fix(codex): use truncateUtf16Safe for tool transcript output truncation

lsr911 · claude · lsr911 · commit 765cf63bdd2e · 2026-07-09T15:45:20.000+08:00
Replace naive .slice(0, N) with truncateUtf16Safe() in event-projector
tool transcript output text to prevent surrogate pair splitting.

Co-Authored-By: Claude &lt;noreply@anthropic.com&gt;
diff --git a/extensions/codex/src/app-server/event-projector.ts b/extensions/codex/src/app-server/event-projector.ts
@@ -1,4 +1,5 @@
 // Codex plugin module implements event projector behavior.
+import { truncateUtf16Safe } from "@openclaw/normalization-core/utf16-slice";
 import {
   classifyAgentHarnessTerminalOutcome,
   embeddedAgentLog,
@@ -3066,7 +3067,7 @@ function truncateToolTranscriptText(text: string): string {
   if (text.length <= TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS) {
     return text;
   }
-  return `${text.slice(0, TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS)}\n...(truncated)...`;
+  return `${truncateUtf16Safe(text, TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS)}\n...(truncated)...`;
 }
 
 function toolResultStatusText(params: ToolTranscriptResultInput): string {

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`// Codex plugin module implements event projector behavior.`
	`2`	`+import { truncateUtf16Safe } from "@openclaw/normalization-core/utf16-slice";`
`2`	`3`	`import {`
`3`	`4`	`classifyAgentHarnessTerminalOutcome,`
`4`	`5`	`embeddedAgentLog,`
`@@ -3066,7 +3067,7 @@ function truncateToolTranscriptText(text: string): string {`
`3066`	`3067`	`if (text.length <= TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS) {`
`3067`	`3068`	`return text;`
`3068`	`3069`	`}`
`3069`		- return `${text.slice(0, TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS)}\n...(truncated)...`;
	`3070`	+ return `${truncateUtf16Safe(text, TOOL_TRANSCRIPT_OUTPUT_MAX_CHARS)}\n...(truncated)...`;
`3070`	`3071`	`}`
`3071`	`3072`
`3072`	`3073`	`function toolResultStatusText(params: ToolTranscriptResultInput): string {`