0xAsset Credit Minting

This mechanism lets an approved allocator create 0x asset (0x) inventory on the UCE while recording a corresponding debt against their credit line. It is the primary way allocators provision 0x that will later be used for referral mints and pro-rata protocol draws.

Effects

When allocatorCreditMint(allocator, amount) succeeds, the engine:

• Mints 0x to the UCE contract (not to the allocator) and credits the allocator’s reservedZeroX by amount.

• Accrues allocator debt by increasing baseDebt with baseDelta = amount / debtIndex (RAY scale), so $\displaystyle \text{effective debt} = \text{baseDebt} \times \frac{\text{debtIndex}}{10^{18}}$.

• Tracks throughput by incrementing mintedToday (UTC-bucketed) and rolling this counter when the day index changes.

• Reorders the allocator in the internal linked list (via _rebalanceAllocatorUp) to reflect higher effective debt - used later for efficient pro-rata draws.

• Updates global tallies: totalReservedZeroX += amount and baseTotalDebt += baseDelta.

• Emits CreditMinted(allocator, amount).

Note: Borrow fees are not charged at mint time; they apply on repay in underlying.