4.5.0

Bug Fixes

• Fix inverted pager detection logic (returned error string instead of path)
• Fix repo.Clone ignoring destination directory parameter
• Fix sheet loading using append on pre-sized slices, causing nil entries
• Clean up partial files on copy failure
• Trim whitespace from editor config during loading

Security

• Add path traversal protection for cheatsheet names

Performance

• Move regex compilation outside search loop
• Replace O(n²) string concatenation with strings.Join in search

Build & Testing

• Remove go:generate; embed config and usage as string literals
• Parallelize release builds
• Add fuzz testing infrastructure
• Improve test coverage from 38.9% to 50.2%

Documentation

• Fix inaccurate code examples in HACKING.md
• Add missing --conf and --all options to man page
• Add ADRs for path traversal, env parsing, and search parallelization
• Update CONTRIBUTING.md to reflect project policy