Cover is reused Volt alley card art from examples/gallery/combine-images/preview.webp (wet neon alley), pending a true ElevenLabs Sound Effects V2 QC sting — no paid elevenlabs/sound-effects/v2 or NanoGPT run this PR. Job is a ~4s Volt night-ride radio sting: wet neon alley pulse, radio static bloom, one electric-cyan thunder hit, tight decay. Distinct from Closing-credits song (sing / Mureka generate-song) and TTS / voice. Not a video Keep. Open the graph — SFX brief is the Volt sting sentence; Sting pins elevenlabs/sound-effects/v2 at duration 4 (~$0.008). No music bed, vocals, or dialogue. No upload. No LLM.