Revert "fix: aws text content blocks must be non-empty"

relay/channel/claude/relay-claude.go

@@ -250,9 +250,6 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe
 		}
 		if message.Role == "assistant" && message.ToolCalls != nil {
 			fmtMessage.ToolCalls = message.ToolCalls
-			if message.IsStringContent() && message.StringContent() == "" {
-				fmtMessage.SetNullContent()
-			}
 		}
 		if lastMessage.Role == message.Role && lastMessage.Role != "tool" {
 			if lastMessage.IsStringContent() && message.IsStringContent() {
@@ -261,7 +258,7 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe
 				formatMessages = formatMessages[:len(formatMessages)-1]
 			}
 		}
-		if fmtMessage.Content == nil && !(message.Role == "assistant" && message.ToolCalls != nil) {
+		if fmtMessage.Content == nil {
 			fmtMessage.SetStringContent("...")
 		}
 		formatMessages = append(formatMessages, fmtMessage)
@@ -376,9 +373,9 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe
 				if message.ToolCalls != nil {
 					for _, toolCall := range message.ParseToolCalls() {
 						inputObj := make(map[string]any)
-						if err := common.UnmarshalJsonStr(toolCall.Function.Arguments, &inputObj); err != nil {
+						if err := json.Unmarshal([]byte(toolCall.Function.Arguments), &inputObj); err != nil {
 							common.SysLog("tool call function arguments is not a map[string]any: " + fmt.Sprintf("%v", toolCall.Function.Arguments))
-							inputObj = map[string]any{}
+							continue
 						}
 						claudeMediaMessages = append(claudeMediaMessages, dto.ClaudeMediaMessage{
 							Type:  "tool_use",
@@ -451,17 +448,11 @@ func StreamResponseClaude2OpenAI(claudeResponse *dto.ClaudeResponse) *dto.ChatCo
 			choice.Delta.Content = claudeResponse.Delta.Text
 			switch claudeResponse.Delta.Type {
 			case "input_json_delta":
-				arguments := "{}"
-				if claudeResponse.Delta.PartialJson != nil {
-					if partial := strings.TrimSpace(*claudeResponse.Delta.PartialJson); partial != "" {
-						arguments = partial
-					}
-				}
 				tools = append(tools, dto.ToolCallResponse{
 					Type:  "function",
 					Index: common.GetPointer(fcIdx),
 					Function: dto.FunctionResponse{
-						Arguments: arguments,
+						Arguments: *claudeResponse.Delta.PartialJson,
 					},
 				})
 			case "signature_delta":