fix(openai): use truncateUtf16Safe for image gen log value truncation

lzyyzznl · lzyyzznl · commit 5a85116a48c9 · 2026-07-09T17:19:07.000+08:00
One .slice(0, N) truncation site in the OpenAI image generation
provider may cut UTF-16 surrogate pairs in half when the log value
contains multi-byte characters such as emoji. Replace it with
truncateUtf16Safe to keep the truncated output valid Unicode.
diff --git a/extensions/openai/image-generation-provider.ts b/extensions/openai/image-generation-provider.ts
@@ -32,6 +32,7 @@ import {
   sanitizeConfiguredModelProviderRequest,
 } from "openclaw/plugin-sdk/provider-http";
 import { isPrivateNetworkOptInEnabled } from "openclaw/plugin-sdk/ssrf-runtime";
+import { truncateUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";
 import {
   canonicalizeCodexResponsesBaseUrl,
   isOpenAICodexBaseUrl,
@@ -104,7 +105,7 @@ function sanitizeLogValue(value: unknown): string {
     return "unknown";
   }
   return cleaned.length > LOG_VALUE_MAX_CHARS
-    ? `${cleaned.slice(0, LOG_VALUE_MAX_CHARS)}...`
+    ? `${truncateUtf16Safe(cleaned, LOG_VALUE_MAX_CHARS)}...`
     : cleaned;
 }
 
