Fix persona IDs to match database and collapse diagnostics

CRITICAL FIX: The population network was only using 1 persona because the
persona IDs in the weight sliders didn't match the actual database IDs.

Fixed persona ID mappings:
- jennifer_roberts → james_obrien ✓
- david_park → david_kim ✓
- raj_patel → priya_patel ✓

Other fixes:
- Changed System Diagnostics expander to start collapsed (expanded=False)
- Updated display names to match actual personas

This should now correctly distribute the population across all selected personas.

Files modified:
- pages/3_🌐_Opinion_Equilibria.py: Fixed persona IDs and names
- web_app.py: Collapsed diagnostics by default

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

pages/3_🌐_Opinion_Equilibria.py

@@ -151,10 +151,10 @@ else:
         personas_list = [
             ("sarah_chen", "🌱 Sarah Chen"),
             ("marcus_thompson", "🏪 Marcus Thompson"),
-            ("jennifer_roberts", "👨‍👩‍👧 Jennifer Roberts"),
-            ("david_park", "🏗️ David Park"),
-            ("elena_rodriguez", "🚲 Elena Rodriguez"),
-            ("raj_patel", "🎓 Raj Patel"),
+            ("james_obrien", "👴 James O'Brien"),
+            ("david_kim", "🏗️ David Kim"),
+            ("elena_rodriguez", "🚲 Dr. Elena Rodriguez"),
+            ("priya_patel", "🏘️ Priya Patel"),
         ]
 
         for pid, name in personas_list:

web_app.py

@@ -115,8 +115,8 @@ initialization_error = None  # Store any error that occurs
 with st.sidebar:
     st.title("🤖 LLM Model")
 
-    # Diagnostics (always expanded for now to help debug)
-    with st.expander("🔍 System Diagnostics", expanded=True):
+    # Diagnostics (collapsed by default)
+    with st.expander("🔍 System Diagnostics", expanded=False):
         api_key = os.getenv("ANTHROPIC_API_KEY")
         st.write(f"**API Key Status:** {'✓ Found' if api_key else '✗ Missing'}")
         if api_key: