Earn vault totals history

Returns aggregator-level Earn vault totals history. This endpoint uses Earn semantics and intentionally omits EVK-only borrowed, cash, and utilization fields. Fresh Earn snapshots serve current totals, APY, and share price without Ponder or RPC work; missing or stale snapshots retain the indexed/live fallback. Historical USD values use bucket-aligned asset prices when available and remain null when pricing is unavailable. The effective end is to or the current time. When from is omitted, the effective window is 7 days for 1h and 30 days for 1d. Ranges count both endpoint buckets and support at most 744 hourly buckets or 732 daily buckets.