Python Website Menu & History Update with same flow

My site, comptek.in, is already running smoothly on a Python stack, but it needs a quick refresh. I want the Product menu to include one additional category—Software—while keeping the existing layout and navigation exactly as they are. No other categories or search functions are required at this stage; the change is simply an extra top-level entry that behaves like the current ones.

The History section also needs to move forward. Right now it stops at 2020; I will supply the text for 2021 through 2026, and those six new years have to slot into the same visual flow so visitors can scroll seamlessly from the early years right up to 2026.

Please work against the existing codebase, reuse the current styling, and limit database or model changes to what is strictly necessary for the new Software category and the extra History records. When you finish, I need the updated Python files, any modified templates, and a brief note of where you touched the code so I can merge it into production without surprises.