attempting a prime step for more reliable jam starts

jam_worker.py

@@ -36,6 +36,7 @@ class JamParams:
     temperature: float = 1.1
     topk: int = 40
     style_ramp_seconds: float = 8.0  # 0 => instant (current behavior), try 6.0–10.0 for gentle glides
+    prime_steps: int = 1 
 
 
 @dataclass
@@ -533,7 +534,21 @@ class JamWorker(threading.Thread):
     # ---------- main loop ----------
 
     def run(self):
-        # generate until stopped
+        # --- PRIME (optional) ---
+        n_prime = max(0, int(getattr(self.params, "prime_steps", 0) or 0))
+        if n_prime:
+            with self._lock:
+                target = self.params.style_vec
+                if target is not None:
+                    # initialize or nudge _style_vec exactly once before prime
+                    self._style_vec = np.array(target, dtype=np.float32, copy=True)
+                style_to_use = self._style_vec
+
+            for _ in range(n_prime):
+                _wav, self.state = self.mrt.generate_chunk(state=self.state, style=style_to_use)
+                # discard audio; just advance state
+
+        
         while not self._stop_event.is_set():
             # throttle generation if we are far ahead
             if not self._should_generate_next_chunk():