Update sidebar introduction with new professional bio and tool description

src/app.py

@@ -56,6 +56,29 @@ if not st.session_state.setup_complete:
 
 # Sidebar with setup form
 with st.sidebar:
+    st.markdown("""
+    ### Welcome! 👋
+    
+    Hi, I'm Jocelyn Skillman, LMHC — a clinical therapist, relational design ethicist, and creator of experimental tools that explore how AI can support (not replace) human care.
+
+    Each tool in this collection is thoughtfully designed to:
+
+    - Extend therapeutic support between sessions
+    - Model emotional safety and relational depth
+    - Help clients and clinicians rehearse courage, regulation, and repair
+    - Stay grounded in trauma-informed, developmentally sensitive frameworks
+
+    I use Claude (by Anthropic) as the primary language model for these tools, chosen for its relational tone, contextual nuance, and responsiveness to emotionally complex prompts.
+
+    As a practicing therapist, I imagine these resources being especially helpful to clinicians like myself — companions in the work of tending to others with insight, warmth, and care.
+
+    #### Connect With Me
+    🌐 [jocelynskillman.com](http://www.jocelynskillman.com)  
+    📬 [Substack: Relational Code](https://jocelynskillmanlmhc.substack.com/)
+    
+    ---
+    """)
+    
     st.markdown("### 🎯 Simulation Setup")
     
     with st.form("simulation_setup"):