Bug Description

When using a proxy provider that returns Chinese error messages for context overflow, OpenClaw's auto-compaction fails to trigger because isContextOverflowError() only checks English patterns.

Steps to Reproduce

1. Configure a proxy provider that returns Chinese error messages
2. Exceed the context window limit
3. Provider returns error like: 上下文过长 or 请压缩上下文
4. Auto-compaction does NOT trigger

Expected Behavior

Auto-compaction should trigger regardless of error message language.

Actual Behavior

isContextOverflowError() in dist/pi-embedded-helpers-*.js only matches English patterns. Chinese messages are ignored, session gets stuck.

Suggested Fix

Add i18n patterns to isContextOverflowError():

|| errorMessage.includes("上下文过长")
|| errorMessage.includes("上下文超出")
|| errorMessage.includes("上下文长度超")
|| errorMessage.includes("请压缩上下文")

Or better: allow custom overflow patterns in openclaw.json.

Environment

• OpenClaw: 2026.2.21-2
• OS: macOS arm64
• Provider: proxy returning Chinese errors

Workaround

Manual patch on dist/pi-embedded-helpers-*.js (overwritten on update).