Internal Code Organization

Significant internal restructuring for improved maintainability:

• Ripgrep module relocated from line ~335k to line ~3.8k for faster loading in --ripgrep mode
• Entry point handling simplified with better separation of concerns
• Changed from process.exit() to process.exitCode = for more graceful shutdown
• ~6,898 variable renames throughout codebase (no functional impact)
• Evidence: Entry point refactoring at lines 461763-461773 in az8() function, ripgrep module relocation to lines 3856-3869