References and scope

Primary sources consulted on 2026-10-08. External links are explicit; they load no resource automatically.

Git worktree

Classification: tool-reference. Git worktree.

Separate working trees share repository objects and refs; they are not a security sandbox.

Git merge-base

Classification: tool-reference. Git merge-base.

--is-ancestor distinguishes ancestry, with exit 1 for false and other errors handled separately.

Python unittest

Classification: tool-reference. Python unittest.

Tests prove explicit scenarios, not completeness.

Python statistics

Classification: tool-reference. Python statistics.

Median calculation does not establish a representative sample.

WCAG 2.2

Classification: external-standard. WCAG 2.2.

Normative accessibility reference; this corpus makes no conformance certification.

Diátaxis

Classification: recommendation. Diátaxis.

Documentation framework, not an external engineering standard.