Fix Antigravity IDE icon extraction

postinstall.sh

@@ -617,25 +617,9 @@ EOF
     fi
     sudo ln -sfn /opt/antigravity-ide/antigravity-ide /usr/local/bin/antigravity-ide
     
-    # Extract IDE icon from app.asar
-    if [ -f "/opt/antigravity-ide/resources/app.asar" ]; then
-        sudo python3 - /opt/antigravity-ide/resources/app.asar /usr/share/icons/hicolor/512x512/apps/antigravity-ide.png <<'PY'
-import json, struct, sys
-from pathlib import Path
-asar = Path(sys.argv[1])
-out = Path(sys.argv[2])
-with asar.open('rb') as f:
-    f.read(4)
-    header_size = struct.unpack('<I', f.read(4))[0]
-    f.read(4)
-    json_size = struct.unpack('<I', f.read(4))[0]
-    header = json.loads(f.read(json_size).decode())
-icon = header.get('files', {}).get('icon.png')
-if icon:
-    with asar.open('rb') as f:
-        f.seek(8 + header_size + int(icon['offset']))
-        out.write_bytes(f.read(int(icon['size'])))
-PY
+    # Copy IDE icon from uncompressed resources
+    if [ -f "/opt/antigravity-ide/resources/app/resources/linux/code.png" ]; then
+        sudo cp "/opt/antigravity-ide/resources/app/resources/linux/code.png" /usr/share/icons/hicolor/512x512/apps/antigravity-ide.png
     fi
 
     sudo bash -c 'cat > /usr/share/applications/antigravity-ide.desktop' <<EOF