feat(ui): дизайн-система radiOLA — палитра, тема, типографика, бренд, motion, pill таб-бар

- цветовые токены тёмно-зелёной темы + RadiolaColors (CompositionLocal)
- darkColorScheme + всегда тёмная тема, фирменные shapes
- типографика с весами/размерами под макет
- Brand: AppMark (градиентный R), RadiolaWordmark, MonoMark
- Motion: спеки движения, pressScale, живой эквалайзер
- pill-таб-бар с анимированной активной вкладкой

app/src/main/java/com/radiola/ui/theme/Motion.kt

@@ -0,0 +1,102 @@
+package com.radiola.ui.theme
+
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.RepeatMode
+import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateFloat
+import androidx.compose.animation.core.infiniteRepeatable
+import androidx.compose.animation.core.rememberInfiniteTransition
+import androidx.compose.animation.core.spring
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.gestures.detectTapGestures
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsPressedAsState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.CornerRadius
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.unit.dp
+import kotlin.math.abs
+
+/** Стандартные длительности и кривые движения приложения. */
+object Motion {
+    const val Fast = 120
+    const val Medium = 220
+    const val Slow = 360
+
+    fun <T> snappy() = spring<T>(
+        dampingRatio = Spring.DampingRatioMediumBouncy,
+        stiffness = Spring.StiffnessMediumLow
+    )
+
+    fun <T> gentle() = tween<T>(durationMillis = Medium, easing = FastOutSlowInEasing)
+}
+
+/** Лёгкое нажатие: плавное уменьшение масштаба, пока палец на элементе. */
+@Composable
+fun Modifier.pressScale(
+    pressedScale: Float = 0.94f,
+    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() }
+): Modifier {
+    val pressed by interactionSource.collectIsPressedAsState()
+    val scale by androidx.compose.animation.core.animateFloatAsState(
+        targetValue = if (pressed) pressedScale else 1f,
+        animationSpec = tween(Motion.Fast, easing = FastOutSlowInEasing),
+        label = "pressScale"
+    )
+    return this.graphicsLayer {
+        scaleX = scale
+        scaleY = scale
+    }
+}
+
+/**
+ * Живой эквалайзер для прямого эфира — декоративный, без перемотки.
+ * Полоски плавно «дышат» при воспроизведении.
+ */
+@Composable
+fun LiveEqualizer(
+    modifier: Modifier = Modifier,
+    barCount: Int = 36,
+    color: Color = Accent,
+    playing: Boolean = true
+) {
+    val transition = rememberInfiniteTransition(label = "eq")
+    val phase by transition.animateFloat(
+        initialValue = 0f,
+        targetValue = (Math.PI * 2).toFloat(),
+        animationSpec = infiniteRepeatable(
+            animation = tween(1400, easing = LinearEasing),
+            repeatMode = RepeatMode.Restart
+        ),
+        label = "eqPhase"
+    )
+    Canvas(modifier = modifier) {
+        val gap = 3.dp.toPx()
+        val barWidth = (size.width - gap * (barCount - 1)) / barCount
+        val maxH = size.height
+        for (i in 0 until barCount) {
+            val seed = (i * 0.7f)
+            val wave = if (playing) {
+                0.45f + 0.55f * abs(kotlin.math.sin(phase + seed))
+            } else 0.25f
+            val h = maxH * wave
+            val x = i * (barWidth + gap)
+            val y = (maxH - h) / 2f
+            drawRoundRect(
+                color = color,
+                topLeft = Offset(x, y),
+                size = Size(barWidth, h),
+                cornerRadius = CornerRadius(barWidth / 2f, barWidth / 2f)
+            )
+        }
+    }
+}