refactor(preview): remove juice/Node.js, simplify to pure Go dev server with SSE

- Delete tools/server/ (Node.js, juice, inliner.mjs, server.mjs, node_modules)
- Create tools/preview/server.go — pure Go dev server with SSE + file polling
- Rewrite tools/cli/dev.go — start Go server in-process, no Node.js required
- Simplify preview/index.html — View dropdown (Modern/Source), remove Client
  Simulation panel, remove Gmail/Outlook logic, WebSocket → SSE
- Update all 14 documentation files (README, CONTRIBUTING, AGENTS + translations)
  to reflect pure Go dev server and simplified preview

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
KenanZhuandClaude committed 2026-06-23 09:48:04 +08:00
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@@ -62,26 +62,17 @@ cd tools && go run . preview all
```
然后打开 `preview/index.html`。
> [!WARNING]
> 静态模式下 Gmail/Outlook 模拟仅供参考,使用 dev 模式可获得相对准确的 CSS 内联渲染。
**开发服务器(实时重载 + Juice CSS 内联 + Gmail/Outlook 模拟):**
**开发服务器(实时重载):**
```bash
cd tools && go run . dev # 需要 Node.js
cd tools && go run . dev
# → http://localhost:3456
```
> [!NOTE]
> Dev 模拟无法 100% 还原各个邮件客户端的渲染差异,仅供参考,请以实际效果为准。
| 功能 | 静态 | Dev |
|-----------|--------|-----|
| Go 模板渲染 | ✅ | ✅ |
| 主题/模板切换 | ✅ | ✅ |
| Juice CSS 内联 | — | ✅ |
| Gmail/Outlook CSS 剥离 | — | ✅ |
| 实时重载 | — | ✅ |
| 需要 Node.js | — | ✅ |
---