[release] Release Highlights: v0.3.6

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🌟 Release Highlights

This is a quality-focused maintenance release for MCP Gateway v0.3.6, emphasizing code reliability, performance improvements, and test coverage across the codebase.

⚡ Performance Improvements

• Faster Rust guard processing: Eliminated redundant clones in extract_mcp_response and first_matching_scope, reducing memory allocation overhead in guard evaluation (#5103)

🔧 Reliability & Code Quality

• Unified session timeout handling: MCP_GATEWAY_SESSION_TIMEOUT lookup is now deduplicated into a shared getSessionTimeout() helper, ensuring consistent behavior across routed and unified server modes (#5100)
• Cleaner server handler construction: Extracted buildMCPHandler to eliminate duplicated handler setup logic across server modes (#5101)
• Streamlined utilities: generateRandomID inlined, truncation delegated to strutil, and loadEnvFile moved to envutil — reducing coupling and improving reuse (#5104)
• Fixed Rust guard compile error: Resolved unused import error in labels/mod.rs that could prevent guard compilation (#5089)

🧪 Test Coverage

• Improved CI reliability: Integration test timeouts increased for Docker image pulls, reducing flaky test failures in CI environments (#5118)
• Expanded sys package tests: Added success-path coverage for CheckPortMapping, CheckStdinInteractive, and CheckLogDirMounted (#5077)
• Tracing config tests: Improved test coverage for the config tracing package (#5076)
• Idiomatic testify usage: Refactored assertions across the test suite to use specific testify methods for clearer failure messages (#5102)

📚 Debug Observability

• DIFC label debug logging: Added structured debug logging to difc/labels.go to improve traceability of label evaluation during development and troubleshooting (#5069)

🐳 Docker Image

The Docker image for this release is available at:

docker pull ghcr.io/github/gh-aw-mcpg:v0.3.6
# 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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