style: cargo fmt --workspace (whitespace/wrapping only, no semantic change)

Whole-workspace rustfmt pass picked up while iterating on Mamba GPU
backward work. Verified formatting-only via diff sampling; no logic
changed.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

crates/training/rtx-transformers/src/distributed/mod.rs

@@ -16,10 +16,9 @@ pub mod pipeline_parallelism_tests;
 
 // Re-export key types for convenience
 pub use pipeline_parallelism::{
-    PipelineParallelism, PipelineConfig, PipelineSchedule, MicroBatch,
-    PipelineStage, StageConfig, GradientSynchronizer, ActivationCheckpoint,
-    LoadBalancer, PipelineMetrics, CommunicationBuffer, DeviceMapping,
-    ModelPartition,
+    ActivationCheckpoint, CommunicationBuffer, DeviceMapping, GradientSynchronizer, LoadBalancer,
+    MicroBatch, ModelPartition, PipelineConfig, PipelineMetrics, PipelineParallelism,
+    PipelineSchedule, PipelineStage, StageConfig,
 };
 
 /// Initialize distributed training infrastructure
@@ -33,9 +32,9 @@ pub fn get_distributed_capabilities() -> Vec<&'static str> {
     vec![
         "Pipeline Parallelism",
         "Micro-batch Processing",
-        "Gradient Synchronization", 
+        "Gradient Synchronization",
         "Activation Checkpointing",
         "Load Balancing",
         "Fault Tolerance",
     ]
-}
+}