[release] Release Highlights: v0.3.19

[github-actions]

Release highlights generated for v0.3.19 of MCP Gateway.

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🌟 Release Highlights

This release focuses on security hardening, observability improvements, and documentation clarity — keeping MCP Gateway reliable and easier to operate.

✨ What's New

• Improved DIFC security coverage — Closed GitHub guard gaps for search_commits and the feature-flagged list_issues variant, ensuring consistent information flow control across more MCP tools. (#6432)

• Standardized JSONL telemetry — Gateway RPC log records now include event and _schema fields with millisecond-precision timestamps, making structured log analysis and tooling integrations more reliable. (#6485)

• Rust guard integrity constants — Magic integrity strings in the Rust guard are replaced with named constants, reducing the risk of misconfiguration and improving maintainability. (#6470)

🐛 Bug Fixes & Improvements

• OpenTelemetry tracing fix — The OTEL_SERVICE_NAME environment variable now correctly overrides the tracing service name at runtime, ensuring traces are attributed to the right service. (#6344)

📚 Documentation

• Config examples are now directly linked from the Quick Start guide and configuration reference, making it easier to get started. (#6431)
• Guard-policy tag usage and stdin config behavior are clarified in the Quick Start. (#6434)

🐳 Docker Image

The Docker image for this release is available at:

docker pull ghcr.io/github/gh-aw-mcpg:v0.3.19
# or
docker pull ghcr.io/github/gh-aw-mcpg:latest

Supported platforms: linux/amd64, linux/arm64

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For complete details, see the full release notes.

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Generated by the release highlights workflow for v0.3.19. Workflow run: 26415884188.

Generated by Release · sonnet46 575.1K · ◷