randomly reorder "latest from follows" each day.

[MaxBittker]

I love the "latest from follows" feed. It reminds me to reach out to friends who don't post constantly, feels like an antidote to modern social media.

This is an attempt at improving it, so it shows different content every day.

Caveat:
Testing this was a bit dicey, it seems to work but my VPS was struggling to keep up with the firehose, and I haven't used gorm before.

There was some behavior (caching maybe?) that I wasn't totally understanding, so a gut check on this code would be appreciated.

I think that this janky prng hash should be enough to keep the feed feeling fresh.

here's a similar "hash" function in desmos:
https://www.desmos.com/calculator/ty7o52ayhh

[MaxBittker]

I think that this sorting clause is not correct yet

[MaxBittker]

ok, after fixing a few issues this new hash seems to work! I had to do it without sin because the go sqlite driver seems to not support it, so we're hashing with multiplication and modulus

[MaxBittker]

I think this would also benefit from another compound index on follows?