Add repo CLAUDE.md to auto-run setup for new users

When users clone the repo and run `claude`, it now automatically
offers to run the setup script instead of requiring manual steps.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,33 @@
+# AI Therapy Starter Kit - Setup
+
+You are helping a user set up their AI therapy environment.
+
+## On First Message
+
+Run the setup script immediately:
+
+```bash
+./setup.sh
+```
+
+For Windows users, run `.\setup.ps1` instead.
+
+After setup completes, tell the user:
+
+1. Their therapy folder has been created (show them the path from setup output)
+2. To start a session, they should:
+   ```
+   cd ~/ai-therapy   # or their chosen path
+   claude
+   ```
+3. That's it - just talk to their AI therapist
+
+## If Setup Already Complete
+
+If the user has already run setup and returns here, remind them to `cd` into their therapy folder and run `claude` from there. This repo is just for installation.
+
+## If User Asks Questions
+
+- Point them to `docs/GETTING-STARTED.md` for detailed instructions
+- Point them to the README for feature overview
+- For issues, direct them to GitHub Issues