Post series

Some subjects need a path, not a single post. These series collect related write-ups in the order they make the most sense to read.

Active series

Home-health routing system, domain model, compliance, tenant isolation, workflow states, vehicle routing, ML scoring, and async delivery.
Auth and browser security, browser boundaries, auth-token placement, stateless auth, rate limiting, and prompt-injection failures.
Software design principles, SOLID, composition, and concrete concurrency patterns.
CS reference sheets, compact algorithm and data-structure references.

Engineering Guardrails for AI Systems, a 14-part guide to threat models, prompt injection, enforceable tool boundaries, MCP and agent controls, security evals, causal tracing, and incident response.
Modern React development, a 40-part sequence from component fundamentals through React 19-era Actions, Server Components, Next.js, React Router, TanStack, Expo, testing, tooling, accessibility, security, and production operations.
Zero to iOS Hero, a production-shaped path from Swift and Xcode through SwiftUI, UIKit, architecture, testing, shipping, Apple platform capabilities, and complete app case studies.
Domain-Specific Languages in Practice, a research-backed guide to DSL definitions, concrete examples, gotchas, tooling, business value, calculator-based evaluation, and production operation.
MCP Server Design, a nine-part guide to protocol layers, capability design, TypeScript implementation, client consumption, model interaction, and remote operation.
Coding Agent Internals, a clean-room guide to terminal agent loops, context assembly, tool contracts, permission gates, hooks, subagents, MCP, evals, and containment.