- bitmap_: Uint8* (owning, free'd al destructor) → std::vector<Uint8>
- loadBitmap copia des del buffer de LoadGif i fa free(pixels) de
l'intermedi (gif.h usa malloc internament)
- ~Text() eliminat: regla 0 aplicada (vector es destrueix sol)
- Les 4 comprovacions !bitmap_ → bitmap_.empty()
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>