v0.4.0

Prebuilt artifacts:

• Image: ghcr.io/thejavapirate/model-context-stream:0.4.0 (amd64 + arm64)
• Chart: helm install mcs oci://ghcr.io/thejavapirate/charts/model-context-stream --version 0.4.0

Full Changelog: v0.3.0...v0.4.0