fix: import target picker uses the standard grouped-list format

The 'Add to calendar' picker rendered bare OptionCards with no calendar
colour and no account grouping. Reuse the same account-grouped GroupedRow
layout as the event editor's calendar picker — coloured chip per calendar,
account sub-headers, a check on the selected row — so it matches the rest
of the app.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/src/main/java/de/jeanlucmakiola/calendula/ui/imports/ImportScreen.kt

@@ -10,6 +10,7 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.material3.Button
 import androidx.compose.material3.CircularProgressIndicator
@@ -38,8 +39,10 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import de.jeanlucmakiola.calendula.R
 import de.jeanlucmakiola.calendula.domain.EventForm
 import de.jeanlucmakiola.calendula.domain.ics.IcsParseWarning
+import de.jeanlucmakiola.calendula.ui.common.CalendarColorChip
+import de.jeanlucmakiola.calendula.ui.common.GroupedRow
+import de.jeanlucmakiola.calendula.ui.common.positionOf
 import de.jeanlucmakiola.calendula.ui.common.predictiveBack
-import de.jeanlucmakiola.calendula.ui.common.OptionCard
 
 /**
  * Handles an opened/received `.ics` file. A single event is handed straight to
@@ -106,33 +109,73 @@ private fun ManyContent(state: ImportUiState.Many, onImport: (Long) -> Unit) {
     }
     var selected by rememberSaveable { mutableStateOf(state.calendars.first().id) }
 
+    // Group by owning account, the same shape the event editor's calendar picker
+    // uses — coloured chip per calendar, a check on the selected one.
+    val groups = remember(state.calendars) {
+        state.calendars
+            .groupBy {
+                it.accountName.takeIf(String::isNotBlank)
+                    ?: it.accountType.takeIf(String::isNotBlank)
+                    ?: it.displayName
+            }
+            .toList()
+    }
+
     Column(
         Modifier.fillMaxSize().verticalScroll(rememberScrollState())
-            .padding(horizontal = 16.dp, vertical = 8.dp),
-        verticalArrangement = Arrangement.spacedBy(8.dp),
+            .padding(vertical = 8.dp),
     ) {
         Text(
             pluralStringResource(R.plurals.import_event_count, state.events.size, state.events.size),
             style = MaterialTheme.typography.bodyLarge,
-            modifier = Modifier.padding(vertical = 8.dp),
+            modifier = Modifier.padding(horizontal = 24.dp, vertical = 8.dp),
         )
         Text(
             stringResource(R.string.import_target_header),
-            style = MaterialTheme.typography.labelLarge,
-            color = MaterialTheme.colorScheme.primary,
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.padding(start = 24.dp, end = 24.dp, bottom = 4.dp),
         )
-        state.calendars.forEach { calendar ->
-            OptionCard(
-                label = calendar.displayName,
-                onClick = { selected = calendar.id },
-                selected = calendar.id == selected,
-                icon = null,
+        groups.forEach { (account, cals) ->
+            Text(
+                text = account,
+                style = MaterialTheme.typography.labelLarge,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.padding(start = 24.dp, end = 24.dp, top = 16.dp, bottom = 4.dp),
             )
+            cals.forEachIndexed { index, calendar ->
+                val isSelected = calendar.id == selected
+                GroupedRow(
+                    title = calendar.displayName,
+                    position = positionOf(index, cals.size),
+                    selected = isSelected,
+                    leading = { CalendarColorChip(calendar.color) },
+                    trailing = if (isSelected) {
+                        {
+                            Icon(
+                                imageVector = Icons.Default.Check,
+                                contentDescription = null,
+                                tint = MaterialTheme.colorScheme.primary,
+                            )
+                        }
+                    } else {
+                        null
+                    },
+                    onClick = { selected = calendar.id },
+                )
+            }
+        }
+        if (state.warnings.isNotEmpty()) {
+            Column(
+                Modifier.padding(horizontal = 24.dp, vertical = 8.dp),
+                verticalArrangement = Arrangement.spacedBy(4.dp),
+            ) {
+                state.warnings.forEach { WarningText(it) }
+            }
         }
-        state.warnings.forEach { WarningText(it) }
         Button(
             onClick = { onImport(selected) },
-            modifier = Modifier.fillMaxWidth().padding(top = 8.dp),
+            modifier = Modifier.fillMaxWidth().padding(start = 16.dp, end = 16.dp, top = 8.dp),
         ) {
             Text(pluralStringResource(R.plurals.import_action, state.events.size, state.events.size))
         }