Single tilde `~` is being used as markdown strikethrough markup when it should be double-tilde `~~`

### Describe the bug

When AI agent is writing about approximates it uses a single tilde `~` e.g., ~2000. When it does a few approximations in one line it gets rendered as markdown strikethrough. However, according to my research (see sites like https://www.markdownguide.org/extended-syntax/#strikethrough) it should only do strikethrough if we bookend with double tilde `~~`.
Please fix the renderer so it requires double tilde and doesn't strikethrough random parts of output.

Additional note: it seems to only happen if the tildes are inside parentheses: "Make a fix (~2000 lines) and delete old file (~5000 lines)", rendering tilde outside the parentheses works fine. I think it's probably a regex bug or something.

### Affected version

1.0.2

### Steps to reproduce the behavior

1. Use this prompt: `I'm testing a bug with your markdown rendering, print this line exactly: "Make a fix (~2000 lines) and delete old file (~5000 lines)"
2. You can also have it test another line like "There are ~100 ways this bug might appear and ~5 ways to fix it ~10% of the time" and see that it renders fine

### Expected behavior

Make sure the markdown only does strikethrough when `~~` is used.

### Additional context

定位 Markdown 渲染器及其删除线解析逻辑，然后使用括号内外的单个波浪号重现报告中的字符串。确认单个波浪号仍保持为字面量，而双波浪号仍会生成删除线；如果渲染器有测试，则为这两种情况添加或更新覆盖率。

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