segment-rolluplisted

# Segment Roll-Up (generated for Fox Factory) ## Why this skill exists The standard openfpa skills model a single entity. Fox Factory reports **three segments** (PVG, AAG, SSG) and, under ASU 2023-07, discloses **net sales and Adjusted EBITDA per segment - but not segment COGS or operating income** (`.fpa/business-profile.md`). The base engine has no segment concept, so this skill was generated to bridge the gap. It cites these profile facts: - Three reportable segments; segment metric is **Adjusted EBITDA**, not gross profit. - Segment-level working capital, debt, and tax are **not disclosed** - those stay consolidated. So segments drive the P&L down to Adjusted EBITDA only; the consolidated layer owns everything below. ## The model shape ``` segment net sales + Adj EBITDA margin (PVG, AAG, SSG) │ roll_up_segments() → total net sales + total Adj EBITDA │ segments_to_channels(cogs_pct)→ revenue channels for the engine ▼ consolidated EntityConfig (blended COGS%, opex, D&A, capex, WC days, debt, tax) │ cashflow_from_config() ▼ consolidated P&L + indirect cash flow (revenue → … → FCF) ``` ## How to use 1. Build one `pyfpa.Segment` per segment from disclosed **net sales** and **Adjusted-EBITDA margin** (`adjusted_ebitda / net_sales`). 2. `roll_up_segments(segments)` → total net sales + total Adjusted EBITDA. **Reconcile that total to the disclosed segment-footnote total** - it must tie. 3. `segments_to_channe