Latest Try 3

From the 2026 AI agent config guides: LLM-generated files give negative returns with worse performance at higher cost, while human-curated files yield roughly a 4-percentage-point improvement, making writing manually worth the overhead. Rules should respond to observed failure, not be generated speculatively. Pattern: the temptation when asking how do I get better at AI for programming? is to ask the LLM. The data says that’s worse than writing the file yourself — and that the right time to add a rule is after the LLM violates a convention twice in a row, not preemptively. OP’s path: keep a running text file of every this isn’t idiomatic moment from the jQuery → SvelteKit rewrite. After 2 weeks the file becomes the personal AGENTS.md, hand-curated, ~50 lines, that the next LLM session reads first.