v0.13.1

Real-CLI integration tests now skip gracefully when the claude binary or a claudewheel profile is unavailable, so CI and credential-less environments no longer fail the suite.

Context

The 0.13.0 release tagged and pushed successfully but its PyPI and npm publish
was blocked because the CI test suite failed on the GitHub runner: the newly
scaffolded full-suite CI ran the real-CLI integration tests in a credential-less
environment with no claude binary and no claudewheel profiles, and claudewheel
0.22's resolve_profile raises instead of failing soft, turning what should be
skips into 20 hard errors. This hotfix adds a shared skip guard so those tests
skip gracefully when their external prerequisites are absent, unblocking the
publish that the 0.13.0 CI gate held back. bump = hotfix because the change is
test-infrastructure only (no user-facing changelog entries).

Hotfix

• Real-CLI integration tests now skip gracefully when the claude binary or a claudewheel profile is unavailable, so CI and credential-less environments no longer fail the suite.