QA: run_qa v1.6 form + ExplicitImports

[ChrisRackauckas-Claude]

Please ignore until reviewed by @ChrisRackauckas. Draft.

Brings this repo's QA group onto SciMLTesting 1.6.0's run_qa v1.6 form with ExplicitImports enabled. Collapses the hand-rolled test/qa/{qa,explicit_imports,jet}.jl into a single qa.jl:

using SciMLTesting, EllipsisNotation, Test
using JET

run_qa(
    EllipsisNotation;
    explicit_imports = true,
    ei_kwargs = (;
        all_explicit_imports_are_public = (; ignore = (:tail,)),
    ),
)

This runs Aqua.test_all (incl. the ambiguities child-process and persistent_tasks checks — both new vs the old per-check list), JET.test_package, and all six ExplicitImports checks in one harness call. The JET @test_opt/@test_call type-stability assertions from the old jet.jl are preserved as a separate testset, so no coverage is lost.

ExplicitImports findings (released SciMLTesting 1.6.0)

Ran the six EI checks on both QA lanes (lts/1.10 and 1/1.11):

• no_implicit_imports, no_stale_explicit_imports, all_explicit_imports_via_owners, all_qualified_accesses_via_owners, all_qualified_accesses_are_public — pass clean.
• all_explicit_imports_are_public — fails on Julia 1.10 only: Base.tail (imported via import Base: to_indices, tail for the to_indices/_ndims_index machinery) is a Base internal on 1.10 and is declared public only on 1.11+. Resolved with ei_kwargs all_explicit_imports_are_public = (; ignore = (:tail,)) (documented inline). No @test_broken: it is a genuine pass once ignored, and the ignore is benign on 1.11 where tail is already public.

No aqua_broken / jet_broken / ei_broken: every check passes hard. report_package(target_modules=(EllipsisNotation,), mode=:typo) yields 0 reports, so the default hard JET path passes.

Deps (test/qa/Project.toml)

• SciMLTesting compat → "1.6".
• Drop ExplicitImports and SafeTestsets (both transitive via SciMLTesting).
• Keep Aqua (the test_ambiguities child-process needs Aqua a direct dep) and JET (JET runs).

Verification

Local GROUP=QA julia --project=. Pkg.test against released SciMLTesting 1.6.0:

• Julia 1.10: QA/qa.jl | 31 31 (Pass/Total), 0 fail/error.
• Julia 1.11: QA/qa.jl | 31 31 (Pass/Total), 0 fail/error.

🤖 Generated with Claude Code