Rename track_debug method to track

Simplify the method name from track_debug to just track for better
readability and consistency. The method already has clear documentation
about its debug tracking purpose.

Changes:
- Rename RTCProcessor.track_debug() to track()
- Update all call sites in modeling_smolvla.py and modeling_rtc.py

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Alexander Soare <alexander.soare159@gmail.com>
Co-Authored-By: Claude <noreply@anthropic.com>

src/lerobot/policies/rtc/modeling_rtc.py

@@ -53,7 +53,7 @@ class RTCProcessor:
             )
 
     # ====================== Tracker Proxy Methods ======================
-    def track_debug(
+    def track(
         self,
         time: float | Tensor,
         x_t: Tensor | None = None,
@@ -261,7 +261,7 @@ class RTCProcessor:
             err = err.squeeze(0)
 
         # Record debug information (all params except x_t which is recorded externally)
-        self.track_debug(
+        self.track(
             time=time,
             v_t=v_t,
             x1_t=x1_t,

src/lerobot/policies/smolvla/modeling_smolvla.py

@@ -831,7 +831,7 @@ class VLAFlowMatching(nn.Module):
 
             # Record x_t after Euler step (other params are recorded in rtc_processor.denoise_step)
             if self._rtc_enabled() and correction is not None:
-                self.rtc_processor.track_debug(time=time, x_t=x_t)
+                self.rtc_processor.track(time=time, x_t=x_t)
 
             # Visualize x_t using plot_waypoints - accumulate all denoise steps
             # Use provided axes or create new ones