Notes

Short notes on learning AI, building tools, and turning ideas into practice.

Aug 13, 2026

Building qiannawang.com: A Full-Stack Personal Portfolio Case Study

Experience + tutorial: building a CMS-backed portfolio — tone, stack, Supabase, Vercel, SEO/GEO, and analytics.

Aug 10, 2026

Aliyun ECS Deployment Guide: Docker Compose Single-Container Apps

Deploy a Docker Compose web app on Aliyun ECS: mirror setup, security groups, Baota reverse proxy with HTTPS, and optional GitHub Actions.

Jul 23, 2026

Building an AI Video Downloader & Summarizer with Cursor

A practical path from yt-dlp download to AI summary and Stripe membership—with reusable prompts and the decisions that keep the build on track.

Sep 21, 2026

Environment & Infrastructure: A Practical Guide to Models, Agents & Guardrails

A calm, practical guide (updated September 21, 2026) for setting up an AI engineering stack. Compares mainstream models (Claude Sonnet / Fable, GPT Sol / Astra, Gemini 3.8, DeepSeek-V4, Qwen3.8, Kimi K3), evaluates leading coding agents (Cursor, Trae, Copilot, Claude Code, Cline, Kiro), and establishes foundational workflow guardrails.