refactor: migrate LocalClipboardManager to LocalClipboard

Replace deprecated LocalClipboardManager with LocalClipboard across
all 21 files in both amethyst and desktopApp modules.

https://claude.ai/code/session_01FE2NjKxhUYUFRvhyqbYpUH

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/ArticleReaderScreen.kt

@@ -69,7 +69,7 @@ import androidx.compose.ui.input.key.isMetaPressed
 import androidx.compose.ui.input.key.key
 import androidx.compose.ui.input.key.onPreviewKeyEvent
 import androidx.compose.ui.input.key.type
-import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalClipboard
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.commons.compose.article.ArticleHeader
 import com.vitorpamplona.amethyst.commons.compose.article.TableOfContents
@@ -366,7 +366,7 @@ fun ArticleReaderScreen(
     val authorName = authorUser?.toBestDisplayName()
     val authorPicture = authorUser?.profilePicture()
 
-    val clipboardManager = LocalClipboardManager.current
+    val clipboardManager = LocalClipboard.current
 
     LaunchedEffect(Unit) {
         focusRequester.requestFocus()

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/auth/LoginCard.kt

@@ -49,7 +49,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
-import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalClipboard
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
@@ -251,7 +251,7 @@ private fun NostrConnectContent(
     val scope = rememberCoroutineScope()
 
     @Suppress("DEPRECATION")
-    val clipboardManager = LocalClipboardManager.current
+    val clipboardManager = LocalClipboard.current
 
     if (errorMessage != null) {
         Text(