qilong — software engineer, with interests in ai agents, llms, distributed systems, and cryptography.
qilong@mbp:~$ ls ./posts
current series · deep dive · claude code
2026-04-23
deep dive · claude code · part 3 — contextwhat's in the envelope every turn — the 200K/1M window, the 33K harness reserve, and how tool results dominate per-turn growth before compaction kicks in.
2026-04-21
deep dive · claude code · part 2 — the loopthe main agentic loop — six calls in a while(true), a walkthrough of one prompt, and how SSE events assemble text and tool calls on the wire.