Drop VAE tiling cleanup (mutation is fork-local on ZeroGPU; parent state untouched)

app.py

@@ -242,12 +242,11 @@ def generate(
     H = W = int(resolution)
 
     # Heavy resolutions push the VAE decode over the 48GB MIG budget — slice + tile.
-    vae_tiling_enabled = False
+    # Mutating pipeline.vae here is fork-local (ZeroGPU forks per call) so no cleanup needed.
     if H >= 768:
         try:
             pipeline.vae.enable_tiling()
             pipeline.vae.enable_slicing()
-            vae_tiling_enabled = True
         except Exception as _e:
             print(f"[pid] VAE tiling/slicing not available: {_e}", flush=True)
 
@@ -327,13 +326,6 @@ def generate(
             gr.update(),
         )
 
-    if vae_tiling_enabled:
-        try:
-            pipeline.vae.disable_tiling()
-            pipeline.vae.disable_slicing()
-        except Exception:
-            pass
-
     # ---- Done: hide live preview, show the A/B slider ----
     yield (
         gr.update(visible=False, value=None),