docs: add 2.2.0 release notes

planning/releases/2.2.0.md

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+# modern-di-typer 2.2.0 — adopt modern-di's blessed `resolve_dependency` seam
+
+No API change. `_resolve_di_params` now dispatches through modern-di's
+`Container.resolve_dependency(...)` instead of the local
+`isinstance`-on-`AbstractProvider` check, and the `modern-di` floor moves to
+`>=2.25.0,<3` to require it. Backward compatible — no action required to
+upgrade.
+
+## Internals
+
+- **`resolve_dependency(...)` replaces the local dispatch.** modern-di 2.25
+  ([modern-python/modern-di#283](https://github.com/modern-python/modern-di/pull/283))
+  blessed a single provider-or-type resolve entry point for integrations;
+  `_resolve_di_params` now calls it directly instead of branching on
+  `isinstance(marker.provider, providers.AbstractProvider)` and choosing
+  between `resolve_provider`/`resolve` itself. Same behavior — overrides,
+  caching, scope checks, and "did you mean" suggestions are inherited
+  unchanged from the underlying paths.
+- `modern-di` floor bumped from `>=2.19.0,<3` to `>=2.25.0,<3` to require the
+  new method.
+- `architecture/injection.md` updated to describe the call-time resolution
+  step in terms of `resolve_dependency(...)`.
+
+## Downstream
+
+No action required. `FromDI(provider)` still accepts either a provider
+instance or a bare type; resolution behaves identically.