candleSnapshot caps each response at ~5000 candles and keeps the newest
slice, silently dropping older candles when the range needs more — so a
wide start_date was not honored. Mirror Deribit's approach: page the range
in windows of interval_ms * 5000, trim each page back to [start_ms, end_ms],
dedupe by timestamp, with a 500-page hard stop. Resolutions without a known
interval fall back to the original single-call path.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adriano
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