Add README with Claude Code context path

Documents the macOS working directory and how to resume Claude Code sessions.

README.md

@@ -0,0 +1,18 @@
+# Security Tools
+
+A collection of security scripts versioned in this repository.
+
+## Claude Code Context
+
+This project is maintained with Claude Code. The working directory on macOS is:
+
+```
+/Users/petermarfleet/code/bin/security
+```
+
+To resume work in Claude Code from this directory:
+
+```bash
+cd /Users/petermarfleet/code/bin/security
+claude
+```