2314a0d371
- Add follow?: boolean option to GlobOptions interface - Change buildRgArgs to use !== false pattern for hidden and follow flags - Change buildFindArgs to use === false pattern, add -L for symlinks - Change buildPowerShellCommand to use !== false pattern for hidden - Remove -FollowSymlink from PowerShell (unsupported in PS 5.1) - Export build functions for testing - Add comprehensive BDD-style tests (18 tests, 21 assertions) Note: Symlink following via -FollowSymlink is not supported in Windows PowerShell 5.1. OpenCode auto-downloads ripgrep which handles symlinks via --follow flag. PowerShell fallback is a safety net that rarely triggers. Fixes #631