docs(libraries): add library manifest and discovery index

Co-Authored-By: Svrnty Inc. <jp@svrnty.io>

.library-manifest.yaml

@@ -0,0 +1,14 @@
+name: dotnet-cqrs
+description: Modern CQRS framework for .NET with gRPC source generation and HTTP Minimal API support
+owner: mathias@svrnty.io
+layer: L3
+stack: C# 14/.NET 10
+status: stable
+dependencies: []
+dependents:
+  - flutter_cqrs_datasource
+  - a-gent-app
+entry_points:
+  readme: README.md
+  registry: null
+  schemas: Svrnty.CQRS.sln

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
+- `.library-manifest.yaml` for cross-repo discovery and dependency tracking
 - Initial project setup
 
 ### Changed