fathom-upgrade-migration

# Fathom Upgrade & Migration ## Overview Fathom is an AI meeting assistant that records, transcribes, and summarizes meetings. The API operates under `/external/v1` and exposes endpoints for meetings, transcripts, and action items. Tracking API changes is important because Fathom iterates rapidly on transcript schema fields (speaker attribution, sentiment data, highlight clips) and breaking changes to response shapes can silently corrupt downstream integrations that consume meeting data for CRM sync or analytics pipelines. ## Version Detection ```typescript const FATHOM_BASE = "https://api.fathom.video/external/v1"; interface FathomVersionCheck { apiVersion: string; knownFields: string[]; detectedFields: string[]; newFields: string[]; removedFields: string[]; } async function detectFathomApiChanges(apiKey: string): Promise<FathomVersionCheck> { const res = await fetch(`${FATHOM_BASE}/meetings?limit=1`, { headers: { Authorization: `Bearer ${apiKey}` }, }); const data = await res.json(); const knownFields = ["id", "title", "created_at", "duration", "attendees", "transcript_url"]; const detectedFields = data.meetings?.[0] ? Object.keys(data.meetings[0]) : []; return { apiVersion: res.headers.get("x-api-version") ?? "v1", knownFields, detectedFields, newFields: detectedFields.filter((f) => !knownFields.includes(f)), removedFields: knownFields.filter((f) => !detectedFields.includes(f)), }; } ``` ## Migration Checklist - [ ] R...