A self-contained offline Python CLI that turns a local CSV or JSON position export into an auditable portfolio risk ledger. It validates asset, quantity, price, side, venue, and category fields; uses Decimal arithmetic; aggregates signed exposure; flags configurable concentration; and runs named deterministic price-shock scenarios. It emits structured JSON for reports or audit folders and returns explicit errors for malformed input. The agent has no network code, credential handling, exchange integration, order execution, live-price lookup, liquidation model, or return promise. Scenario results are illustrative calculations only; users must supply current data and apply their own review, fee, funding, liquidity, and human-approval controls.