Ring buffer slot 3 now stores holderCount snapshots instead of tax deltas.
Tax tracking simplified to a totalTaxPaid counter on the stats record.
Removed unbounded ethReserveHistory and feeHistory tables; 7d ETH reserve
growth is now computed from the ring buffer. LiveStats renders inline SVG
sparklines for ETH reserve, supply, and holders with holder growth %.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
