Opus is ridiculous for frontend cleanup
I love Opus. First I tuned one page, got the PageSpeed result where I wanted it, and wrote the whole thing down in `ADR_pagespeed-l0-fixes-playbook.md`. Then I opened a fresh session, gave it the remaining 9 pages, and pointed it at the playbook. Opus created three subagents by itself, split the work between them, and about 15 minutes later they had touched 41 frontend files that powered those pages. Same result across the set. Basically perfect Lighthouse numbers again. Not gonna lie, this is the kind of workflow where I stop thinking “chatbot” and start thinking “tiny frontend team tha...