Sales rep commission

Manual check tool. The webhook at POST /api/commission is the source of truth; this page mirrors the same formula for spot checks.

Redlines are rep-facing and state-only: VA/WV/OH/MI 2.85, PA 2.90, IL 2.95. These are not the installer cost redlines used for company commission. Adders are subtracted after the split, so a small system with a large adder can legitimately go negative.