fix: add system bar insets to call screen elements

Call screen elements were too close to the screen edges because they
didn't account for status bar and navigation bar insets. Apply
WindowInsets.statusBars and WindowInsets.navigationBars padding to
all call screen layouts while keeping video backgrounds full-bleed.

https://claude.ai/code/session_014espsysob7MrE8X8e75jFX

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/call/CallScreen.kt

@@ -28,11 +28,15 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.BluetoothAudio
@@ -201,7 +205,9 @@ private fun CallInProgressUI(
         modifier =
             Modifier
                 .fillMaxSize()
-                .background(MaterialTheme.colorScheme.surface),
+                .background(MaterialTheme.colorScheme.surface)
+                .windowInsetsPadding(WindowInsets.statusBars)
+                .windowInsetsPadding(WindowInsets.navigationBars),
         contentAlignment = Alignment.Center,
     ) {
         Column(
@@ -259,7 +265,9 @@ private fun IncomingCallUI(
         modifier =
             Modifier
                 .fillMaxSize()
-                .background(MaterialTheme.colorScheme.surface),
+                .background(MaterialTheme.colorScheme.surface)
+                .windowInsetsPadding(WindowInsets.statusBars)
+                .windowInsetsPadding(WindowInsets.navigationBars),
         contentAlignment = Alignment.Center,
     ) {
         Column(
@@ -387,6 +395,7 @@ private fun ConnectedCallUI(
                         Modifier
                             .size(120.dp, 160.dp)
                             .align(Alignment.TopEnd)
+                            .windowInsetsPadding(WindowInsets.statusBars)
                             .padding(16.dp),
                     mirror = true,
                 )
@@ -432,7 +441,8 @@ private fun ConnectedCallUI(
                 modifier =
                     Modifier
                         .align(Alignment.TopCenter)
-                        .padding(top = 48.dp),
+                        .windowInsetsPadding(WindowInsets.statusBars)
+                        .padding(top = 16.dp),
             )
         }
 
@@ -441,7 +451,8 @@ private fun ConnectedCallUI(
             modifier =
                 Modifier
                     .align(Alignment.BottomCenter)
-                    .padding(bottom = 48.dp),
+                    .windowInsetsPadding(WindowInsets.navigationBars)
+                    .padding(bottom = 24.dp),
             horizontalAlignment = Alignment.CenterHorizontally,
         ) {
             Row(