Collapse a Design View mode switch to ONE undo point: FX writes run inline in applyMode's block, deferred park queue deleted

src/app/main.cpp

@@ -39,7 +39,6 @@
 #include "shell/panel/panel_window.h"            // panel lifecycle (init/toggle/open-query/shutdown)
 #include "shell/persist/session.h"               // ReaSamplerSession
 #include "shell/view/view.h"                     // reconcileManagedLanes / applyMode
-#include "shell/view/view_fx_park.h"             // the mode switch's deferred FX park
 
 namespace capture = reasampler::capture;
 
@@ -191,24 +190,12 @@ static void OnTimer()
     // reapply so re-arm and model restore ride the one load event (otherwise
     // pre-existing tracks can be mis-detected as "new" and mass-tagged).
     if (g_session.consumeLoadSignal()) {
-        // Every path that raises this signal — open, project switch, recycled
-        // pointer, undo/redo state restore — replaced the model the pending FX
-        // intents were planned against, so they are discarded rather than applied
-        // to the project that replaced it. This is the queue's ONLY guard against
-        // a recycled ReaProject*, which a pointer compare cannot see.
-        reasampler::discardDeferredFxParks();
         reasampler::bankPanelNotifyProjectLoaded();
         // Reconcile lane ownership against the live project's lanes (P_LANENAME,
         // the cross-session source of truth) BEFORE reapplying visibility. Never
         // re-mints, never mass-tags.
         reasampler::reconcileManagedLanes(g_session.view(), nullptr);
         reasampler::applyMode(g_session.view(), g_session.view().activeModeId(), nullptr);
-    } else {
-        // A mode switch applies its visibility/routing writes synchronously and
-        // leaves the per-FX offline work here, so the new mode paints before the
-        // plugins unload. Idle cost is one empty test. Skipped on a load tick so
-        // the reapply's own intents defer one tick like any other switch's.
-        reasampler::drainDeferredFxParks();
     }
 
     reasampler::bankPanelRefresh();  // cheap fingerprint compare; no-op when unchanged/closed