Remove preview GIFs, keep only portrait-rotated output

All frames and GIFs are 96x128 portrait (rotated 90° CW).
Upload directly to panel via app — displays correctly in landscape.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/generate_animations.py

@@ -27,7 +27,7 @@ def ensure_dir(name):
 
 def save_anim(name, frames, fps=10):
     d = ensure_dir(name)
-    # Rotate 90° CW so portrait-assuming app displays correctly on landscape panel
+    # Rotate 90° CW: panel app assumes portrait, panel is mounted landscape
     rotated = [f.rotate(-90, expand=True) for f in frames]
     for i, f in enumerate(rotated):
         f.save(os.path.join(d, f"frame_{i+1:03d}.png"))
@@ -39,16 +39,7 @@ def save_anim(name, frames, fps=10):
         loop=0,
         plugin="pillow",
     )
-    # Also save a landscape preview GIF (un-rotated) for Gitea review
-    preview_path = os.path.join(d, f"{name}_preview.gif")
-    iio.imwrite(
-        preview_path,
-        [f.copy().convert("RGBA") for f in frames],
-        duration=int(1000 / fps),
-        loop=0,
-        plugin="pillow",
-    )
-    print(f"  {name}: {len(rotated)} frames ({rotated[0].size}), preview: {preview_path}")
+    print(f"  {name}: {len(rotated)} frames ({rotated[0].size})")
 
 
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