Potential experiments

fix(worker): rebuild the deletion queue and cancel system dms

fix(api): gate stream keys by channel type and cover previews

fix(api): handle bad manifests, unfurl errors and the apns key

fix(api): correct webhook dedupe and the instatus transforms

fix(api): batch connection reorders, dispatch on failed recheck

fix(api): correct user content, read state and harvest paths

fix(api): correct report targets and ticket handling

fix(api)!: correct pagination and locking, drop toggle routes

fix(api): reject unparsable bodies and screen non-form ones

fix(api): reject unparsable bodies and screen non-form ones

fix(api)!: enforce declared rate limits and correct route auth

fix(api): raise coded errors for prerequisites and bounds

fix(auth): correct mfa errors, sudo methods and birth dates

fix(api): correct guild permission and mfa checks

fix(media-proxy): correct route errors and test the ip gate

fix(media-proxy): bound the relay body and drop the unread ttl

chore(gateway): delete modules with no callers

fix(gateway): return precise rpc errors and bound snowflakes

fix(gateway): close oversized bot identify with code 4011

feat(gateway): add an undrain endpoint and sweep orphan tables