CLAUDE.md: act first, read less — stop over-researching before acting

ober

0a5f1dc12b8f9e63e0a763a2fede78af93df72b4

diff --git a/CLAUDE.md b/CLAUDE.md
index 978d69c..a89aec2 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -48,3 +48,11 @@ src/jcode/
 ## Language
 
 This is Jerboa Scheme compiled by jerbuild. Files are `.ss`. Never write `.sls` — those are generated output in `lib/`. See `~/.claude/CLAUDE.md` for the full Jerboa language reference.
+
+## Act First, Read Less
+
+When making changes, read only what you need to make the edit, then make it.
+Do not read more than 3 files before acting. Do not re-read files you already
+read. Do not verify things you already know. If you have enough context to make
+a change, make it. The user will interrupt you if you are wrong.
+