PDF search program. Breaking down PageIndex, Streamlit, and page links

"The warranty period is 18 months" is a nice answer, but what if the contract says 12? The author examines a PDF search program based on PageIndex and Streamlit that shows links to pages. The idea is that the model's answer can be verified against the original source. In a chat, such errors are hidden, but here each link leads to the right place in the document. Practical benefit: you can build such a tool yourself and check whether the model made up a number. This is not magic, but careful work with page indexing.