WIP: SN 0.5.6 -> 0.5.7 -> 0.5.8

[durban]

trafficstars

Notes so far:

• [ ] ~~There is something weird going on with exception stacktraces; I haven't been able to minimize so far. UPDATE: seems to work fine in CI, so possibly something is broken in my local environment.~~
• [ ] ~~ioAppTestsNative fails on macos-14 and ubuntu-22.04-arm~~