llm-friendly readme, name fix

README.md

@@ -47,8 +47,13 @@ subdirectory still finds the right one.
   cache/       # scratch space on the host, gitignored (dependencies, downloads…)
   .env         # secrets, kept out of git (.env.example shows the format)
   version      # the safeclaude version this config was created with
+  README.md    # how this environment works and how to change it
 ```
 
+That `README.md` is also what the sandboxed Claude reads to learn how the
+environment is set up — so it can tell you exactly what to change without
+digging through your project.
+
 A few things worth knowing:
 
 - **Two places setup can live, and the difference matters.** Slow, one-time