Static toolkit

The static side of Result: helpers that operate directly on bare leaves — no wrapping involved — and throw a ResultError when handed the wrong variant. They are the deliberate escape hatch out of the type-safe flow.

• Result.unwrap(r) — the Ok value; throws on a Bad.
• Result.unwrapOnlyOk(r) — like unwrap, but typed to accept only an Ok.
• Result.unwrapBad(r) — the Bad leaf; throws on an Ok.
• Result.unwrapBadReason(r) — the failure's reason tag.
• Result.unwrapBadValue(r) — the failure's value payload.
• Result.matchBad(r, map) — dispatch on the tag, one handler per reason, each seeing the payload typed for that tag. Requires a Bad: narrow the Ok away first (a still-possible Ok is a compile error at the call site).

See 02 — Form validation (matchBad) and 04 — Domain operation for the toolkit in context.