[BUG]

Environment

• Platform (select one):
• [ x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.43
• Operating System: macOS Sequoia 15.5
• Terminal: ghostty

Bug Description

Claude Code suddenly can't perform any action (no writes to filesystem, no code changes, no commits, no bash commands, etc..) and lies about output (or rather, is convinced actions executed successfully). It can read filesystem correctly.

Steps to Reproduce

Example prompt: "Can you do a simple test and create in the root project folder a hello.txt file with written inside "Hello World"?"

Claude would confirm the file was created, but no file is in fact created.

Expected Behavior

Should be able to write changes to filesystem

Actual Behavior

No changes on filesystem.

Additional Context

No MCP servers configured. This does NOT happen if starting claude from scratch (claude, it happens only on claude --continue).