[BUG] Limit hits message became my compacted context

Environment

• Platform (select one):
• [X] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.72 (Claude Code)
• Operating System: Debian 12
• Terminal: mate-terminal

Bug Description

This one's funny. I managed to hit account limits just after /compact message, resulting in:

> This session is being continued from a previous conversation that ran out of context. The conversation is summarized below:
  Claude AI usage limit reached|1755482400.

Steps to Reproduce

1. Approach account limits
2. Type /compact

Expected Behavior

Compaction does not happen. Error message about limits is printed out.

Actual Behavior

Compaction is considered successful, with the error message as its full content.