Fix backtest clock monotonicity with time alerts

- Replace Vec-based accumulator with BinaryHeap for event ordering
- Add iterative processing that re-advances clocks after each callback
- Rename TimeEventHandlerV2 to TimeEventHandler
- Standardize FFI naming conventions
- Add tests for monotonicity edge cases
- Resolves #3384

Author: cjdsellers

RELEASES.md

@@ -13,6 +13,7 @@ Released on TBD (UTC).
 ### Security
 
 ### Fixes
+- Fixed backtest clock monotonicity with time alerts (#3384), thanks @draphi
 - Fixed order updated panic during reconciliation (#3380), thanks for reporting @santivazq
 - Fixed trailing stops default price type (#3379), thanks @KaulSe
 - Fixed registering msgbus with OptionExerciseModule (#3383), thanks @davidsblom

crates/backtest/cbindgen.toml

@@ -11,7 +11,7 @@ tab_width = 4
 "UnixNanos" = "uint64_t"
 "TimedeltaNanos" = "int64_t"
 "TimeEvent" = "TimeEvent_t"
-"TimeEventHandler" = "TimeEventHandler_t"
+"TimeEventHandler_API" = "TimeEventHandler_t"
 "UUID4" = "UUID4_t"
 "Logger" = "Logger_t"
 "TraderId" = "TraderId_t"

crates/backtest/cbindgen_cython.toml

@@ -13,7 +13,11 @@ header = '"../includes/backtest.h"'
 
 "cpython.object" = ["PyObject"]
 
-"nautilus_trader.core.rust.common" = ["TestClock_API", "LiveClock_API"]
+"nautilus_trader.core.rust.common" = [
+  "TestClock_API",
+  "LiveClock_API",
+  "TimeEventHandler_t",
+]
 
 "nautilus_trader.core.rust.core" = ["CVec", "UUID4_t"]
 
@@ -25,7 +29,7 @@ rename_variants = "ScreamingSnakeCase"
 "UnixNanos" = "uint64_t"
 "TimedeltaNanos" = "int64_t"
 "TimeEvent" = "TimeEvent_t"
-"TimeEventHandler" = "TimeEventHandler_t"
+"TimeEventHandler_API" = "TimeEventHandler_t"
 "UUID4" = "UUID4_t"
 "Logger" = "Logger_t"
 "TestClock" = "TestClock_t"