Remove useless empty-body if-blocks that check file size/existence without
doing anything, replacing them with meaningful puts output where appropriate.
Split monolithic verilog test files into individual per-test files with
their own .ok golden files. Update .ok files to match actual output.
Co-Authored-By: Claude Opus 4.6 <[email protected]>
Signed-off-by: Jaehyun Kim <[email protected]>