Trading Bot Olympics — scheduled seasonal bot tournament

Requested by @expire76 (Telegram community, 2026-09-23; CentCom 26690-26693). A scheduled bot tournament: announced ~1 month ahead so entrants can fine-tune bots with NEXUS and register their best ("Supreme") bots; runs for a fixed window (~1 month); seasonal cadence of ~4 events/year, modeled on the Dota 2 Major tournament calendar. Proposed prize model (USER PROPOSAL, not a committed platform term): a prize pool funded from fees generated during the event, winner-weighted (his suggestion: 50% to the winner). Pairs naturally with the head-to-head paper-trade bot format (Feature #803) shipped 2026-09-23. NOTE: no date, prize formula, or fee split is decided — do not surface any as a live/committed term. VARIANT (26695, @expire76): "Trading Bots Casino" — bots pay an entry BUY-IN for a fixed tournament (~1 week), winner takes a share (his suggestion 50%) of the pool/fees. Two candidate formats under one feature: scheduled "Olympics" vs. buy-in "Casino". Buy-in amount / length / winner share NOT decided. TIERED LADDER (26696/26697, @expire76): Olympics stay as the marquee (4/year, seasonal). Below it, frequent smaller poker-style tournaments tiered by trading budget (e.g. $100 / $1,000 / $10,000 brackets). Qualification: bots that perform well in smaller tournaments advance up toward the Olympics. Budgets/buy-ins/payouts NOT decided.