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feat: sync message translation support

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A 2026-07-12 14:20:26 +08:00
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7
docs/configuration.en.md
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@ -126,6 +126,13 @@ This document describes every setting loaded by `internal/config`. Defaults and
| `TELESRV_AI_RATE_LIMIT` | int / `20` | Per-account compose operations per window. |
| `TELESRV_AI_RATE_WINDOW` | duration / `1m` | Compose AI rate-limit window. |
| `TELESRV_AI_LOG_CONTENT` | bool / `false` | When false, logs contain lengths/provider/status only. Enabling may expose user prompts and generated text. |
| `TELESRV_TRANSLATION_ENABLED` | bool / `true` | Enables `messages.translateText`; at least one remote AI provider is still required, and the local echo provider is never treated as translation. |
| `TELESRV_TRANSLATION_PROVIDERS` | list / empty | Selects provider names from `TELESRV_AI_PROVIDERS`; empty uses every configured remote provider. |
| `TELESRV_TRANSLATION_TIMEOUT` | duration / `15s` | Total timeout for one batch; batches contain at most 20 texts and use fixed provider concurrency of 4. |
| `TELESRV_TRANSLATION_RATE_LIMIT` | int / `60` | Per-account translated text items per window; a 20-item batch costs 20 to prevent provider-call amplification. |
| `TELESRV_TRANSLATION_RATE_WINDOW` | duration / `1m` | Translation rate-limit window. |
Chat translation sends message bodies explicitly selected by the user to the configured external provider. Default logs omit content, but deployments should still disclose the upstream processor in their privacy policy. With only `local` configured, telesrv returns `TRANSLATIONS_DISABLED` instead of presenting source text as a translation.
For each name in `TELESRV_AI_PROVIDERS`, telesrv uppercases it, converts non-alphanumeric characters to `_`, and reads the following dynamic keys. Example: provider `openai-compatible` uses suffix `OPENAI_COMPATIBLE`.

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docs/configuration.zh-CN.md
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@ -126,6 +126,13 @@
| `TELESRV_AI_RATE_LIMIT` | int / `20` | 单账号每窗口 compose 次数。 |
| `TELESRV_AI_RATE_WINDOW` | duration / `1m` | compose AI 限流窗口。 |
| `TELESRV_AI_LOG_CONTENT` | bool / `false` | false 时日志只写长度/provider/状态；开启可能暴露用户输入和生成文本。 |
| `TELESRV_TRANSLATION_ENABLED` | bool / `true` | 启用 `messages.translateText`；仍需至少一个远程 AI provider，local 回显 provider 不会被用作翻译。 |
| `TELESRV_TRANSLATION_PROVIDERS` | list / 空 | 从 `TELESRV_AI_PROVIDERS` 选择用于翻译的 provider 名；空表示使用其中全部远程 provider。 |
| `TELESRV_TRANSLATION_TIMEOUT` | duration / `15s` | 一批翻译的总超时；批内最多 20 条、provider 并发固定为 4。 |
| `TELESRV_TRANSLATION_RATE_LIMIT` | int / `60` | 单账号每窗口允许的翻译文本条数；一批 20 条计 20，防止批量请求放大 provider 调用。 |
| `TELESRV_TRANSLATION_RATE_WINDOW` | duration / `1m` | 翻译限流窗口。 |
聊天翻译会把用户主动选择翻译的消息正文发送给所配置的外部 provider。默认日志不记录正文，但部署者仍应在隐私政策中披露上游处理方；只配置 `local` 时服务端返回 `TRANSLATIONS_DISABLED`，不会回原文冒充译文。
对 `TELESRV_AI_PROVIDERS` 中的每个名称，telesrv 会转大写并把非字母数字字符替换为 `_`，再读取下列动态参数。例如 `openai-compatible` 对应 suffix `OPENAI_COMPATIBLE`。