Android drawer: tag-view tracking in its own composable (#5931)

detekt's cyclomatic-complexity limit on BoardScreen.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/app/src/main/java/com/fabledsword/inkwell/ui/BoardScreen.kt

@@ -99,15 +99,7 @@ fun BoardScreen(
 ) {
     val drawerState = rememberDrawerState(DrawerValue.Closed)
     val scope = rememberCoroutineScope()
-
+    val views = rememberTagViews(state.destination)
-    // Opening a tag's lens counts as using it, however it was opened: from the
-    // drawer, or a tag on a card (#5931).
-    val context = LocalContext.current
-    val tagViews = remember(context) { TagViews(context) }
-    var views by remember { mutableStateOf(tagViews.all()) }
-    LaunchedEffect(state.destination) {
-        (state.destination as? Destination.WithLabel)?.let { views = tagViews.record(it.id) }
-    }
     val snackbars = remember { SnackbarHostState() }
 
     // Held HERE rather than on the card. A card lives in a lazy grid and is disposed
@@ -410,6 +402,21 @@ private fun SearchBar(
     }
 }
 
+/**
+ * When each tag's lens was last opened here. Opening one counts as using it,
+ * however it was opened: from the drawer, or a tag on a card (#5931).
+ */
+@Composable
+private fun rememberTagViews(destination: Destination): Map<String, Long> {
+    val context = LocalContext.current
+    val tagViews = remember(context) { TagViews(context) }
+    var views by remember { mutableStateOf(tagViews.all()) }
+    LaunchedEffect(destination) {
+        if (destination is Destination.WithLabel) views = tagViews.record(destination.id)
+    }
+    return views
+}
+
 @Composable
 private fun NavigationDrawer(
     current: Destination,