22y: live ctx capture pipeline works (scripts/dualtrace.py, realtime playback + chunked heap snapshot); found config-dependent reduction curves 0x540768/788/7f8 (peak follows band fc; 7f8 min exactly 1.0 => R=1/mask, notch-shaped); acc/f6f8 arrays ZERO in steady state; DECISIVE: applied filter != pointwise R (dual skirt 3dB vs real 11.8) -> FFT-conv wide-window spreading is the missing mechanism

play_loop.lua

@@ -0,0 +1,17 @@
+-- play_loop.lua : realtime playback with repeat ON, held alive for keep_secs.
+local keep_secs = 240
+
+if reaper.GetSetRepeat(0) == 0 then
+  reaper.Main_OnCommand(1068, 0)  -- Transport: Repeat ON
+end
+reaper.Main_OnCommand(1007, 0)    -- Transport: Play
+
+local t0 = reaper.time_precise()
+local function keepalive()
+  if reaper.time_precise() - t0 < keep_secs then
+    reaper.defer(keepalive)
+  else
+    reaper.OnStopButton()
+  end
+end
+reaper.defer(keepalive)