diff --git a/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs b/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
index bc6fedef0..08e2cd335 100644
--- a/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
+++ b/crates/ml/src/cuda_pipeline/gpu_dqn_trainer.rs
@@ -83,7 +83,8 @@ const OFI_EMBED_DIM: usize = 10;     // OFI embedding width appended to history
 
 /// Introspective State Vector (ISV) configuration.
 const ISV_K: usize = 4;   // Temporal ISV history length
-const ISV_DIM: usize = 12; // ISV signal count (8 core + 4 regime awareness)
+const ISV_DIM: usize = 13; // ISV signal count (8 core + 4 regime awareness + 1 learning_health)
+pub const LEARNING_HEALTH_INDEX: usize = 12;
 const ISV_EMB_DIM: usize = 8; // ISV embedding output dimension (FC2 output, gate/gamma input)
 /// First ISV tensor index in the flat param buffer.
 /// ISV weights (68-79) are online-only — NOT synced to the target network.