Time-weighted historical collateral deposits per holder

Returns, for each holder, the integral of their collateral balance over the requested time window — expressed as deposit-seconds (decimal-adjusted collateral units multiplied by seconds held). Useful for time-weighted depositor rewards, retroactive incentive splits, etc.

Event sources folded in:

• AddCollateral (+amount, decimal-adjusted)
• RemoveCollateral (−amount)
• Liquidate (−sum of collateralTransfers[] matching the target mint where toLiquidator = true; the row's top-level amount is principal repaid and is ignored for collateral accounting)

Events with eventTime < rangeStart are collapsed into a single bucket at rangeStart so they establish the starting balance for the window. Events at exactly rangeEnd contribute zero seconds.

The mint filter is applied against loan_events_v1.asset_identifier for Add/Remove events and against per-transfer assetMint inside Liquidate metadata. For single-mint collateral these are equal; for CLP/LP collateral, asset_identifier is the pool id — callers should pass the pool id, not an underlying token mint.