Add non-generic decoration overloads and keyed support

Update dotnet CI workflow permissions and branches

Refactor generator helpers, cache analyzer result

Refactor analyzer to use ITypeSymbol for service types

Refactor registration merging and clean up usings

Add EquatableArray.Merge for efficient merging of arrays. Refactor ServiceRegistrationGenerator to use Merge and collection expressions. Remove unused using directives and improve code readability with minor renaming and style updates.

Add decorator registration support with compile-time validation (#303)

* Add decorator pattern support to source generator

Adds RegisterDecoratorAttribute (non-generic and generic variants) for
wrapping existing service registrations with decorator classes. The
generator emits a self-contained runtime helper (Injectio.Decoration.g.cs)
so no new package dependencies are introduced.

- Supports chaining via Order (lower = innermost)
- Supports keyed decoration, AnyKey, open-generic (closed instances),
  factory-built decorators, and tag filtering
- Adds diagnostics INJ0010-INJ0016 for decorator validation
- Runtime helpers use ActivatorUtilities for DI-friendly construction

https://claude.ai/code/session_01DFMTsCCwsWoYM7vWumE6mw

* Refactor generators: models, pipeline & infra

* progress

* bug fixes

* Update Extensions.cs

* Delete Injectio.Attributes.csproj

* Delete REFACTOR_PLAN.md

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Co-authored-by: Claude <noreply@anthropic.com>

Skip service type validation when factory specified

Update dotnet.yml

Enable central package management for dependencies

Merge pull request #219 from loresoft/dependabot/nuget/Verify.Xunit-2…

…9.4.0

Bump Verify.Xunit from 29.3.1 to 29.4.0