Amazon Order History Analyzer

For years I've been telling myself and my wife that we would be millionaires if we invested better than cut on Amazon spending and this is proof! I "coded" this in 4 hours, and by coding I mean I told Gemini what I wanted and helped with troubleshooting and deployment. Approximately it took around 100 back-and-forth cycles, starting from a prompt that had some basic idea. I had to debug myself to unblock just a few times: One because in some CSV files Amazons uses "Order ID" and in others "Order Id" and Gemini couldn't figure that out. Another one was to get the historical share price for which Gemini really wanted to use Yahoo, which doesn't work well due to CORS problems. I decided to just fetch the data as of today and add it as a static file in the repo.