[BUG] todos/ never gets cleaned up

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: <!-- output of claude --version --> 1.0.98
• Operating System: <!-- e.g. macOS 14.3, Windows 11, Ubuntu 22.04 --> macOS 15.16.1
• Terminal: <!-- e.g. iTerm2, Terminal App --> Terminal

Bug Description

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Claude Code stores todo lists in ~/.claude/todos/. It seems as though these files never or rarely get cleaned up or deleted - have some going back to April. Not a big issue I think since the whole directory is still under 1MB with >1k todo lists, but seems like something that should be rectified. Maybe they're remnants of Todo lists that were interrupted (although many just have an empty array).

Steps to Reproduce

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Expected Behavior

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Actual Behavior

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Additional Context

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