Historically we would backdate the SN change messages, but since adopting
non-blocking SN changes long ago, they're already sorted properly by creation
time, so backdating has been unnecessary for a while.
I also audited that all other error messages are saved directly after creation.
I applied deprecation attributes as appropriate as I audited.
There is no change in functionality in this commit.
Apart from clarifying what the timestamp means (it's the timestamp of the
*sender*), this intentionally breaks all the call sites, so I could have a sane
way to thoroughly audit wherever we're passing in timestamps, to see where
we're depending on them to affect sort order.
For the sake of a cleaner diff of meaningful changes, instead of "fixing"
everything in this commit, I've just added comments and renamed signatures.
verify `description` isn't used elsewhere (notifications? conversation
view?)
Probably want to remove overzealous asserts for now, but would be good
to work towards leaving them enabled.
// FREEBIE
* Auto-add new contact threads to profile whitelist when local user sends first message to that thread.
* Ensure dynamic interactions have a non-negative timestamp even if the conversation was empty.
* Only call updateMessageMappingRangeOptions _after_ beginLongLivedReadTransaction and updating messageMappings.
* Improve documentation around how to avoid corrupt mappings in conversation view.
* Fix edge cases around large initial range sizes.
* Always treat dynamic interactions as read.
* Rebuild the “unseen” database views to remove dynamic interactions (see above).
// FREEBIE
