Building an Agent from 0 to 1: Principles and Personal Assistant Practice

从0到1搭建 Agent ：Agent 原理分析及个人助手实践（长文干货）

Zhan Xupeng published a roughly 50-minute article on Agent theory and a personal assistant implementation, covering memory, ReAct planning, progressive skill loading, subagents, and harness-level fault recovery.

Why it matters: HKR-K/R pass via concrete agent mechanisms and practitioner reliability pain; HKR-H is weak because the headline is a standard tutorial frame. This fits the quality-tutorial threshold, not the 78+ news band.