[BUG] @ file autocomplete shows .git/objects and dependency directories causing 2-5s delays

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Environment:

• Platform: macOS 15.5 (Sequoia)
• Claude CLI version: 2.0.42
• Terminal: Ghostty
• Installation method: Native installer

Bug Description:

The @ file autocomplete shows files from directories that should typically be excluded, including:

• .git/objects/ from the current repository
• node_modules/ from ~/.claude/skills/
• .venv/ and __pycache__/ from ~/.claude/skills/

This causes inconsistent performance with 2-5 second delays when using @ file references.

Actual Behavior:

• Autocomplete takes 2-5 seconds to appear
• Suggestions include files from:
• .git/objects/f6/, .git/objects/fd/, etc.
• ~/.claude/skills/*/node_modules/...
• ~/.claude/skills/*/.venv/lib/python3.*/site-packages/...
• Various __pycache__/, .dist-info/ directories

Workaround:

Manual cleanup of dependency directories helps performance:

find ~/.claude/skills -name "node_modules" -type d -exec rm -rf {} +
find ~/.claude/skills -name ".venv" -type d -exec rm -rf {} +

However, .git/objects/ still appears in suggestions and the underlying issue remains.

Additional Context:

• Issue appears to affect Rust-based fuzzy finder (2.0.34+)
• Standard tools like ripgrep --files automatically exclude these directories
• @ autocomplete seems to scan globally (including ~/.claude/skills/) rather than just current project
• No apparent way to configure exclusion patterns for @ autocomplete

What Should Happen?

@ autocomplete should have default exclusion patterns for common directories:

• .git/ (especially .git/objects/)
• node_modules/
• .venv/, __pycache__/
• Other dependency/build directories

These are standard exclusions in most file search tools (ripgrep, fd, etc.) and including them provides no value to users.

Steps to Reproduce

1. Use a repository with commit history (generates .git/objects/)
2. Have custom skills installed that use dependencies:

• Skills using npm (with node_modules/)
• Skills using Python (with .venv/)

1. Start Claude Code in any project: claude
2. Type @ followed by 1-2 letters
3. Autocomplete takes 2-5s, freezes UI

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Before the Rust re-implementation of fuzzy finder?

Claude Code Version

2.0.42

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_