feat(ollama): passthrough Claude Messages and OpenAI Responses

[seefs001]

⚠️ 提交说明 / PR Notice

Important

• 请提供人工撰写的简洁摘要，避免直接粘贴未经整理的 AI 输出。

📝 变更描述 / Description

(简述：做了什么？为什么这样改能生效？请基于你对代码逻辑的理解来写，避免粘贴未经整理的内容)

Ollama渠道类型 支持原生 /v1/messages 和 /v1/responses

🚀 变更类型 / Type of change

• 🐛 Bug 修复 (Bug fix) - 请关联对应 Issue，避免将设计取舍、理解偏差或预期不一致直接归类为 bug
• ✨ 新功能 (New feature) - 重大特性建议先通过 Issue 沟通
• ⚡ 性能优化 / 重构 (Refactor)
• 📝 文档更新 (Documentation)

🔗 关联任务 / Related Issue

• Closes claude code 接入 ollama 的时候 会报错 Unable to validate model: undefined is not an object (evaluating 'U.usage.input_tokens') #6995

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Summary by CodeRabbit

• New Features

  • Added support for Claude-format requests through the Ollama integration.
  • Added support for OpenAI Responses requests.
  • Added handling for embeddings and compact Responses modes.
  • Improved request routing based on the selected relay mode.

• Bug Fixes

  • Responses requests no longer return an unsupported-operation error.
  • Response handling now correctly supports additional request formats and modes.

[coderabbitai]

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Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 5474b190-c959-448b-8a6f-bcd213920334

📥 Commits

Reviewing files that changed from the base of the PR and between cae3676 and 24e4f34.

📒 Files selected for processing (1)

• relay/channel/ollama/adaptor.go

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Walkthrough

The Ollama adaptor now supports Claude-format requests, OpenAI Responses requests, embeddings, Responses modes, and explicit relay-mode URL selection. Claude headers and response handling now use the Claude adaptor.

Changes

Ollama protocol support

Layer / File(s)	Summary
Request routing and conversion relay/channel/ollama/adaptor.go	The adaptor delegates Claude conversion, selects URLs by RelayMode, applies Claude headers, selects chat or generate conversion, and delegates OpenAI Responses conversion.
Format-specific response dispatch relay/channel/ollama/adaptor.go	DoResponse dispatches Claude, embeddings, Responses, compact Responses, and default stream or chat responses to the corresponding handlers.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant OllamaAdaptor
  participant ClaudeAdaptor
  participant OpenAIAdaptor
  participant OllamaAPI
  Client->>OllamaAdaptor: Submit relay request
  alt Claude format
    OllamaAdaptor->>ClaudeAdaptor: Convert request and configure URL
    OllamaAdaptor->>ClaudeAdaptor: Apply headers
  else OpenAI Responses mode
    OllamaAdaptor->>OpenAIAdaptor: Convert request
  else Other relay modes
    OllamaAdaptor->>OllamaAdaptor: Select mode-specific URL and conversion
  end
  OllamaAdaptor->>OllamaAPI: Send converted request
  OllamaAPI-->>OllamaAdaptor: Return response
  alt Claude format
    OllamaAdaptor->>ClaudeAdaptor: Handle response
  else Responses modes
    OllamaAdaptor->>OpenAIAdaptor: Handle response
  else Embeddings mode
    OllamaAdaptor->>OllamaAdaptor: Handle embedding response
  else Other modes
    OllamaAdaptor->>OllamaAdaptor: Handle stream or chat response
  end

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Suggested reviewers: calcium-ion

Poem

A rabbit hops through routes anew
Claude and Responses join the queue
Headers bloom, modes guide the way
Embeddings answer without delay
Streams and chats return in tune

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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