Cloud Diagrams, K8s Sizing and Security Tools — H2 Batch Guide

Nine new client-side tools round out the H2 cloud and security batch:

Architecture diagrams

• AWS Architecture Diagram — EC2, S3, Lambda palette + SVG export
• Azure Architecture Diagram — VM, App Service, AKS blocks
• GCP Architecture Diagram — GKE, Cloud Run, GCS palette

All three share a lightweight grid SVG engine in lib/cloud-diagram/ — no dagre, no uploads.

Data & ops

• ER Diagram Generator — paste CREATE TABLE DDL, get FK lines
• Kubernetes Resource Calculator — CPU/memory hints + Deployment YAML
• AWS Pricing Calculator — static list prices with Chart.js breakdown

Security & networking

• TLS Handshake Simulator — animated TLS 1.2 flow, zero network
• Webhook Tester — POST to localhost or public URLs via proxy
• GPG Symmetric Encryption — AES-GCM armored blocks (not gpg -d compatible)

Everything runs in the browser. Start with the tool that matches your task and export or copy results locally.