test: add unit coverage for src/utils/array.ts (#994)

[alexsmolya]

Summary

Adds comprehensive unit test coverage for src/utils/array.ts (chunk, unique, and uniquePathArrays) in tests/utils/array.test.ts, addressing #994.

Test Coverage

• chunk(items, size): exact multiples, trailing short groups, size larger than array, empty array input, size 1 chunking, object arrays, and input immutability.
• unique(items): deduplication with first-seen order preservation, all-unique inputs, empty inputs, identical element collapsing, and input immutability.
• uniquePathArrays(paths): path array deduplication, path element order distinctness, single vs multi-element paths, empty path deduplication, and input immutability.

Verification

• npm test tests/utils/array.test.ts (18/18 passing)
• npm run lint:tests (clean hygiene check)
• npm run build (successful compilation)
• npm test (all 112 suites / 1,424 tests passing)

Closes #994

[sonukapoor]

Thorough set. The edge cases (empty input, size larger than the array, size 1) and the no-mutation checks are exactly what I'd want here, and the uniquePathArrays coverage including empty-path dedup and order-sensitivity is a nice touch. Thanks for taking it.

[sonukapoor]

Merged - thank you @alexsmolya! If CVE Lite CLI has been useful to you, a star on the repo genuinely helps other developers find it - no obligation at all.