Memory spike to 12GB when reviewing changes

Description

Claude Code sessions spike to ~12GB memory usage when asking to review current changes (e.g., "review current changes"). The process becomes unresponsive and must be force-killed.

Environment

• Claude Code version: 2.1.25
• OS: macOS (Darwin 25.2.0)
• Platform: darwin arm64

Steps to Reproduce

1. Start a Claude Code session
2. Ask to "review current changes" (git diff review)
3. Observe memory usage spike to ~12GB within seconds

Expected Behavior

Memory usage should remain reasonable (<1GB) during code review operations.

Actual Behavior

• Memory spikes to 11-12GB almost immediately
• Process becomes stuck/unresponsive
• Multiple sessions can accumulate, each consuming ~12GB
• Must force-kill with kill -9 <pid>

Screenshots

Multiple Claude Code 2.1.25 processes showing 11.46-11.58 GB memory usage in Activity Monitor.

Additional Context

• Issue occurs repeatedly and consistently
• Happens even with relatively small changesets
• MCP servers (chrome-devtools-mcp, browsermcp) were active but unclear if related

Workaround

Force-kill the process:

ps aux | grep claude | grep -v grep | awk '{print $2, $6/1024 " MB"}'
kill -9 <pid>