[kartojal]

Allow client.subscribe([{ topic: 'prices.crypto', symbols: ['btcusd'], provider: PriceProvider.Binance }]) to opt into Binance spot prices. Add Binance to known price sources and document its USDT close values under canonical USD symbols. Existing defaults are unchanged.

Validation: workspace build, lint, and typecheck passed. 95 focused bindings, socket, and public type tests passed, covering acknowledgements, snapshots/live updates, provider filters through reconnect and unsubscribe, and public exports. Includes a patch changeset for bindings and client. No live authenticated feed test was run.

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Note

Low Risk
Additive enum and documentation changes with expanded tests; default subscriptions and legacy RTDS topics are unchanged.

Overview
Adds Binance as an opt-in PriceProvider and KnownPriceSource on the PolyBolt price bindings and public client types, with a patch changeset for @polymarket/bindings and @polymarket/client.

Callers can pass provider: PriceProvider.Binance on secure prices.crypto subscriptions to request Binance USDT spot closes mapped to canonical USD symbols (e.g. btcusd); omitting provider keeps the previous default. Docs note that the pin is intended for crypto spot only and that acknowledgements and payload source should be checked when a pin may fall back.

Tests and type contracts now treat binance like other known providers/sources (ack parsing, wire normalization, subscribe filter encoding on reconnect/unsubscribe, and PriceProvider union exports).

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