Reword labels as questions for better UX

- 'How specific should categories be?'
- 'What should categories be focused around? (optional)'

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

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

app.py

@@ -861,14 +861,14 @@ with col_input:
         )
 
         specificity = st.selectbox(
-            "Category Specificity",
+            "How specific should categories be?",
             options=["Broad", "Moderate", "Narrow"],
             index=0,
             help="Broad = general themes, Moderate = balanced detail, Narrow = highly specific categories"
         )
 
         focus = st.text_input(
-            "Focus (optional)",
+            "What should categories be focused around? (optional)",
             placeholder="e.g., 'decisions to move', 'emotional responses', 'financial factors'",
             help="Guide the model to prioritize extracting categories related to this focus"
         )