id: CORE-002
title: Instrument-Aware Quote Units and Conversion Multipliers
status: done
priority: P0
effort: M
depends_on:
  - CORE-001A
  - CORE-001B
  - CORE-001C
tags:
  - core
  - units
  - pricing
  - domain
summary: Instrument-aware quote-unit semantics are now rolled out across overview, hedge/runtime, and historical workspace-derived paths.
completed_notes:
  - `CORE-002A`: overview now treats GLD quotes as USD/share and converts through explicit instrument metadata.
  - `CORE-002B`: hedge/runtime now recomputes live collateral metrics from converted quote-unit semantics.
  - `CORE-002C`: historical/backtest/event workspace defaults now convert stored collateral weight into GLD share units explicitly.
  - Unsupported or missing conversion metadata fails closed instead of being guessed.