Build an app where a business owner uploads a CSV and asks questions in plain English to get charts and written insights. Numbered features: 1. CSV upload with automatic column type detection (number, date, text, category). 2. Data preview table with row and column counts and quick stats per column. 3. Ask-anything box: user asks questions like which product line grew fastest or which region has the worst margin, and the app answers with a short written summary. 4. Chart generation: the app picks and renders the right chart type (bar, line, pie, scatter) for each answer. 5. Saved questions list so users can build a recurring weekly metrics view. 6. One-click weekly summary report by email. 7. Data cleaning helpers: flag duplicate rows, missing values, and date gaps before analysis. 8. Export any chart as PNG and any summary as Markdown. Use an AI app builder with file upload, AI reasoning over structured data, and a charting component.