Operational Structure Without Hindsight

Specify a chart contract that fixes the market, data feed, candle timezone or session, analysis timeframe, and operational meanings of external, internal, and protected structure.

Classify a developing high or low as a pivot candidate, provisional range extreme, or confirmed external swing by applying a fixed pivot-and-displacement rule only after its required confirmation data exist.

Construct a two-ledger hierarchy that partitions a confirmed external leg into internal swings, identifies the protected swing, and preserves original bar-by-bar labels separately from retrospective annotations.