Keep Wear chat rows clear of controls

wear/src/main/java/com/bitchat/watch/ui/ChatScaffold.kt

@@ -260,19 +260,17 @@ private fun ChatBody(
             val layoutDirection = LocalLayoutDirection.current
             TransformingLazyColumn(
                 state = columnState,
-                modifier = Modifier.fillMaxSize(),
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = 30.dp, bottom = 64.dp),
                 // Arrangement.Bottom anchors short content to the bottom: the first message
                 // starts just above the action bar and new messages push history upward.
-                // The padding reserves permanent room for the floating header and action
-                // bar; being constant, it never disturbs an in-flight scroll gesture.
+                // The viewport itself stays between the floating header and action bar, so
+                // rows cannot scroll underneath either control. Its geometry is constant,
+                // so showing or hiding the overlays never disturbs an in-flight gesture.
                 verticalArrangement = Arrangement.Bottom,
                 contentPadding = scaffoldPadding
                     .withRoundScreenPadding(layoutDirection)
-                    .withMinimumVerticalPadding(
-                        layoutDirection = layoutDirection,
-                        top = 30.dp,
-                        bottom = 64.dp
-                    )
             ) {
                 if (messages.isEmpty()) {
                     item {

wear/src/main/java/com/bitchat/watch/ui/WearContentPadding.kt

@@ -33,27 +33,6 @@ internal fun PaddingValues.withAdditionalPadding(
     )
 }
 
-internal fun PaddingValues.withMinimumVerticalPadding(
-    layoutDirection: LayoutDirection,
-    top: Dp,
-    bottom: Dp
-): PaddingValues {
-    val start = when (layoutDirection) {
-        LayoutDirection.Ltr -> calculateLeftPadding(layoutDirection)
-        LayoutDirection.Rtl -> calculateRightPadding(layoutDirection)
-    }
-    val end = when (layoutDirection) {
-        LayoutDirection.Ltr -> calculateRightPadding(layoutDirection)
-        LayoutDirection.Rtl -> calculateLeftPadding(layoutDirection)
-    }
-    return PaddingValues(
-        start = start,
-        top = maxOf(calculateTopPadding(), top),
-        end = end,
-        bottom = maxOf(calculateBottomPadding(), bottom)
-    )
-}
-
 @Composable
 internal fun PaddingValues.withRoundScreenPadding(
     layoutDirection: LayoutDirection

wear/src/test/java/com/bitchat/watch/ui/WearContentPaddingTest.kt

@@ -23,21 +23,6 @@ class WearContentPaddingTest {
         assertEquals(28.dp, resolved.calculateBottomPadding())
     }
 
-    @Test
-    fun `chat padding keeps responsive sides and overlay clearances`() {
-        val resolved = PaddingValues(start = 10.dp, top = 18.dp, end = 12.dp, bottom = 20.dp)
-            .withMinimumVerticalPadding(
-                layoutDirection = LayoutDirection.Ltr,
-                top = 30.dp,
-                bottom = 64.dp
-            )
-
-        assertEquals(10.dp, resolved.calculateLeftPadding(LayoutDirection.Ltr))
-        assertEquals(12.dp, resolved.calculateRightPadding(LayoutDirection.Ltr))
-        assertEquals(30.dp, resolved.calculateTopPadding())
-        assertEquals(64.dp, resolved.calculateBottomPadding())
-    }
-
     @Test
     fun `round screens receive an additional ten percent inset`() {
         assertEquals(20.dp, additionalRoundScreenPadding(192, isScreenRound = true))