Slate v2 exported transform signatures should match runtime optionality

What happened

The runtime and docs had already moved delete(...), wrapNodes(...), unwrapNodes(...), and liftNodes(...) to optional at / optional options.

But the exported Transforms TypeScript surface still typed some of those options as required.

That is exactly how a core surface looks “done” in code review while still lying to consumers and agents.

What fixed it

The exported TransformsApi signatures were aligned with the actual runtime:

• delete(options?)
• liftNodes(options?)
• wrapNodes(..., options?)
• unwrapNodes(options?)

Reusable rule

For Slate v2 public API freeze work:

• exported TS signatures must match the callable runtime surface exactly
• docs/runtime parity is not enough if the types still lie

If the type layer says “required” while the runtime says “optional”, the API is not frozen. It is inconsistent.