Idea: Partial Recalculation (Dirty-Flag Engine)
Status: PARKED — Premature optimization. Assessed as non-issue for current scale (≤72 variants per CostingSheet). Origin: Relocated from TODOS.md (former §6 — Industry Best Practices, formerly SB-6 in STRATEGIC_BLIND_SPOTS.md) during a TODOS pruning audit (2026-05-11).
Concept
Performance optimization for the Pricing Engine using selective dirty-flag propagation. Instead of recalculating the entire PriceMatrix when a single cost component changes, track which variants are affected and recalculate only those.
Why Parked
Current scale (≤72 variants per CostingSheet) means full recalculation completes in negligible time. The optimization adds complexity without measurable user benefit at current scale. Revisit if variant counts grow significantly (e.g., through combinatorial ancillary pricing or multi-departure batching).