Network database server package for SharpCoreDB.

Version: v1.9.1
Package: SharpCoreDB.Server

• ✅ Aligned package metadata and version references to the synchronized 1.9.1 release line.
• ✅ Release automation now publishes all packable SharpCoreDB packages in CI/CD.

• gRPC-first protocol stack (HTTP/2 + HTTP/3)
• HTTPS REST API and WebSocket streaming support
• JWT auth, RBAC, TLS 1.2+, optional mTLS
• Multi-database hosting and production operations support

• Package/docs synchronized to v1.9.0
• Documentation aligned to production server capabilities
• Companion client/SDK guidance updated for current release line

dotnet add package SharpCoreDB.Server --version 1.9.0

• docs/INDEX.md
• docs/server/README.md
• src/SharpCoreDB.Server/NuGet.README.md