M-Iswarya2/AI-DataScientist ? reverse-engineered prompt

Build me a web app for uploading a CSV dataset and walking through the full data science workflow in a simple, visual way.

I want the app to summarize the dataset, show missing values, constant columns, high cardinality columns, basic stats, correlations, and outliers, then help detect a likely target column and decide whether the task is classification or regression. After that, it should preprocess the data, train a few different models for the detected problem type, compare their results, and show the best one.

It should also generate a few useful charts like scatter, line, bar, histogram, box plot, and a correlation heatmap, but only when the selected columns actually make sense for that chart.

Please include a clean frontend where I can upload a file and inspect each step, and a backend that handles the analysis, plotting, preprocessing, model training, and evaluation. If you need to check current docs or best practices while building it, go ahead and look them up online.