[mrmx]

What

The Java SDK could not run a strategy that reads candles. Both workflows fixed the data type to ticker, so a kline strategy over a klines dataset always failed at preparation:

This strategy reads kline data, but the run was submitted against ticker data. Run it against kline data, or use a strategy written for ticker data.

The TypeScript and Python SDKs already take a data type, and the MCP server (which sits on this SDK) had no way to ask for a kline run for the same reason.

Change

• BacktestRequest and SweepRequest get type (DataSourceType; TICKER by default, KLINE for candles). Builders: .type(DataSourceType.KLINE). Every stage uses it: preparation, execution, polling, cancellation, and the sweep result, sensitivity and curve reads.
• A run is addressed by its exchange, its type and its id, so the reads that took only an exchange and an id get overloads with a type: getBacktestResult(exchangeId, type, jobId), getSweepRunEquityCurve(exchangeId, type, ...) and getBoundedSweepRunEquityCurve(exchangeId, type, ...), on QTSurfer and on AuthenticatedClient. The forms without a type keep reading the ticker route.
• The record constructors that predate type still work and build ticker runs. A null type means TICKER.
• docs/backtesting.md shows how to ask for a kline run; changelog entry under [Unreleased].

Tests

• DataSourceTypeRequestTest: the default, the given type, the older constructors and a null type.
• A kline backtest prepares, executes, polls and reads on the kline route and never on the ticker one (Mockito); readResult addresses a run by its type; a kline sweep uses the kline route on every call (local HTTP server); getBacktestResult of a kline run hits /backtest/user/kline/execute/... through both QTSurfer and the session authenticate(...) returns.
• mvn verify passes with the new tests (2 skipped, as before).

Checked live

The built classes against the live API (OpenAPI 0.128.47), on a ready klines dataset with a kline QTScript strategy:

• a kline backtest completes; the same strategy as a ticker run still ends Failed with the platform's reason, now a QTSExecutionError;
• a run is readable by its type (Completed) and not found on the ticker route (404);
• a kline sweep over the dataset completes with its rows.

Not in this PR

No version bump or release. The MCP server takes the type in a following change, once this is released.