[Amanpal9]

Summary

• Make numeric conversions explicit in the EAH/EAF and problem headers identified in GCC warns about narrowing conversions in four headers #238.
• Keep bit-valued Ising neighbors as int, and explicitly narrow the rounded ranking value, which is in the range 0–1.

Closes #238

Verification

• git diff --check passed with cr-at-eol for the repository's CRLF files.
• Tests and the compiler-warning build were not run.

[Amanpal9]

Verification update: configured and built test_ioh with Visual Studio 2022 (MSVC, Debug). The full test executable ran 115 tests: 115 passed, 0 failed; 2 tests are disabled. git diff --check also passed with cr-at-eol for the repository's CRLF files. I could not run the GCC conversion-warning CI locally because the available GCC is 6.3; project CI uses newer GCC versions.