Ring-out + delay: give the dreamy guitar genres real tails

The taste pass for 'power chords with long fuzzy reverb tails phasing in and out, MBV levels of processing' — on the RING-CLASS guitar/string genres only (moonlagoon, budstep, meadowmellotron, walrusfuzz, surfrock, desertblues, meadowjangle, flannelburst, chromeufo)

• Also fixes a latent bug: 'delay' was a working state-engine module but was never registered in the kernel's INSERT_DEFAULTS, so any pool-declared delay was silently dropped catalog-wide

▶ Play it: Undertow Sock Hop → Dune Recursion → Amen Monolith — the three genres this change names, as one path https://stellate.app/?genre=surfrock&seed=4327&path=1315.6203,945.16205,1089.13532&xdur=0.075

3a1ab70 https://github.com/aboard-io/stellate/commit/3a1ab70fdecc5beef6b6c466e5776bc06158242f