MAX OPEN $ (2026-08-06) — set (or clear with null) this bot's OWN cap on how much money it may have committed across all its open positions at once. It OVERRIDES the desk cap; cleared → the bot follows the desk cap (or is uncapped if that is unset too).

Composes with the per-trade cap rather than replacing it: max_usd_per_trade bounds ONE order, this bounds the whole bot, and the desk's buying power bounds everything. A trade must pass all three. A LIVE-FILL knob — it never touches the verdict. Owner/desk-pair scoped (404 cross-desk, via _owned_deployment), audited like the other per-bot edits.