[Copilot]

The macOS-latest (release) check failed because a test expected minimum-likelihood samples in the wrong order. The helper correctly ranks samples by ascending likelihood.

• Regression coverage: Add a test harness and assert the fixture ranks [3,13] (likelihood 2) before [2,12] (likelihood 3), with non-finite samples excluded.

expect_equal(
  Lowlander_kept(result),
  matrix(c(3, 13, 2, 12, 0, 10), ncol = 2, byrow = TRUE)
)

[Copilot]

🟢 Approval recommended

There are no active review issues for the added regression coverage of likelihood ordering and exclusion of non-finite samples.

No open issues 🎉

What changed in this PR

Adds regression coverage for Lowlander_kept, verifying that minimum-likelihood samples are returned in ascending likelihood order and non-finite samples are excluded.

Changes:

• Adds a fixture expecting [3,13], [2,12], then [0,10], excluding the sample with infinite likelihood.
• Adds the package’s testthat entry point.

File	Description
tests/​testthat/​test-lowlander-helpers.R	Tests ascending likelihood ranking and exclusion of non-finite samples.
tests/​testthat.R	Loads testthat and Highlander, then runs the package tests.

_{Review effort: Balanced}