Styles, delay, more progressions/drums, a song verifier, IDB cache, mobile

Big musical + good-loop expansion (engine verified: ALL PASS, 30+ native renders).

• 15 chord progressions (added pop/synthwave/andalusian/neosoul/lofi/canon/...).

• 4 STYLE presets — vaporwave / synthwave / downtempo / lo-fi — that recast the whole song (tempo, reverb, delay, instruments, progression, drum/bass/melody).

• Delay bus (instr 98) routed per-instrument like reverb (delay send per synth; global delay time/feedback/cutoff).

• 8 drum kits (added four/boombap/halftime/trap) with a fill on the last bar of each cycle (4-bar development).

▶ Play it: Highway Heat Death → Food Court Eternity → Dust Census — the three genres this change names, as one path https://stellate.app/?genre=synthwave&seed=3806&path=859.9931,1679.4415,263.9071&xdur=0.131

726d06d https://github.com/aboard-io/stellate/commit/726d06de8c18d59df6de174929c97889195796ee