
+     "b": 163.209,
+     "s": "想到就去做"
+    },
+    {
+     "a": 163.209,
+     "b": 164.643,
+     "s": "总是第一个冲上前去"
+    },
+    {
+     "a": 165.206,
+     "b": 166.591,
+     "s": "偶尔有点急性子"
+    },
+    {
+     "a": 166.591,
+     "b": 169.263,
+     "s": "却来得快、去得也快，从不记仇"
+    },
+    {
+     "a": 169.827,
+     "b": 171.702,
+     "s": "就像春天的第一声惊雷"
+    },
+    {
+     "a": 171.702,
+     "b": 172.927,
+     "s": "把身边的人都唤醒"
+    }
+   ],
+   "text": "在占星文化里，白羊座是火象星座，守护星是火星。人们说，白羊座热情、勇敢、直率，想到就去做，总是第一个冲上前去。偶尔有点急性子，却来得快、去得也快，从不记仇。就像春天的第一声惊雷，把身边的人都唤醒。"
+  },
+  {
+   "id": "badge",
+   "title": "荣耀铭牌",
+   "tone": "royal",
+   "t0": 174.98,
+   "t1": 193.36,
+   "vo": {
+    "src": "audio/vo-09.mp3",
+    "at": 176.18,
+    "len": 15.98
+   },
+   "lines": [
+    {
+     "a": 176.279,
+     "b": 180.274,
+     "s": "所以，如果你是白羊座，这枚铭牌，属于你"
+    },
+    {
+     "a": 180.812,
+     "b": 183.41,
+     "s": "它刻着你的星座、你的守护星"
+    },
+    {
+     "a": 183.41,
+     "b": 184.979,
+     "s": "和你与生俱来的那份勇气"
+    },
+    {
+     "a": 185.543,
+     "b": 187.602,
+     "s": "白羊座，先锋之证"
+    },
+    {
+     "a": 188.153,
+     "b": 189.268,
+     "s": "愿你永远保有"
+    },
+    {
+     "a": 189.685,
+     "b": 191.315,
+     "s": "第一次出发时的那份热血"
+    }
+   ],
+   "text": "所以，如果你是白羊座，这枚铭牌，属于你。它刻着你的星座、你的守护星，和你与生俱来的那份勇气。白羊座，先锋之证。愿你永远保有，第一次出发时的那份热血。"
+  },
+  {
+   "id": "onward",
+   "title": "尾声 · 出发",
+   "tone": "dawn",
+   "t0": 193.36,
+   "t1": 213.44,
+   "vo": {
+    "src": "audio/vo-10.mp3",
+    "at": 194.36,
+    "len": 13.08
+   },
+   "lines": [
+    {
+     "a": 194.459,
+     "b": 196.996,
+     "s": "每一年，春天都从白羊座出发"
+    },
+    {
+     "a": 197.559,
+     "b": 198.931,
+     "s": "下一次春夜抬头"
+    },
+    {
+     "a": 199.286,
+     "b": 202.105,
+     "s": "记得向那只金色的公羊，打个招呼"
+    },
+    {
+     "a": 202.669,
+     "b": 203.588,
+     "s": "白羊座的你"
+    },
+    {
+     "a": 203.992,
+     "b": 205.5,
+     "s": "愿你的每一次出发"
+    },
+    {
+     "a": 205.5,
+     "b": 206.566,
+     "s": "都被星光照亮"
+    }
+   ],
+   "text": "每一年，春天都从白羊座出发。下一次春夜抬头，记得向那只金色的公羊，打个招呼。白羊座的你，愿你的每一次出发，都被星光照亮。"
+  }
+ ]
+};

aries/tools/build_voice.py

@@ -0,0 +1,101 @@
+"""白羊座旁白构建：逐幕 TTS（词级时间戳）→ 按标点切成短字幕 → src/timeline.js
+依赖：pip install edge-tts imageio-ffmpeg"""
+import asyncio, json, os, re, subprocess
+import edge_tts, imageio_ffmpeg
+
