File Picker (FFF) fails in root/home directories

Description

The file picker (FFF) consistently fails to initialize when OpenCode is run from root or home directories. The error message suggests using smaller per-project directories, but this is a limitation that should be handled more gracefully.

Error Message

Failed to init file picker: Can not run certain FFF features in a file system root or home directories. Consider smaller per-project directories.

Steps to Reproduce

1. Open a terminal in root directory (/) or home directory (~)
2. Launch OpenCode
3. Attempt to use file picker functionality
4. Observe the warning message

Expected Behavior

The file picker should either:

• Work in all directories with appropriate performance warnings
• Provide a more user-friendly error message
• Automatically detect and handle large directory scans

Actual Behavior

Repeated warning messages appear in logs:

timestamp=2026-08-20T22:21:03.212Z level=WARN run=4d354d3a message="failed to initialize fff" error="Failed to init file picker: Can not run certain FFF features in a file system root or home directories. Consider smaller per-project directories."

Environment

• OpenCode version: Latest dev build
• OS: macOS 26.0.1
• Terminal: iTerm2

Additional Context

This error appears multiple times across different sessions, suggesting it's a persistent issue rather than a one-time occurrence.