[BUG] Slow startup due to massive .claude.json

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.77 (Claude Code)
• Operating System: macOS Sequoia 15.6 (Build 24G84)
• Terminal: iTerm2 Build 3.5.14

Bug Description

Claude Code startup takes several seconds.

Steps to Reproduce

1. Run claude
2. Wait
3. See prompt

Expected Behavior

Startup instantly, like it used to

Actual Behavior

Takes ~5 seconds

Additional Context

May be related to huge .claude.json
https://github.com/anthropics/claude-code/issues/1449

❯ du -h .claude.json
238M	.claude.json

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