🧹 [Code Health] Split overly long test function in stdlib_tests.rs

[Tcode-Motion]

🎯 What: The overly long test_crypto_hash_and_compression function in stdlib/tests/stdlib_tests.rs (146 lines) was split into three focused test functions: test_hash_operations, test_crypto_operations, and test_compression_operations.
💡 Why: Splitting this massive function improves the maintainability, test isolation, and readability of the codebase by adhering to the single responsibility principle.
✅ Verification: Ran cargo test --workspace to ensure all tests passed successfully. The test output verified the new test functions ran and tests remained functionally correct.
✨ Result: Improved test organization and maintainability with no regressions.

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PR created automatically by Jules for task 9606864914551889964 started by @Tcode-Motion

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