feat: add language-aware ChatGPT translation parameters

[ZainKazmiii]

Involved Issue / 该 PR 相关 Issue

Close #6696
/claim #6696

Example for the Proposed Route(s) / 路由地址示例

NOROUTE

New RSS Route Checklist / 新 RSS 路由检查表

• New Route / 新的路由
  • Follows Script Standard / 跟随 路由规范
• Anti-bot or rate limit / 反爬/频率限制
  • If yes, do your code reflect this sign? / 如果有, 是否有对应的措施?
• Date and time / 日期和时间
  • Parsed / 可以解析
  • Correct time zone / 时区正确
• New package added / 添加了新的包
• Puppeteer

Note / 说明

Summary

• add optional chatgpt_to (alias chatgpt_lang) and chatgpt_from query parameters in the global parameter middleware
• when language overrides are provided, ChatGPT prompt generation translates title/content toward the requested target language
• include language pair in OpenAI cache keys when a target language is requested, while source-only requests keep the default cache key
• add focused tests for target-language override and source-only cache behavior
• fix import ordering in lib/middleware/parameter.test.ts to satisfy project lint rules

Validation

• pnpm install --frozen-lockfile --ignore-scripts
• npx -y node@24 node_modules/tsx/dist/cli.mjs scripts/workflow/build-routes.ts
• NODE_ENV=test npx -y node@24 node_modules/vitest/vitest.mjs lib/middleware/parameter.test.ts (49 passed)

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[ZainKazmiii]

Quick follow-up on this bounty PR for #6696.

I confirmed the branch is current with upstream master and there are no failed or pending checks on the PR head from my side. If you want any naming or test adjustments before merge, I can update quickly.