I don't think you should stress yourself out by viewing everything solely from a productivity perspective. I use Linkding and have bookmarks for everything that interests me. I see it more as a personal history or memory that I can refer back to. Linkding has a very good search function for this and can also be integrated into Google or SearxNG search results via a Chrome extension.
[crofflr dev here] The binary used by crofflr will still work and the currently used version is already years old. Alternatively it would be easy to switch to calibre based tooling.
To be fair it should be mentioned that only a first runway and a few improvised buildings were created in this time frame. The Tegel Airport of 1948 ist in no way comparable to a modern airport.
The runway at Tegel was built on military orders in 90 days in order to serve the Berlin Airlift - more of a life and death situation for the city than opening Brandenburg!