fix: restore T20-stripped print() calls in cosim scripts; add 60 mem validation tests
- Restored print() output in 6 generator/cosim scripts that ruff T20
had silently stripped, leaving dead 'for _var: pass' stubs and
orphaned expressions. Files restored from pre-ruff commit and
re-linted with T20/ERA/ARG/E501 per-file-ignores.
- Removed 5 dead/self-blessing scripts (compare.py, compare_doppler.py,
compare_mf.py, validate_mem_files.py, LUT.py).
- Added test_mem_validation.py: 60 pytest tests validating .mem files
against independently-derived ground truth (twiddle factors, chirp
waveforms, memory addressing, segment padding).
- Updated CI cross-layer-tests job to include test_mem_validation.py.
- All 150 tests pass (61 GUI + 29 cross-layer + 60 mem validation).
Jason
4578621c75