✨ feat: add Search1API provider with web search DeepSeek models

[fatwang2]

💻 变更类型 | Change Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style
• 👷 build
• ⚡️ perf
• 📝 docs
• 🔨 chore

🔀 变更说明 | Description of Change

Add Search1API provider with web search DeepSeek models support:

• Add Search1API provider configuration
• Integrate DeepSeek R1 series models with web search capability
• Support 4 models:
  • DeepSeek R1 70B
  • DeepSeek R1
  • DeepSeek R1 70B Fast
  • DeepSeek R1 Fast
• Configure model abilities and context window sizes
• Add OpenAI-compatible API integration

📝 补充信息 | Additional Information

All models support real-time web search functionality, making them suitable for tasks requiring up-to-date information. The implementation follows the OpenAI-compatible API pattern for seamless integration.

[vercel]

@fatwang2 is attempting to deploy a commit to the LobeChat Desktop Team on Vercel.

A member of the Team first needs to authorize it.

[lobehubbot]

👍 @fatwang2

Thank you for raising your pull request and contributing to our Community
Please make sure you have followed our contributing guidelines. We will review it as soon as possible.
If you encounter any problems, please feel free to connect with us.
非常感谢您提出拉取请求并为我们的社区做出贡献，请确保您已经遵循了我们的贡献指南，我们会尽快审查它。
如果您遇到任何问题，请随时与我们联系。

[arvinxx]

rebase 下 main

[lobehubbot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

---

rebase under main

[fatwang2]

已增加search: true，已 rebase

[lobehubbot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

---

Search: true, rebase

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.54%. Comparing base (72d76fe) to head (839a470).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #6376    +/-   ##
========================================
  Coverage   97.54%   97.54%            
========================================
  Files          13       13            
  Lines        3175     3175            
  Branches      215      415   +200     
========================================
  Hits         3097     3097            
  Misses         78       78            

Flag	Coverage Δ
server	97.54% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
lobe-chat-preview	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 15, 2025 3:28pm

[lobehubbot]

❤️ Great PR @fatwang2 ❤️

The growth of project is inseparable from user feedback and contribution, thanks for your contribution! If you are interesting with the lobehub developer community, please join our discord and then dm @arvinxx or @canisminor1990. They will invite you to our private developer channel. We are talking about the lobe-chat development or sharing ai newsletter around the world.
项目的成长离不开用户反馈和贡献，感谢您的贡献! 如果您对 LobeHub 开发者社区感兴趣，请加入我们的 discord，然后私信 @arvinxx 或 @canisminor1990。他们会邀请您加入我们的私密开发者频道。我们将会讨论关于 Lobe Chat 的开发，分享和讨论全球范围内的 AI 消息。

[lobehubbot]

🎉 This PR is included in version 1.74.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