+HERE = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+VOICE, RATE, PITCH = "zh-CN-YunxiNeural", "+2%", "+0Hz"
+
+ACTS = [
+  # id, 标题, 主色调, 旁白前留白(s), 文案
+  ("dawn", "序章 · 第一缕春光", "ember", 3.0,
+   "每年三月下旬，寒冬刚刚退场，春天的第一缕阳光照向大地。夜空里，一只金色的公羊，正低下犄角，准备冲锋。它就是黄道十二星座的第一位，白羊座。三月二十一日到四月十九日出生的朋友，都属于它。"),
+  ("first", "为什么排第一", "dawn", 1.0,
+   "为什么白羊座排在第一位？因为它和春天有关。两千多年前，每到春分，昼夜等长、万物复苏，太阳恰好走进白羊座。于是，一年的星空之旅，就从白羊开始。直到今天，天文学家仍把春分点叫作“白羊座第一点”，还用白羊座的符号来标记它。"),
+  ("find", "找到它", "night", 1.0,
+   "在夜空中找到它并不难。在双鱼座和金牛座之间，三颗亮星连成一道弯弯的弧线，就像公羊卷曲的犄角。不远处，就是闪闪发光的昴星团。在中国古代，这片星空属于二十八宿中的娄宿和胃宿。"),
+  ("names", "星星的名字", "night", 1.0,
+   "最亮的那颗叫哈马尔，在阿拉伯语里，就是“羊”的意思。它是一颗橙色巨星，距离我们大约六十六光年。旁边的娄宿二，用望远镜一看，竟然是两颗星。一六六四年，英国科学家胡克发现了它，这是人类最早用望远镜发现的双星之一。"),
+  ("fleece1", "金羊毛 · 飞越大海", "sea", 1.0,
+   "白羊座的故事，来自古希腊的金羊毛传说。一对王子和公主，遭到继母的迫害。危急时刻，他们的母亲送来一只长着金色羊毛的公羊，驮着兄妹俩飞向天空。飞越大海时，妹妹赫勒不慎跌落，那片海峡，从此被叫作赫勒斯滂。"),
+  ("fleece2", "金羊毛 · 升上星空", "grove", 1.0,
+   "哥哥佛里克索斯平安抵达了远方的科尔基斯。金羊毛被挂在圣林之中，由一条永不入睡的巨龙守护，后来引出了伊阿宋和阿尔戈英雄们的传奇远航。而那只勇敢的金色公羊，被宙斯升上夜空，化作了白羊座。"),
+  ("glyph", "♈ 的秘密", "dawn", 1.0,
+   "白羊座的符号，像一对向两边卷开的羊角；也有人说，它像一株刚刚破土的嫩芽。羊角，代表勇往直前；嫩芽，代表新的开始。这正是春天的样子，也是白羊座的样子。"),
+  ("fire", "火象 · 火星", "ember", 1.0,
+   "在占星文化里，白羊座是火象星座，守护星是火星。人们说，白羊座热情、勇敢、直率，想到就去做，总是第一个冲上前去。偶尔有点急性子，却来得快、去得也快，从不记仇。就像春天的第一声惊雷，把身边的人都唤醒。"),
+  ("badge", "荣耀铭牌", "royal", 1.2,
+   "所以，如果你是白羊座，这枚铭牌，属于你。它刻着你的星座、你的守护星，和你与生俱来的那份勇气。白羊座，先锋之证。愿你永远保有，第一次出发时的那份热血。"),
+  ("onward", "尾声 · 出发", "dawn", 1.0,
+   "每一年，春天都从白羊座出发。下一次春夜抬头，记得向那只金色的公羊，打个招呼。白羊座的你，愿你的每一次出发，都被星光照亮。"),
+]
+GAP_AFTER = 1.2
+OUTRO = 6.0
+FFMPEG = imageio_ffmpeg.get_ffmpeg_exe()
+PUNCT = "，。、：；？！“”…"
+
+def media_len(p):
+    err = subprocess.run([FFMPEG, "-i", p], capture_output=True, text=True).stderr
+    h, m, s = re.search(r"Duration: (\d+):(\d+):([\d.]+)", err).groups()
+    return int(h) * 3600 + int(m) * 60 + float(s)
+
+def clauses(text, words, t0):
+    """把词级时间戳对齐回原文，按标点切成短句字幕。"""
+    pos, spans = 0, []
+    for off, dur, w in words:
+        i = text.find(w, pos)
+        if i < 0: continue
+        spans.append((i, i + len(w), off, off + dur)); pos = i + len(w)
+    out, start = [], 0
+    cuts = [m.end() for m in re.finditer(r"[，。：；？！]", text)] + [len(text)]
+    pieces = []
+    for c in cuts:
+        seg = text[start:c]
+        if seg.strip(PUNCT + " "): pieces.append((start, c))
+        start = c
+    merged, carry = [], None
