Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, this project adheres to Semantic Versioning, commits follow Conventional Commits, and this changelog is generated by Structured Changelog.

Unreleased

v0.1.0 - 2026-04-15

Highlights

• Initial release of system-spec: a Go-native system topology specification
• Multi-format rendering: D2, Mermaid, Cytoscape.js, Sigma.js, GraphViz DOT

Added

• Core spec types: System, Service, GitRepo, ContainerImage
• AWS resource bindings: RDS, DynamoDB, SQS, SNS, S3, Bedrock
• GCP resource bindings: CloudSQL, PubSub, GCS
• Cloudflare resource bindings: Workers, R2
• Service connectivity modeling with protocol and port
• Deployment mappings for Helm charts and Terraform modules
• Graph intermediate representation for rendering
• D2 renderer with styled node shapes
• Mermaid renderer with provider subgraphs
• Cytoscape.js JSON renderer for web visualization
• Sigma.js JSON renderer optimized for large graphs
• GraphViz DOT renderer
• JSON Schema generation from Go types
• CLI tool: validate, render, schema, graph commands

Documentation

• Specification document v0.1.0 with full type definitions
• Example payments-system.json demonstrating all features