Module reducer 

Pure state reducer for event-sourced portfolio state (JOURNAL_SPEC §9).

reduce applies a single EngineEvent to a PortfolioState. state_hash produces a deterministic blake3 digest of the state.

Enums

ReduceError

Recoverable errors produced by the reducer.

Functions

checkpoint_state_hash

Public wrapper for callers that only need the hash (e.g. replay verification). Serializes PortfolioState once to Value.

clear_retiring_order_target

Remove order_id from all retiring target sets and direct-retiring set.

create_checkpoint

Create a Checkpoint from the current portfolio state.

lookup_order_attribution

Resolve correlation/strategy attribution for an order lifecycle event.

lookup_order_intent

Resolve originating ClientIntentId for an order lifecycle event.

reduce

Apply a single event to the portfolio state.

severity

Severity ordering for risk stop states. Higher = more severe.

state_hash

Produce a deterministic hash of the portfolio state.