MLX-Reason-CT 0.2.2

Fix public installation by pinning the public Apache-2.0 medmlx-core v0.1.2 release. Existing tags remain unchanged. Quick-start instructions now reference v0.2.2.

Validation on macOS arm64 / Python 3.12.12 / MLX 0.32.3 Metal:

• 95 tests passed; formatting, lock consistency, wheel/source builds and metadata checks passed.
• Fresh wheel installation succeeded with Git credentials, user configuration and caches disabled; dependency compatibility and CLI checks passed.
• The installed wheel executed the full FP32 model with the pinned 35-shard bundle on a synthetic HU NIfTI chest volume. It generated a nonempty two-token response terminating at EOS and wrote report.txt, model_response.json and run.json (45.97 seconds, 22.75 GB peak MLX memory). This is an inference smoke check, not report accuracy, full-model parity or clinical validation.
• Publication scan found no blockers; the only warning was a generated token ID, not a credential.

Known pre-existing QA backlog: make qa stops on 144 Ruff findings; strict Pyright reports 161 errors. These remain visible and are not suppressed by this packaging release.