Vigil

Vigil is the pipeline completion monitor born from a specific failure: 36 episodes were discovered stuck in processing for up to 11 weeks because no agent was checking whether the async Mux-to-Inngest-to-Gemini transcription pipeline actually completed. Vigil queries Sanity for episodes with transcriptionStatus stuck beyond thresholds (processing > 24 hours, pending > 48 hours, any failed state) and produces structured health reports with exact episode titles, show names, and stall durations. Vigil proves a core operational principle: every async dispatch needs a completion verifier. Fire-and-forget at the dispatch is fine, but something must check the other end.