+    END = "。？！；"
+    for k, (a, b) in enumerate(pieces):  # 太短的短句：句中则并入前一句，句首则并入后一句
+        if carry is not None: a, carry = carry, None
+        short = len(text[a:b].strip(PUNCT)) < 5
+        prev_open = merged and text[merged[-1][1] - 1] not in END
+        if short and prev_open: merged[-1] = (merged[-1][0], b)
+        elif short and k < len(pieces) - 1 and text[b - 1] not in END: carry = a
+        else: merged.append((a, b))
+    for a, b in merged:
+        ws = [s for s in spans if s[0] >= a and s[1] <= b]
+        if not ws: continue
+        out.append({"a": round(t0 + ws[0][2], 3), "b": round(t0 + ws[-1][3], 3),
+                    "s": text[a:b].strip().rstrip("，。：；、")})
+    for i in range(len(out) - 1):  # 字幕连续不闪烁
+        if out[i + 1]["a"] - out[i]["b"] < .35: out[i]["b"] = out[i + 1]["a"]
+    return out
+
+async def synth(text, path):
+    words = []
+    com = edge_tts.Communicate(text, VOICE, rate=RATE, pitch=PITCH, boundary="WordBoundary")
+    with open(path, "wb") as f:
+        async for ch in com.stream():
+            if ch["type"] == "audio": f.write(ch["data"])
+            elif ch["type"] == "WordBoundary": words.append((ch["offset"] / 1e7, ch["duration"] / 1e7, ch["text"]))
+    return words
+
+async def main():
+    acts, clock = [], 0.0
+    for n, (aid, title, tone, lead, text) in enumerate(ACTS):
+        path = os.path.join(HERE, "audio", f"vo-{n + 1:02d}.mp3")
+        words = await synth(text, path)
+        d = media_len(path)
+        vo_at = clock + lead
+        end = vo_at + d + (OUTRO if n == len(ACTS) - 1 else GAP_AFTER)
+        acts.append({"id": aid, "title": title, "tone": tone, "t0": round(clock, 3), "t1": round(end, 3),
+                     "vo": {"src": f"audio/vo-{n + 1:02d}.mp3", "at": round(vo_at, 3), "len": round(d, 3)},
+                     "lines": clauses(text, words, vo_at), "text": text})
+        print(f"{n + 1:2d} {aid:8s} {clock:7.2f}–{end:7.2f}  voice {d:5.2f}s  lines {len(acts[-1]['lines'])}")
+        clock = end
+    with open(os.path.join(HERE, "src", "timeline.js"), "w", encoding="utf-8") as f:
+        f.write("// 由 tools/build_voice.py 自动生成\nexport const TIMELINE = " +
+                json.dumps({"length": round(clock, 3), "acts": acts}, ensure_ascii=False, indent=1) + ";\n")
+    print("total", round(clock, 2))
+
+asyncio.run(main())