skillset v0.1.0-beta.7

Beta release for the near-term core/library stack.

Highlights:

• Adds the private @skillset/core workspace package and begins moving compiler operations behind structured core APIs.
• Adds core operation result types and CLI rendering boundaries.
• Introduces the typed feature registry, adapter capability evidence, and lowering outcome model/collection.
• Adds deterministic projection and normalized output-tree comparison foundations.
• Applies the self-hosted Skillset release state for pending source changes.

Verification:

• bun run check: 439 tests passing, skillset lint/check clean, Ultracite doctor clean.
• bun run hooks:pre-push: passed on main push.
• npm published: skillset@0.1.0-beta.7 under the beta tag.