Add dino-synth genre: tribal kit, creature solos, glitched paleo VO, Lost World video

A dinosaur-themed dungeon-synth anchor, built end-to-end through the generator → verifier loop and a planetarium-style video.

• `tribal` kit — full ritual percussion (galloping kicks, busy hand-hats + open-hat swells, quiet tom accents, no snare-roll)

• `fuzz` distorted lead voice + `roar` melody pattern + `primeval` progression

• per-section solo voices: any section with a `solo` recipe gets its own melody instrument (instr 7+), so different "dinosaurs" and a fuzz guitar each solo

• glitched voiceover handler: a speech phrase plays clean, then stutter/ pitch-jumps (slow-down only) with delay swelling in/out (instr 5 gains a per-event delay-send p-field; default preserved)

▶ Play it: Cretaceous Vespers — parked on the genre this change names https://stellate.app/?genre=dinosynth&seed=7326&path=289.13871,308.13904,270.13904&xdur=13.122

27d5780 https://github.com/aboard-io/stellate/commit/27d5780e0b4b0b8e019320edc8df02271bfadd08