Vertex Claude 开关 + 工具调用修复

[XTFG]

Summary by CodeRabbit

• New Features

  • Added Vertex provider setting to route Claude model requests through Gemini, directing traffic to Google endpoints instead of Anthropic.
  • New toggle switch in channel settings to enable/disable Gemini conversion for Claude models.

• Improvements

  • Enhanced handling of multiple tool calls in Claude streaming responses.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This PR adds a feature flag VertexClaudeToGemini to enable routing Claude model requests through the Gemini adapter for Vertex channels. It includes a new control flow in the Vertex adaptor to conditionally delegate Claude requests, infrastructure updates to track tool-use blocks during Claude-to-OpenAI conversion, and UI controls to manage the setting in channel configuration.

Changes

Cohort / File(s)	Summary
Vertex Channel Configuration dto/channel_settings.go	Added VertexClaudeToGemini boolean field to ChannelOtherSettings to store the feature flag; minor formatting adjustment to existing VertexKeyType line.
Vertex Adaptor Routing Logic relay/channel/vertex/adaptor.go	Implemented conditional routing in ConvertClaudeRequest: when VertexClaudeToGemini is enabled, Claude requests delegate to Gemini adaptor; in Init, model selection switches between RequestModeClaude and RequestModeGemini based on the flag for "claude"-prefixed upstream models.
Claude Conversion Infrastructure relay/common/relay_info.go	Added ToolUseStarted map field to ClaudeConvertInfo to track which tool-use blocks have begun; initialized in GenRelayInfoClaude.
Tool-Use Block Batching service/convert.go	Introduced generateToolUseStopBlocks() function to finalize multiple tool-use blocks; enhanced streaming tool-call handling to generate content_block_start and content_block_delta for each tool call with index computation; added sort package import.
Channel Settings UI web/src/components/table/channels/modals/EditChannelModal.jsx	Added UI toggle for vertex_claude_to_gemini setting under Vertex (type 41); implemented parsing from and serialization to channel settings JSON to prevent top-level field leakage; includes descriptive text explaining Claude-to-Gemini format conversion.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~40 minutes

Possibly related PRs

• feat: deepseek claude endpoint #1832: Modifies Claude request routing in channel adaptors with conditional delegation logic similar to this PR's ConvertClaudeRequest changes.
• feat: Claude to gemini （适配claude格式调用gemini渠道模型） #1443: Implements ConvertClaudeRequest in the Gemini adaptor, which directly complements this PR's flag-driven routing to delegate Claude traffic to Gemini.
• fix: edit vertex key type #2311: Modifies EditChannelModal.jsx to persist Vertex-specific configuration within channel settings, using the same pattern for preventing top-level field leakage.

Suggested reviewers

• Calcium-Ion

Poem

🐰 Through flags and flows, the rabbit hops with glee,
Claude now dances with Gemini, you see!
Tool blocks batched in streaming grace,
Settings UI finds its place,
Routing routes where they should be! ✨

✨ Finishing touches

• 📝 Generate docstrings

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