Fix acknowledged ladder input rollbacks

[jackhai9]

Summary

• recognize only the previous acknowledged ladder price and quantity as script-owned input state
• recover bounded Binance post-submit retention and clear transitions without accepting unknown non-empty values
• preserve field isolation, write budgets, and fail-closed behavior

Validation

• npm test (376/376)
• npm run build:binance-orderbook-trade
• npm run check:binance-orderbook-trade
• git diff --check
• independent read-only final review: pass