feat: Add support for Claude thinking parameter in request

relay/channel/aws/dto.go

@@ -16,6 +16,7 @@ type AwsClaudeRequest struct {
 	StopSequences    []string               `json:"stop_sequences,omitempty"`
 	Tools            []claude.Tool          `json:"tools,omitempty"`
 	ToolChoice       any                    `json:"tool_choice,omitempty"`
+	Thinking         *claude.Thinking       `json:"thinking,omitempty"`
 }
 
 func copyRequest(req *claude.ClaudeRequest) *AwsClaudeRequest {
@@ -30,5 +31,6 @@ func copyRequest(req *claude.ClaudeRequest) *AwsClaudeRequest {
 		StopSequences:    req.StopSequences,
 		Tools:            req.Tools,
 		ToolChoice:       req.ToolChoice,
+		Thinking:         req.Thinking,
 	}
 }

relay/channel/claude/dto.go

@@ -54,9 +54,15 @@ type ClaudeRequest struct {
 	TopP              float64         `json:"top_p,omitempty"`
 	TopK              int             `json:"top_k,omitempty"`
 	//ClaudeMetadata    `json:"metadata,omitempty"`
-	Stream     bool   `json:"stream,omitempty"`
-	Tools      []Tool `json:"tools,omitempty"`
-	ToolChoice any    `json:"tool_choice,omitempty"`
+	Stream     bool      `json:"stream,omitempty"`
+	Tools      []Tool    `json:"tools,omitempty"`
+	ToolChoice any       `json:"tool_choice,omitempty"`
+	Thinking   *Thinking `json:"thinking,omitempty"`
+}
+
+type Thinking struct {
+	Type         string `json:"type"`
+	BudgetTokens int    `json:"budget_tokens"`
 }
 
 type ClaudeError struct {