version 0.5.1

Changed
No library code changes in this release.
Modernized the local manual E2E smoke test (test_mcp.py, not part of the pytest suite) to cover the full 0.5.0 tool set — it was stale and only exercised tools present before 0.5.0. Now verifies ctx_resolve, ctx_bug, ctx_doc, how_to_ctx, and the ctx_export/ctx_import object-form round-trip (re-confirming the 0.5.0 import fix) against a live server.
Notes
Purely a maintenance/version bump. If you're already on 0.5.0, there's nothing functional to gain from upgrading — safe to skip this release for production installs.
99 tests green (pytest suite, unaffected by this change).
Upgrade (optional):

pip install -U one-ctx