[BUG] /context command does not work through Bedrock.

Environment

• Platform (select one):
• [ ] Anthropic API
• [x] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.88 (Claude Code)
• Operating System: macOS 15.6.1 (24G90)
• Terminal: zsh

Bug Description

/context command shows context usage as empty:

<img width="587" height="206" alt="Image" src="https://github.com/user-attachments/assets/461ad7b6-431a-4169-9acd-78a0173fa652" />

Steps to Reproduce

1. Start Claude Code in bedrock mode (I'm using LiteLLM as a Bedrock proxy):

ANTHROPIC_SMALL_FAST_MODEL=eu.anthropic.claude-3-5-haiku-20241022-v1:0 ANTHROPIC_MODEL=eu.anthropic.claude-sonnet-4-20250514-v1:0 ANTHROPIC_AUTH_TOKEN=sk-XXX ANTHROPIC_BEDROCK_BASE_URL=http://localhost:8888/bedrock CLAUDE_CODE_SKIP_BEDROCK_AUTH=1 CLAUDE_CODE_USE_BEDROCK=1 CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1 claude

Expected Behavior

/context should work

Actual Behavior

/context always shows as empty

Additional Context

<!-- Add any other context about the problem here, such as screenshots, logs, etc. -->