2.9.0

modern-di-fastapi 2.9.0 — modern-di 2.25 integration seams

Maintenance release. No public API change — setup_di, FromDI,
build_di_container, and the context providers keep their signatures and
behavior. It adopts modern-di 2.25's blessed integration seams and raises the
floor.

Internal refactors

• container.add_providers(...) replaces the providers_registry reach-in.
  build_di_container registered _CONNECTION_PROVIDERS by poking
  container.providers_registry.add_providers(...) directly; it now calls the
  public container.add_providers(...) seam.
• container.resolve_dependency(...) replaces the copy-pasted marker
  dispatch. Dependency.__call__ used to branch on
  isinstance(self.dependency, providers.AbstractProvider) to choose between
  resolve_provider and resolve itself; that dispatch now lives in modern-di's
  own resolve_dependency, so FromDI no longer duplicates logic modern-di
  maintains.

Packaging

• modern-di floor raised to >=2.25,<3 (was >=2.21.0,<3). The seams
  above (Container.add_providers, Container.resolve_dependency) were added
  in modern-di 2.25.0 (modern-python/modern-di#283).

Downstream

Requires modern-di>=2.25. There is no API or behavior change, so
application code that uses setup_di / FromDI needs no edits — only the
modern-di floor moves.

Internals

• 100% line coverage maintained; ruff, ty, and eof-fixer clean.
• architecture/container-lifecycle.md and architecture/dependency-resolution.md
  updated to describe the new seams.