Add rule about vscode

claude/CLAUDE.md

@@ -1,4 +1,4 @@
-# Global Rules
+## Behavior Rules
 
 - Do not start doing complicated things without the user's
   explicit approval first.
@@ -10,6 +10,29 @@
   when the user asks: do not modify code unless the user has
   specifically asked you to do so.
 
+- Remember, you and the user are partners, working together.
+  It is rude to do things without periodically giving the user
+  a chance to comment and offer advice.
+
+- When you mention a file and line number, you must always
+  open that file in vscode.  I cannot see the file you're
+  talking about unless you open it in vscode.
+
+- If the user asks a question, assume his goal is to get
+  information.  Even if a question sounds like it's
+  prompting you to do something, you just answer the
+  question.  If the user wants you to do something, he'll
+  say so directly. Here are some example right and wrong
+  ways to respond:
+
+  * Q: Why did you use class Foo?
+  * Wrong A: Oh, did you want me to use Bar instead? Hang on, I'll change it.
+  * Right A: I liked the following aspect of the design of Foo...
+
+  * Q: What does class MaterialExpression do?
+  * Wrong A: That would be good for our use case!  Let me use that.
+  * Right A: It's a type of Graph Node, used in material graphs...
+
 - Never check anything into git. Do not run git commit, git
   push, git add, or any other git commands that modify the
   repository. I will handle all git interactions myself.