AI Historical Graph & RNG Tool

I am putting together a small utility that does two things in one place:
1) plots a clean, interactive historical graph from a data file I upload, and
2) produces on-demand random numbers that I can copy or export for later use.

The interface can be a lightweight web page or a simple desktop script—whichever you feel lets you work fastest. The graph needs standard zoom, hover-to-see values, and the option to save the image as PNG or PDF. For the RNG side, I should be able to choose how many numbers I need, set the range, and press a button to get the output instantly. Saving the generated set as CSV will be helpful.

Ideally the two features share one clean UI and are wrapped in an AI-assisted layer so that, for example, a chat box can answer “Show me only the last 30 days” or “Give me 50 random integers between 10 and 100.” If you prefer to integrate an existing open-source LLM or use prompts that call Python functions, either way works for me.

Please base the core on familiar libraries (Python + Pandas/Plotly/Matplotlib, or Node + D3, or similar) so I can run or extend it later without a steep learning curve.

Deliverables
• Source code with concise setup instructions
• A brief README showing sample commands or UI clicks
• One demonstration dataset and a short screen capture confirming both features in action

I’m ready to review your approach and schedule right away; let me know what language or framework you’d like to use and how soon you can deliver the first working draft.