Preserve Java source path fidelity in compile smoke script

[Nullkernel]

Motivation

• Make the smoke compile step reflect real source filenames and relative paths so javac reports filename/path-related errors reliably instead of masking them by renaming files to detected public class names.

Description

• Updated scripts/compile_smoke.sh to copy each Java source into the temp workspace using a mirrored relative path at "$work_dir/$file" instead of renaming files to the public class name.
• Ensure parent directories are created before copying with mkdir -p "$(dirname "$compile_target")" so the source tree is mirrored under the temp work dir.
• Kept deterministic file ordering (find ... | LC_ALL=C sort) and preserved the per-file [PASS]/[FAIL] reporting and aggregated failure counting.

Testing

• Ran bash scripts/compile_smoke.sh and confirmed per-file [PASS]/[FAIL] output appears and the script exits non-zero when compiler errors are present (observed expected failures where public class names did not match file names).
• No other automated tests were changed.

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Codex Task