Apply Filter to new Cards

If a filter is applied new cards should automatically get the same tags, assigned people, etc.

Some examples from my day-to-day work with Deck.

I use deck as my personal task manager. Tasks which belong to different projects are tagged accordingly ("project 1", "project 2"). In the past I had for each project a dedicated Deck board but this didn't really scaled at the end and it was hard to have a joint overview over all current tasks.

When I want to focus on tasks of "project 1" I apply the filter accordingly. If I now add a new card, the card directly disappears after creation because it doesn't has the tag "project 1". If I create new card while focusing on "project 1" I would like that the new card gets directly the same tag.

The Sales Engineering Team at Nextcloud has a shared Deck board to keep an overview over currently running projects. Cards are assigned to the responsible Sales Engineer. Same as above, if I filter for myself and add a new card, the card disappears directly after creation because it is not assigned to myself. I have the disable the filter, find the card in a huge list of cards and assign it to me. If I look at my cards and create a new one, it is quite likely that it is also a card for me. Therefore it would be nice if all filters would be applied and the cards would be assigned automatically to myself.

No files, tests, or entry points are named. Start by tracing the new-card creation flow and how active filters represent tags and assignees; done means a card created under a filter receives the applicable filter values and remains visible without disabling the filter.