refactor(commons): migrate from Moko to Compose Multiplatform Resources

Remove Moko Resources dependency that blocks AGP 9.0 migration.
Migrate to built-in Compose Multiplatform Resources which is compatible
with the new KMP Android plugin.

- Remove moko-resources plugin and libraries from commons module
- Move strings.xml from moko-resources/ to composeResources/values/
- Update imports from SharedRes.strings.* to Res.string.*
- Add compose.components.resources dependency to desktopApp
- Configure resource package as com.vitorpamplona.amethyst.commons.resources

Closes #1675

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/components/LoadingState.kt

@@ -34,8 +34,12 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
-import com.vitorpamplona.amethyst.commons.SharedRes
-import dev.icerock.moko.resources.compose.stringResource
+import com.vitorpamplona.amethyst.commons.resources.Res
+import com.vitorpamplona.amethyst.commons.resources.action_refresh
+import com.vitorpamplona.amethyst.commons.resources.action_try_again
+import com.vitorpamplona.amethyst.commons.resources.error_loading_feed
+import com.vitorpamplona.amethyst.commons.resources.feed_empty
+import org.jetbrains.compose.resources.stringResource
 
 /**
  * A centered loading state with a progress indicator and message.
@@ -71,7 +75,7 @@ fun EmptyState(
     onRefresh: (() -> Unit)? = null,
     refreshLabel: String? = null,
 ) {
-    val actualRefreshLabel = refreshLabel ?: stringResource(SharedRes.strings.action_refresh)
+    val actualRefreshLabel = refreshLabel ?: stringResource(Res.string.action_refresh)
 
     Column(
         modifier = modifier.fillMaxSize(),
@@ -110,7 +114,7 @@ fun ErrorState(
     onRetry: (() -> Unit)? = null,
     retryLabel: String? = null,
 ) {
-    val actualRetryLabel = retryLabel ?: stringResource(SharedRes.strings.action_try_again)
+    val actualRetryLabel = retryLabel ?: stringResource(Res.string.action_try_again)
 
     Column(
         modifier = modifier.fillMaxSize(),
@@ -140,7 +144,7 @@ fun FeedEmptyState(
     title: String? = null,
     onRefresh: (() -> Unit)? = null,
 ) {
-    val actualTitle = title ?: stringResource(SharedRes.strings.feed_empty)
+    val actualTitle = title ?: stringResource(Res.string.feed_empty)
 
     EmptyState(
         title = actualTitle,
@@ -158,7 +162,7 @@ fun FeedErrorState(
     modifier: Modifier = Modifier,
     onRetry: (() -> Unit)? = null,
 ) {
-    val formattedMessage = stringResource(SharedRes.strings.error_loading_feed).format(errorMessage)
+    val formattedMessage = stringResource(Res.string.error_loading_feed).format(errorMessage)
 
     ErrorState(
         message = formattedMessage,

commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screens/PlaceholderScreens.kt

@@ -28,8 +28,14 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
-import com.vitorpamplona.amethyst.commons.SharedRes
-import dev.icerock.moko.resources.compose.stringResource
+import com.vitorpamplona.amethyst.commons.resources.Res
+import com.vitorpamplona.amethyst.commons.resources.screen_messages_description
+import com.vitorpamplona.amethyst.commons.resources.screen_messages_title
+import com.vitorpamplona.amethyst.commons.resources.screen_notifications_description
+import com.vitorpamplona.amethyst.commons.resources.screen_notifications_title
+import com.vitorpamplona.amethyst.commons.resources.screen_search_description
+import com.vitorpamplona.amethyst.commons.resources.screen_search_title
+import org.jetbrains.compose.resources.stringResource
 
 /**
  * Generic placeholder screen with title and description.
@@ -60,8 +66,8 @@ fun PlaceholderScreen(
 @Composable
 fun SearchPlaceholder(modifier: Modifier = Modifier) {
     PlaceholderScreen(
-        title = stringResource(SharedRes.strings.screen_search_title),
-        description = stringResource(SharedRes.strings.screen_search_description),
+        title = stringResource(Res.string.screen_search_title),
+        description = stringResource(Res.string.screen_search_description),
         modifier = modifier,
     )
 }
@@ -72,8 +78,8 @@ fun SearchPlaceholder(modifier: Modifier = Modifier) {
 @Composable
 fun MessagesPlaceholder(modifier: Modifier = Modifier) {
     PlaceholderScreen(
-        title = stringResource(SharedRes.strings.screen_messages_title),
-        description = stringResource(SharedRes.strings.screen_messages_description),
+        title = stringResource(Res.string.screen_messages_title),
+        description = stringResource(Res.string.screen_messages_description),
         modifier = modifier,
     )
 }
@@ -84,8 +90,8 @@ fun MessagesPlaceholder(modifier: Modifier = Modifier) {
 @Composable
 fun NotificationsPlaceholder(modifier: Modifier = Modifier) {
     PlaceholderScreen(
-        title = stringResource(SharedRes.strings.screen_notifications_title),
-        description = stringResource(SharedRes.strings.screen_notifications_description),
+        title = stringResource(Res.string.screen_notifications_title),
+        description = stringResource(Res.string.screen_notifications_description),
         modifier = modifier,
     )
 }