Fix small-screen header clipping (#519) (#532)

* Fix small-screen header clipping: reserve status-bar space and center-constrain titles (fixes #519)

* Remove redundant Gradle configuration lines

app/src/main/java/com/bitchat/android/ui/ChatHeader.kt

@@ -26,6 +26,8 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.text.style.TextAlign
 import com.bitchat.android.core.ui.utils.singleOrTripleClickable
 import androidx.compose.foundation.Canvas
 import androidx.compose.ui.geometry.Offset
@@ -406,7 +408,9 @@ private fun PrivateChatHeader(
             Text(
                 text = titleText,
                 style = MaterialTheme.typography.titleMedium,
-                color = Color(0xFFFF9500) // Orange
+                color = Color(0xFFFF9500), // Orange
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis
             )
 
             Spacer(modifier = Modifier.width(4.dp))
@@ -493,8 +497,12 @@ private fun ChannelHeader(
             style = MaterialTheme.typography.titleMedium,
             color = Color(0xFFFF9500), // Orange to match input field
             modifier = Modifier
-                .align(Alignment.Center)
-                .clickable { onSidebarClick() }
+                .fillMaxWidth()
+                .padding(horizontal = 56.dp)
+                .clickable { onSidebarClick() },
+            textAlign = TextAlign.Center,
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis
         )
         
         // Leave button - positioned on the right
@@ -552,7 +560,9 @@ private fun MainHeader(
                 modifier = Modifier.singleOrTripleClickable(
                     onSingleClick = onTitleClick,
                     onTripleClick = onTripleTitleClick
-                )
+                ),
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis
             )
             
             Spacer(modifier = Modifier.width(2.dp))