Admin levers

The knobs from the pricing engine: markup, admin fee, slot baseline, rebate distribution, and shipping mode.

Default markup (decimal, 0.15 = 15%)

Fixed admin fee (USD / slot)

Baseline slots (shipping divisor)

Total slots per loop

Min slots per user

Rebate payout (0..1)

Shipping mode

USD → PHP display rate

Changes apply to loops created after saving. Existing loops keep their pricing snapshot.