feat(ui): press feedback + haptics

- pressDip modifier (scale 0.97 press / spring-back, transform-only,
  reduce-motion aware) sharing the row's interaction source with the
  Material ripple
- Library song rows: ripple + dip on tap; verified tap still plays
- Page-settle haptic tick in the tab pager (skipped on first frame)

app/src/main/java/com/rada/ui/library/LibraryScreen.kt

@@ -79,6 +79,9 @@ import com.rada.data.repository.SortOrder
 import com.rada.ui.theme.AppearanceDialog
 import com.rada.ui.components.AppHomeButton
 import com.rada.ui.components.EqualizerBars
+import com.rada.ui.theme.LocalReduceMotion
+import com.rada.ui.theme.pressDip
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import com.rada.ui.theme.LocalTokens
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -463,10 +466,12 @@ private fun SongListItem(
     onToggleFavorite: () -> Unit,
     onDelete: () -> Unit,
 ) {
+    val interaction = remember { MutableInteractionSource() }
     Row(
         modifier = Modifier
             .fillMaxWidth()
-            .clickable(onClick = onClick)
+            .pressDip(interaction, LocalReduceMotion.current)
+            .clickable(interactionSource = interaction, indication = androidx.compose.foundation.LocalIndication.current, onClick = onClick)
             .padding(horizontal = 16.dp, vertical = 12.dp),
         verticalAlignment = Alignment.CenterVertically,
     ) {

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

@@ -1,5 +1,13 @@
 package com.rada.ui.theme
 
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsPressedAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.composed
+import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.animation.EnterTransition
 import androidx.compose.animation.ExitTransition
 import androidx.compose.animation.core.CubicBezierEasing
@@ -107,3 +115,30 @@ fun metadataExit(reduce: Boolean): ExitTransition =
 
 /** Duration for press/feedback animations, zeroed under reduce motion. */
 fun feedbackDuration(reduce: Boolean): Int = if (reduce) 0 else FeedbackMs
+
+// ── Press feedback ────────────────────────────────────────────────────────
+// Taps should feel physical before navigation resolves: the row dips
+// (scale 0.97) on press and springs back on release. Transform-only, so
+// it's cheap; zeroed under Reduce Motion by the caller.
+
+
+/**
+ * Press-dip for list rows: scales to 0.97 while pressed. Use on rows that
+ * already have a clickable/combinedClickable modifier earlier in the chain.
+ */
+fun Modifier.pressDip(
+    interactionSource: MutableInteractionSource,
+    reduce: Boolean,
+): Modifier = composed {
+    if (reduce) return@composed this
+    val pressed by interactionSource.collectIsPressedAsState()
+    val scale by animateFloatAsState(
+        targetValue = if (pressed) 0.97f else 1f,
+        animationSpec = androidx.compose.animation.core.tween(
+            durationMillis = if (pressed) 90 else 160,
+            easing = if (pressed) MotionExit else MotionArrival,
+        ),
+        label = "pressDip",
+    )
+    this.graphicsLayer { scaleX = scale; scaleY = scale }
+}