This proposal bundles two operational governance changes to be executed together via Root:

1. Cross-chain inbound risk control (RiskControl). Adds per-transfer and 24h rolling-window thresholds for large vToken/BNC inbound transfers (primarily via Hyperbridge). Any transfer exceeding its single-transfer cap or 24h cumulative cap is held for a cooldown period and auto-released afterwards, preventing abnormal large inbound amounts from flowing straight into settlement.

• Cooldown period: 14400 blocks (≈24h)
• Exempt accounts (full replacement): vToken ReadyPool only (modl/bf/vtkin, the EntranceAccount receiving SLP staking inflows — normal large protocol inbound). Regular users and operational wallets are not exempt.
• Per-asset thresholds (single / 24h-window): vDOT 250,000 / 500,000 · vASTR 5,000,000 / 10,000,000 · BNC 1,000,000 / 2,000,000 · vBNC 1,000,000 / 2,000,000 · vETH 100 / 200. All windows are 14400 blocks (24h) and enabled.

2. Operational fee USDT conversion (BuyBack + FeeShare). Periodically converts protocol-collected vTokens into USDT, and switches FeeShare to a USDT stablecoin accumulation mode, reducing the price-volatility exposure of operational funds.

• vToken → USDT swaps (slippage tolerance 0.5%, interval ≈1h with on-chain jitter): vDOT → USDT (direct pool, min 20 vDOT); vASTR → BNC → USDT (min 500 vASTR); vBNC → BNC → USDT (min 1,000 vBNC). vASTR/vBNC route through BNC as no direct USDT pool exists; the BNC/USDT pool is shallow (~2k USDT), hence small high-frequency swaps.
• FeeShare USDT config: distribution_id 0, target 86,629 USDT per cycle, interval 432,000 blocks, treasury modl/bf/trsry, swap account modl/bf/usdts, USDT = {Token2:2} (DOT_U).

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