fix(imessage): coalesce merged text on UTF-16 code-point boundary

WeeLi-009 · web-flow · commit 352f47f888de · 2026-06-28T19:08:39.000-07:00
diff --git a/extensions/imessage/src/monitor/coalesce.ts b/extensions/imessage/src/monitor/coalesce.ts
@@ -1,4 +1,5 @@
 // Imessage plugin module implements the same-sender inbound debounce merge.
+import { sliceUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";
 import type { IMessagePayload } from "./types.js";
 
 // Keep the merge contract narrow (caps, ID tracking, reply-context preference)
@@ -136,7 +137,7 @@ export function combineIMessagePayloads(payloads: IMessagePayload[]): CoalescedI
   }
   let combinedText = textParts.join(" ");
   if (combinedText.length > MAX_COALESCED_TEXT_CHARS) {
-    combinedText = `${combinedText.slice(0, MAX_COALESCED_TEXT_CHARS)}…[truncated]`;
+    combinedText = `${sliceUtf16Safe(combinedText, 0, MAX_COALESCED_TEXT_CHARS)}…[truncated]`;
   }
 
   // Merge attachments across bounded entries, capped to keep downstream media

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`// Imessage plugin module implements the same-sender inbound debounce merge.`
	`2`	`+import { sliceUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";`
`2`	`3`	`import type { IMessagePayload } from "./types.js";`
`3`	`4`
`4`	`5`	`// Keep the merge contract narrow (caps, ID tracking, reply-context preference)`
`@@ -136,7 +137,7 @@ export function combineIMessagePayloads(payloads: IMessagePayload[]): CoalescedI`
`136`	`137`	`}`
`137`	`138`	`let combinedText = textParts.join(" ");`
`138`	`139`	`if (combinedText.length > MAX_COALESCED_TEXT_CHARS) {`
`139`		- combinedText = `${combinedText.slice(0, MAX_COALESCED_TEXT_CHARS)}…[truncated]`;
	`140`	+ combinedText = `${sliceUtf16Safe(combinedText, 0, MAX_COALESCED_TEXT_CHARS)}…[truncated]`;
`140`	`141`	`}`
`141`	`142`
`142`	`143`	`// Merge attachments across bounded entries, capped to keep downstream media`