diff --git a/crates/ml/src/cuda_pipeline/experience_kernels.cu b/crates/ml/src/cuda_pipeline/experience_kernels.cu
index 07107551e..23df9e388 100644
--- a/crates/ml/src/cuda_pipeline/experience_kernels.cu
+++ b/crates/ml/src/cuda_pipeline/experience_kernels.cu
@@ -392,7 +392,9 @@ extern "C" __global__ void experience_state_gather(
     /* #11 Time-reversal: reverse bar indexing for selected episodes.
      * If > 0, episodes with index % time_reversal_mod == 0 are played backwards.
      * 5 = 20% of episodes reversed, 3 = 33%, 0 = disabled. */
-    int time_reversal_mod
+    int time_reversal_mod,
+    const float* __restrict__ plan_params_ptr,   /* [N, 6] trade plan params. NULL = no plan. */
+    const float* __restrict__ isv_signals_ptr    /* [12] pinned device-mapped ISV signals. NULL = static. */
 ) {
     int i = blockIdx.x * blockDim.x + threadIdx.x;
     if (i >= N) return;
@@ -572,7 +574,7 @@ extern "C" __global__ void experience_state_gather(
                        : 0.0f;
 
     int portfolio_base = market_dim;
-    if (portfolio_base + 11 < state_dim) {
+    if (portfolio_base + 13 < state_dim) {
         out[portfolio_base + 0] = f_position;                          /* raw position */
         out[portfolio_base + 1] = f_unrealized_pnl / f_equity;        /* trade P&L signal */
         out[portfolio_base + 2] = f_drawdown;                          /* risk: how deep are we? */
@@ -597,6 +599,20 @@ extern "C" __global__ void experience_state_gather(
             ? fminf(-f_unrealized_pnl / (plan_stop * f_equity + 1e-6f), 2.0f)  /* pnl vs stop */
             : 0.0f;
         out[portfolio_base + 11] = plan_conv;  /* conviction at entry [0, 1] */
+
+        /* P11: Conviction drift — current conviction minus entry conviction.
+         * Negative drift = model's thesis is weakening → exit signal.
+         * Only meaningful when a plan is active (ps[23] > 0.5). */
+        out[portfolio_base + 12] = (plan_params_ptr != NULL && ps[23] > 0.5f)
+            ? (plan_params_ptr[i * 6 + 4] - ps[27])   /* conviction drift */
+            : 0.0f;
+
+        /* P12: Regime shift since entry — |regime_stability_now - regime_stability_at_entry|.
+         * Large shift = regime changed mid-trade, plan may be invalid.
+         * Entry regime stored in ps[29] during plan activation. */
+        out[portfolio_base + 13] = (isv_signals_ptr != NULL && ps[23] > 0.5f)
+            ? fabsf(isv_signals_ptr[11] - ps[29])      /* regime shift */
+            : 0.0f;
     }
 
     /* -- Multi-timeframe features: [market_dim+8 .. market_dim+8+16) --
@@ -1481,6 +1497,8 @@ extern "C" __global__ void experience_env_step(
         ps[26] = pp[3];  /* scale_aggression */
         ps[27] = pp[4];  /* conviction */
         ps[28] = pp[5];  /* asymmetry */
+        /* Store entry regime_stability for drift detection (P12). */
+        ps[29] = (isv_signals_ptr != NULL) ? isv_signals_ptr[11] : 1.0f;
         /* Apply conviction to position size — scale by readiness for smooth ramp */
         position *= fmaxf(ps[27] * readiness, 0.1f);
     }
diff --git a/crates/ml/src/cuda_pipeline/gpu_experience_collector.rs b/crates/ml/src/cuda_pipeline/gpu_experience_collector.rs
index fd24cfd36..b9e8a9e0a 100644
--- a/crates/ml/src/cuda_pipeline/gpu_experience_collector.rs
+++ b/crates/ml/src/cuda_pipeline/gpu_experience_collector.rs
@@ -1919,6 +1919,10 @@ impl GpuExperienceCollector {
                     .map(|b| b.device_ptr(&self.stream).0)
                     .unwrap_or(0u64);
 
+                // Plan params and ISV signals pointers for conviction drift + regime shift features
+                let plan_ptr = self.plan_params_dev_ptr;
+                let isv_ptr = self.isv_signals_dev_ptr;
+
                 self.stream
                     .launch_builder(&self.state_gather_kernel)
                     .arg(market_features_buf)
@@ -1935,6 +1939,8 @@ impl GpuExperienceCollector {
                     .arg(&vol_norm)          // #13 vol normalization
                     .arg(&mirror_i32)        // #10 mirror universe
                     .arg(&config.time_reversal_mod) // #11 time-reversal
+                    .arg(&plan_ptr)          // plan_params_ptr (NULL=no plan)
+                    .arg(&isv_ptr)           // isv_signals_ptr (NULL=static)
                     .launch(launch_cfg)
                     .map_err(|e| MLError::ModelError(format!(
                         "experience_state_gather t={t}: {e}"