Notes

Engineering notes

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01 / ALL NOTES

Latest notes

10 notes, newest first.

Engineering · 2026-08-31

Git and GitHub core concepts

A structured guide to Git version control, GitHub collaboration, branches, commits, merges, and practical workflows.

AI / Agent · 2026-08-31

Pi Agent engineering guide

An engineering walkthrough of Pi, from its npm monorepo and model abstraction to the agent loop and session storage.

AI / Agent · 2026-08-31

Pi Agent usage manual

A practical overview of Pi Agent: its minimal design, setup, plugins, skills, sessions, extensions, and security boundaries.

Testing · 2026-08-31

Playwright in depth

A structured overview of Playwright APIs covering navigation, content, actions, evaluate, element operations, and assertions.

AI / RAG · 2026-08-31

RAG beginner course notes

Beginner-friendly notes covering the full RAG path from indexing, retrieval, and generation to evaluation and modular RAG.

AI / Agent · 2026-08-30

Pi usage manual

A minimal coding agent with only four tools and a ~1000-token system prompt. MCP, subagents, and plan mode all come back through plugins; the trade-off is near-zero safety restrictions.

AI / Agent · 2026-08-30

Superpowers and harness engineering

An agent workflow plugin that locks acceptance criteria with spec + plan, clears context via subagents, and constrains coding with a TDD red-green loop — at the cost of multiplied time and token usage.