ci.yml: lint, test, build on PRs to main. release.yml: multi-platform binaries + Docker image on version tags. Targets: linux/amd64, linux/arm64, darwin/amd64, darwin/arm64, windows/amd64. Docker pushed to ghcr.io/smart-mcp-proxy/synapbus. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>