* don't set emoji / media image paths on failed download, migrate FileType from string to integer
* fix incorrect uses of util.PtrOr, fix returned frontend media
* fix migration not setting arguments correctly in where clause
* fix not providing default with not null column
* whoops
* ensure a default gets set for media attachment file type
* remove the exclusive flag from writing files in disk storage
* rename PtrOr -> PtrOrZero, and rename PtrValueOr -> PtrOrValue to match
* slight wording changes
* use singular / plural word forms (no parentheses), is better for screen readers
* update testmodels with unknown media type to have unset file details, update attachment focus handling converting to frontend, update tests
* store first instance in ffmpeg wasm pool, fill remaining with closed instances
A note on when we should set data structures linked to objects in the database to use the
bun nullzero tag -- this should only be done if the member type is a pointer, or if the
this primitive type is literally invalid with an empty value (e.g. media IDs which when
empty signifies a null database value, compared to say an account note which when empty
could mean either an empty note OR null database value).
Obviously it is a little more complex than this in practice, but keep it in mind!