feat: 添加日志表格输出速度 (tokens/s) 计算字段

[Zhenyi-Wang]

Summary

• 在 /console/log 使用日志表格中新增「速度」列，显示 LLM 输出的 tokens/s 指标
• 计算公式：completion_tokens / (use_time - frt/1000)，即输出 token 数除以首字后的生成耗时
• 表头附带 help 图标，hover 显示计算公式说明
• 补全 7 种语言（zh-CN、en、zh-TW、ja、fr、ru、vi）的国际化翻译

Closes #717

Changes

文件	说明
UsageLogsColumnDefs.jsx	新增 speed 列定义（表头 + render）
useUsageLogsData.jsx	COLUMN_KEYS、可见性配置、预计算 speed
web/src/i18n/locales/*.json	7 个语言文件添加翻译

Test plan

• 访问 /console/log，确认「速度」列显示在「输出」和「花费」之间
• 流式请求：speed = completion_tokens / (use_time - frt)，数值正确
• 非流式请求：frt 为 0，speed = completion_tokens / use_time
• frt >= use_time 时显示 -
• 非消费类型日志（充值/管理/系统）不显示
• 切换语言，确认翻译正确显示

Summary by CodeRabbit

• New Features
  • Added output speed column to usage logs table displaying tokens per second. Speed calculated as output tokens divided by (total time - first token latency). Shown for applicable record types. Includes multilingual support for English, French, Japanese, Russian, Vietnamese, Simplified Chinese, and Traditional Chinese.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3345fde1-cbb0-46c2-b01d-f68e79176f6c

📥 Commits

Reviewing files that changed from the base of the PR and between 8c8661d and d85dd67.

📒 Files selected for processing (9)

• web/src/components/table/usage-logs/UsageLogsColumnDefs.jsx
• web/src/hooks/usage-logs/useUsageLogsData.jsx
• web/src/i18n/locales/en.json
• web/src/i18n/locales/fr.json
• web/src/i18n/locales/ja.json
• web/src/i18n/locales/ru.json
• web/src/i18n/locales/vi.json
• web/src/i18n/locales/zh-CN.json
• web/src/i18n/locales/zh-TW.json

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Walkthrough

A new speed metric column is added to the usage logs table that displays output tokens per second, calculated as completion tokens divided by adjusted generation time (total time minus first response time). The feature includes conditional rendering for specific log types and multilingual support.

Changes

Cohort / File(s)	Summary
Speed Column Display web/src/components/table/usage-logs/UsageLogsColumnDefs.jsx, web/src/hooks/usage-logs/useUsageLogsData.jsx	Added new speed column definition with conditional rendering for record types 0, 2, 5, and 6. Implemented speed calculation as completion_tokens / (use_time - first_response_time), with fallback to 0 and formatting to 1 decimal place.
Internationalization web/src/i18n/locales/{en,fr,ja,ru,vi,zh-CN,zh-TW}.json	Added translations for speed metric label and formula explanation across six language files: English, French, Japanese, Russian, Vietnamese, Simplified Chinese, and Traditional Chinese.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested reviewers

• seefs001

Poem

🐰 Hops with glee, let me say,
Speed metrics brighten up the day!
Tokens flowing, swift and true,
Six languages, one feature new! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding a speed (tokens/s) calculation column to the usage logs table.
Linked Issues check	✅ Passed	The PR successfully implements all coding requirements from issue #717: adds speed column to logs table, implements calculation logic, updates column definitions, and adds translations for 7 languages.
Out of Scope Changes check	✅ Passed	All changes are directly related to implementing the speed column feature: column definition, calculation logic, visibility configuration, and i18n translations for the new feature.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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