fix: shorten claude codex tool call ids

internal/translator/codex/claude/codex_claude_request.go

@@ -6,7 +6,9 @@
 package claude
 
 import (
+	"crypto/sha256"
 	"encoding/base64"
+	"encoding/hex"
 	"fmt"
 	"strconv"
 	"strings"
@@ -173,7 +175,7 @@ func ConvertClaudeRequestToCodex(modelName string, inputRawJSON []byte, _ bool)
 					case "tool_use":
 						flushMessage()
 						functionCallMessage := []byte(`{"type":"function_call"}`)
-						functionCallMessage, _ = sjson.SetBytes(functionCallMessage, "call_id", messageContentResult.Get("id").String())
+						functionCallMessage, _ = sjson.SetBytes(functionCallMessage, "call_id", shortenCodexCallIDIfNeeded(messageContentResult.Get("id").String()))
 						{
 							name := messageContentResult.Get("name").String()
 							if short, ok := toolNameMap[name]; ok {
@@ -188,7 +190,7 @@ func ConvertClaudeRequestToCodex(modelName string, inputRawJSON []byte, _ bool)
 					case "tool_result":
 						flushMessage()
 						functionCallOutputMessage := []byte(`{"type":"function_call_output"}`)
-						functionCallOutputMessage, _ = sjson.SetBytes(functionCallOutputMessage, "call_id", messageContentResult.Get("tool_use_id").String())
+						functionCallOutputMessage, _ = sjson.SetBytes(functionCallOutputMessage, "call_id", shortenCodexCallIDIfNeeded(messageContentResult.Get("tool_use_id").String()))
 
 						contentResult := messageContentResult.Get("content")
 						if contentResult.IsArray() {
@@ -362,6 +364,23 @@ func isFernetLikeReasoningSignature(signature string) bool {
 	return ciphertextLen > 0 && ciphertextLen%aesBlockSize == 0
 }
 
+// shortenCodexCallIDIfNeeded keeps Claude tool IDs within the OpenAI Responses
+// API call_id limit while preserving a stable, low-collision mapping.
+func shortenCodexCallIDIfNeeded(id string) string {
+	const limit = 64
+	if len(id) <= limit {
+		return id
+	}
+
+	sum := sha256.Sum256([]byte(id))
+	suffix := "_" + hex.EncodeToString(sum[:8])
+	prefixLen := limit - len(suffix)
+	if prefixLen <= 0 {
+		return suffix[len(suffix)-limit:]
+	}
+	return id[:prefixLen] + suffix
+}
+
 func isClaudeWebSearchToolType(toolType string) bool {
 	return toolType == "web_search_20250305" || toolType == "web_search_20260209"
 }