v50.0.0

50.0.0 (2026-04-30)

• feat(provider)!: replace Cache abstraction with direct key function in singleton() (2fb3e86)

BREAKING CHANGES

• singleton(cacheProvider) now takes (getCacheKey: (...args) => string | symbol)
  instead of () => Cache. Remove imports of Cache, MultiCache, multiCache.

Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com