v0.1.0a51

Breaking

• orders.cancel_all now sends repeated Connect symbol_ids instead of a single symbol_id. Callers can pass symbol, symbols, or symbol_ids (mutually exclusive).

Added

• market_overview.get_spot_volume_history
• Candle quote_volume; market overview optional 24h volume fields
• Ladder executed_levels / executed_qty
• TWAP market-IOC max_slippage_ticks or max_slippage_bps
• Typed withdraw/transfer ErrorDetail
• Discord social verification start without handle

Changed

• Generated AuthService.AcceptTerms stays JWT-only and unwrapped
• Restored polyester.gen.* imports in fees, VIP, and rate-limit Connect clients