fix: dashcam auto-loads + compact card style for both sections

- LaunchedEffect auto-refreshes on tab open (no more manual refresh needed)
- Imported Videos card matches USB Dashcam compact style
- Removed bulky Refresh button from imported videos

android/app/src/main/java/com/yarisobd/app/DashcamScreen.kt

@@ -31,6 +31,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.Download
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -63,6 +64,9 @@ fun DashcamScreen(
     onImport: (List<String>?) -> Unit,
 ) {
     Column(modifier = Modifier.fillMaxSize()) {
+
+        // Auto-refresh on first load
+        LaunchedEffect(Unit) { onRefresh() }
         com.yarisobd.app.ui.components.YarisHeader()
 
         // USB Dashcam section
@@ -92,51 +96,16 @@ fun DashcamScreen(
             }
         }
 
-        // Header card
+        // Imported videos card — match USB dashcam style
         Card(
-            modifier = Modifier
-                .fillMaxWidth()
-                .padding(16.dp),
-            colors = CardDefaults.cardColors(
-                containerColor = MaterialTheme.colorScheme.surfaceContainerHigh
-            )
+            modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 4.dp),
+            colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceContainerHigh)
         ) {
-            Column(modifier = Modifier.padding(16.dp)) {
-                Text(
-                    text = "Dashcam Videos",
-                    style = MaterialTheme.typography.titleLarge,
-                    color = MaterialTheme.colorScheme.primary
-                )
-                Spacer(modifier = Modifier.height(4.dp))
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    Text(
-                        text = "${videos.size} files",
-                        style = MaterialTheme.typography.bodyMedium,
-                        color = MaterialTheme.colorScheme.onSurface
-                    )
-                    Text(
-                        text = formatBytes(totalSize),
-                        style = MaterialTheme.typography.bodyMedium,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant
-                    )
-                }
+            Column(modifier = Modifier.padding(12.dp)) {
+                Text("Imported Videos", style = MaterialTheme.typography.titleSmall, color = MaterialTheme.colorScheme.primary)
+                Text("${videos.size} files · ${formatBytes(totalSize)}", style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
                 if (retentionDays > 0) {
-                    Text(
-                        text = "Auto-delete after ${retentionDays}d (if uploaded)",
-                        style = MaterialTheme.typography.bodySmall,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant
-                    )
-                }
-                Spacer(modifier = Modifier.height(8.dp))
-                Button(
-                    onClick = onRefresh,
-                    enabled = !isLoading,
-                    modifier = Modifier.fillMaxWidth()
-                ) {
-                    Text(if (isLoading) "Loading..." else "Refresh")
+                    Text("Auto-delete after ${retentionDays}d", style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
                 }
             }
         }