Fixed color rendering for good

src/display/sprite.rs

@@ -1,5 +1,4 @@
 use crate::card::model::Palette;
-use crate::display::palette::Rgb;
 use embedded_graphics::{
     geometry::Size, pixelcolor::Rgb565, pixelcolor::RgbColor, prelude::Point, primitives::Rectangle,
 };
@@ -14,11 +13,6 @@ where
         return;
     }
 
-    // OPTIMIZATION 1: Pre-compute the 16-color palette to Rgb565 once.
-    let mut palette565 = [Rgb565::new(0, 0, 0); 16];
-    for (i, c) in palette.iter().enumerate() {
-        palette565[i] = Rgb565::new(c.r() >> 3, c.g() >> 2, c.b() >> 3);
-    }
 
     let mut src_width = 1usize;
     while src_width * src_width < pixel_count {
@@ -44,7 +38,7 @@ where
                 pixel_byte & 0x0F
             };
 
-            let color = palette565[color_index as usize];
+            let color = palette[color_index as usize];
 
             let start_x = (x * scale) as i32;
             let start_y = (y * scale) as i32;