fix(car): resolve detekt failure in node colors

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jamesarich

core/model/src/commonMain/kotlin/org/meshtastic/core/model/NodeColors.kt

@@ -21,14 +21,23 @@ private const val GREEN_WEIGHT = 0.587
 private const val BLUE_WEIGHT = 0.114
 private const val BRIGHTNESS_THRESHOLD = 0.5
 private const val MAX_CHANNEL = 255
+private const val RED_MASK = 0xFF0000
+private const val GREEN_MASK = 0x00FF00
+private const val BLUE_MASK = 0x0000FF
+private const val ALPHA_MASK = 0xFF
+private const val RED_SHIFT = 16
+private const val GREEN_SHIFT = 8
+private const val ALPHA_SHIFT = 24
+private const val BLACK = 0xFF000000.toInt()
+private const val WHITE = 0xFFFFFFFF.toInt()
 
 /** Derives a unique color pair from a node number. Returns (foreground, background) as @ColorInt. */
 fun nodeColorsFromNum(nodeNum: Int): Pair<Int, Int> {
-    val r = (nodeNum and 0xFF0000) shr 16
-    val g = (nodeNum and 0x00FF00) shr 8
-    val b = nodeNum and 0x0000FF
+    val r = (nodeNum and RED_MASK) shr RED_SHIFT
+    val g = (nodeNum and GREEN_MASK) shr GREEN_SHIFT
+    val b = nodeNum and BLUE_MASK
     val brightness = ((r * RED_WEIGHT) + (g * GREEN_WEIGHT) + (b * BLUE_WEIGHT)) / MAX_CHANNEL
-    val foreground = if (brightness > BRIGHTNESS_THRESHOLD) 0xFF000000.toInt() else 0xFFFFFFFF.toInt()
-    val background = (0xFF shl 24) or (r shl 16) or (g shl 8) or b
+    val foreground = if (brightness > BRIGHTNESS_THRESHOLD) BLACK else WHITE
+    val background = (ALPHA_MASK shl ALPHA_SHIFT) or (r shl RED_SHIFT) or (g shl GREEN_SHIFT) or b
     return foreground to background
 }