v0.5.6 — sync dist/ with smoke-test removal

Patch release that brings the npm tarball in line with the source state.

Commit c1cf0b9 removed the install-time smokeTestHookCommand from src/ and the test suite (-123/+14 lines, 609 tests pass) but didn't regenerate dist/. v0.5.5 on npm still shipped the smoke test code. This release rebuilds dist/ so installs match the source.

Why the smoke test was removed

The post-install hook-liveness canary (in nlm digest) already catches drift and runtime failures by correlating Claude Code session count with hook fire count daily. The install-time smoke test was duplicate coverage that also caused cross-platform flakiness — Linux raised EPIPE on closed stdin in places macOS tolerated. The EPIPE workaround commit (2187322) was also reverted.

No source changes since v0.5.5 — just the dist/ regeneration and the bump.

609/609 tests passing.