Imperial Position Management

Use for:

• listing open positions
• checking current exposure before new trades
• sending close-side action=1 market orders
• reviewing whether residue sync is needed after a close

Rules:

• Match profileIndex to the live position.
• Prefer explicit user input for symbol, side, venue, and notional when closing.
• After non-USDC collateral venues, consider /passthrough/users/{wallet}/profiles/{index}/sync.