docs(release): add 2.3.0 release notes

planning/releases/2.3.0.md

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+# modern-di-typer 2.3.0 — adopt the modern-di integration kit
+
+Maintenance release. **No public API change** — `FromDI`, `inject`,
+`action_scope`, `fetch_di_container`, and `setup_di` keep their signatures
+and behavior. Swaps this package's hand-rolled `FromDI` marker and its
+parse/resolve pair for the shared primitives in
+[`modern_di.integrations`](https://github.com/modern-python/modern-di/blob/main/architecture/integration-kit.md),
+shipped in
+[modern-di 2.28.0](https://github.com/modern-python/modern-di/releases/tag/2.28.0).
+Seventh of 13 planned adapter conversions across the `modern-di` ecosystem
+(after
+[`modern-di-starlette` 2.2.0](https://github.com/modern-python/modern-di-starlette/releases/tag/2.2.0),
+[`modern-di-fastapi` 2.10.0](https://github.com/modern-python/modern-di-fastapi/releases/tag/2.10.0),
+[`modern-di-litestar` 2.13.0](https://github.com/modern-python/modern-di-litestar/releases/tag/2.13.0),
+[`modern-di-aiohttp` 2.2.0](https://github.com/modern-python/modern-di-aiohttp/releases/tag/2.2.0),
+[`modern-di-flask` 2.1.0](https://github.com/modern-python/modern-di-flask/releases/tag/2.1.0),
+and
+[`modern-di-faststream` 2.10.0](https://github.com/modern-python/modern-di-faststream/releases/tag/2.10.0)).
+First conversion where the kit's Layer 1 (`bind`/`classify_connection`) has
+nothing to attach to at all — a CLI invocation has no connection object
+analogous to a web `Request` or broker `StreamMessage`. This is a
+**Layer-2-only** conversion.
+
+## Internal refactors
+
+- **`_FromDI` is gone; `FromDI = integrations.from_di`.**
+- **`_parse_inject_params` keeps its hand-rolled `typer.Context`-detection
+  scan** (the kit has no equivalent for this typer-specific concern) **but
+  delegates marker-finding to `integrations.parse_markers`.**
+- **`_resolve_di_params` is gone; `inject`'s wrapper calls
+  `integrations.resolve_markers` directly.**
+- Dead imports removed: `dataclasses`, `providers` (this repo has no
+  module-level connection provider, unlike every prior web/broker
+  conversion), and the `T_co` TypeVar.
+- `architecture/injection.md` promoted; `architecture/scopes.md`
+  deliberately left untouched (it describes the App/Command/Action
+  container hierarchy behaviorally and names none of the changed
+  internals).
+
+## Packaging
+
+- Bumps the `modern-di` floor to `>=2.28.0,<3`.
+
+## Downstream
+
+No action needed — the public API (`FromDI`, `inject`, `action_scope`,
+`fetch_di_container`, `setup_di`) is unchanged. Upgrading only requires
+`modern-di>=2.28.0`.
+
+## Internals
+
+- 100% line coverage; `ruff`, `ty` clean across Python 3.10–3.14.
+- Built via `subagent-driven-development`: 4 planned tasks, each with an
+  independent spec+quality review; a whole-branch review before merge.