release: v0.4.6

- Cross-exchange backtesting (Pro)
- Dict universe format (provider-based symbol resolution)
- Exogenous data support (register_exo + exo() expressions)
- Provider-based data layout (binance/1h/TICKER.arrow)
- Preload fix for provider layout
- Exo column resampling for multi-resolution
- Pro gate for cross-exchange (clean exit)
- ATR/ADX rolling SMA fix
- Precise mode hybrid fills

examples/12_diagnostics.py

@@ -32,7 +32,7 @@ strategy = (
 start, end = time_range("2022-01-01", "2025-01-01")
 
 config = mbt.BacktestConfig(
-    universe=[1],
+    universe={"binance": ["BTC-USDT:perp"]},
     time_range_start=start,
     time_range_end=end,
     bar_interval=Interval.hours(12),
@@ -49,9 +49,11 @@ config = mbt.BacktestConfig(
 # -- Run ----------------------------------------------------------------------
 if __name__ == "__main__":
     root = os.path.join(os.path.dirname(__file__), "..")
+    data_root = os.path.abspath(os.path.join(root, "data"))
     store = mbt.DataStore(
-        data_root=os.path.abspath(os.path.join(root, "data")),
+        data_root=data_root,
         metadata_db=os.path.abspath(os.path.join(root, "metadata", "metadata.sqlite")),
+        arrow_dir=os.path.join(data_root, "mega"),
     )
 
     # -- 1. Look-ahead bias detection -----------------------------------------