What

• Repeat–until compilation now keeps the body block active for the until condition so locals/upvalues are visible, then explicitly nils/free upvalues before exiting or looping; start block also set to the body for correct break/continue targets (compiler.lua).
• Added a dedicated Vmify-only preset alongside existing profiles (presets.lua).
• New repeat–until regression suite covering scoping, upvalues, side effects, breaks, shadowing, and nested loops under Vmify (repeat-test.lua).

Testing

• Try to compile the repeat-test.lua in tests folder with Vmify preset.
• lua .\cli.lua --p Vmify .\tests\repeat-test.lua
• Execute the output to test.
• lua .\tests\repeat-test.obfuscated.lua

Closes #171