refactor: Update data analysis report format in Gradio application to use bullet points for key insights, enhancing clarity and readability in user interactions.

app.py

@@ -71,16 +71,8 @@ Your reply must be:
 
 Always reply in this Markdown structure, omitting sections that are not relevant:
 
-## Key Summary
-
-### Overview
-- 1–3 bullets on what you did this turn (e.g. analysis, training, deployment).
-
-### Dataset Shape & Target  (only if a dataset was analyzed)
-- 1–3 bullets about rows, columns, target variable, and class balance.
-
 ### Data Analysis (only if a dataset was analyzed)
-- Please provide a detailed data analysis report in two paragraphs.
+- Please provide a detailed data analysis report in bullet style, highlighting key insights.
 
 ### Model Performance  (only if a model was trained)
 - 1–3 bullets with key metrics (e.g. Accuracy, F1, ROC-AUC).