enable debug-asserts and overflow checks

[arvidn]

when running tests in release mode

Documented here https://doc.rust-lang.org/cargo/reference/environment-variables.html

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Note

Low Risk
Low risk: changes are limited to CI test configuration and assertion/test gating, with no functional runtime behavior changes outside debug/assert-enabled builds.

Overview
CI unit_tests now runs cargo test --release with debug assertions and overflow checks enabled via Cargo profile env vars, and executes ignored tests by adding -- --include-ignored.

The extremely slow test_very_long_list is switched from #[cfg(not(debug_assertions))] to #[ignore] with guidance to run it explicitly, and TreeCache::restore()’s stack invariant check is changed from a release-only assert_eq! to a debug_assert_eq! so it’s enforced when debug assertions are enabled.

^{Written by Cursor Bugbot for commit 80aa800. This will update automatically on new commits. Configure here.}

[coveralls-official]

Pull Request Test Coverage Report for Build 22997261819

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 17 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.2%) to 87.921%

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Files with Coverage Reduction	New Missed Lines	%
src/serde/object_cache.rs	17	90.48%

Totals
Change from base Build 22870033048:	-0.2%
Covered Lines:	7119
Relevant Lines:	8097

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💛 - Coveralls