Each test declares file dependencies in a TOUCHFILES map. The test runner
checks git diff against the base branch and only runs tests whose
dependencies were modified. Global touchfiles (session-runner, eval-store,
gen-skill-docs) trigger all tests.
New scripts: test:e2e:all, test:evals:all, eval:select
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>