I think you forgot the name in your sentence

Does it import transactions from your bank? Or is that all manual?

There is Homebox for keeping a list of things you have (and what they are worth) for things like insurance claims.

There is Audiobookshelf for your audiobook collection

There is wanderer for hiking and biking trails

How do I discover your code if it is on a selfhosted repo? On GitHub I can just search for keywords and find interesting projects.

It is not „for the greens“ it is for Germany. The environment does not have any political interest.