fix(opy-compiler): restore residual canonical WIR equivalence

[e54-bot]

Summary

• Align OPY array, vector, condition, and format lowering with the pinned canonical WIR contract.
• Restore direct workshop-rs::roundtrip::equivalent coverage for all six OPY-owned Issue Restore canonical WIR equivalence for residual compiler lowering cases #89 residual fixtures.
• Lower OverPy debug(...) through native Workshop createHudText actions and values, restoring direct equivalence for synthetic/control-flow; no Workshop Debug-carrier follow-up is required.
• Update compatibility expectations and regression coverage.

Verification

• cargo test --locked --workspace --all-targets --all-features
• cargo clippy --locked --workspace --all-targets --all-features -- -D warnings
• python3 -B -m unittest discover -s compatibility/tests
• 51-fixture compiler corpus runner
• OPY differential corpus test

Fixes #89

[Teakowa]

synthetic/control-flow is still attributed to workshop-rs#123, but #123 is already closed and its approved canonical-carrier scope does not cover the remaining Debug divergence. Issue #89 requires a canonical Workshop follow-up with stable source attribution when equivalence cannot be restored here. Please either restore direct WIR equivalence for this fixture or create/reference the correctly scoped Workshop follow-up before closing #89.

[Teakowa]

Ownership clarification: the remaining synthetic/control-flow divergence is OPY-owned. OverPy debug(...) is a source-language helper that must lower to native Workshop actions/values; it should not be treated as a missing canonical Workshop Debug carrier. Issue #89 has been updated accordingly. The existing review blocker still stands, but the required direction is to restore native-WIR equivalence here rather than create a Workshop Debug-carrier follow-up.

[Teakowa]

PR body is stale: it still says synthetic/control-flow remains a Workshop-owned Debug carrier gap, while this revision correctly restores direct equivalence through OPY-owned debug(...) lowering. Update the summary to match the implemented ownership/contract before merging.

[Teakowa]

LGTM