Fix the build: AnimatedVisibility resolved to the RowScope overload

main did not compile. The floating button that brings the columns back sits in
a Box, but that Box is inside the browser's Row, so RowScope was still an
implicit receiver where AnimatedVisibility was called. Kotlin picked
RowScope.AnimatedVisibility — which has no alignment parameter and cannot take
an implicit receiver there — and the Kotlin compile failed.

Moving it into its own composable gives it a scope of its own, so the plain
overload resolves and Modifier.align stays with the Box that provides it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app/src/main/java/com/ganjoor/android/ui/ColumnBrowser.kt

@@ -224,23 +224,37 @@ fun ColumnBrowser(
             }
             // Reader view: the page has the whole screen, and one button, at the edge the
             // columns went to, brings them back as they were.
-            AnimatedVisibility(
+            ShowColumnsButton(
                 visible = hidden,
-                enter = scaleIn() + fadeIn(),
-                exit = scaleOut() + fadeOut(),
+                onShow = { settings.update { it.copy(columnsHidden = false) } },
                 modifier = Modifier
                     .align(Alignment.BottomStart)
                     .navigationBarsPadding()
                     .padding(16.dp),
+            )
+        }
+    }
+}
+
+/**
+ * Brings the columns back from reader view.
+ *
+ * In its own composable because the Box it is placed in sits inside the browser's Row: with
+ * RowScope still an implicit receiver there, `AnimatedVisibility` resolves to the row overload,
+ * which takes no alignment and does not compile. A function of its own has only its own scope.
+ */
+@Composable
+private fun ShowColumnsButton(visible: Boolean, onShow: () -> Unit, modifier: Modifier = Modifier) {
+    AnimatedVisibility(
+        visible = visible,
+        enter = scaleIn() + fadeIn(),
+        exit = scaleOut() + fadeOut(),
+        modifier = modifier,
     ) {
-                SmallFloatingActionButton(
-                    onClick = { settings.update { it.copy(columnsHidden = false) } },
-                ) {
+        SmallFloatingActionButton(onClick = onShow) {
             Icon(Icons.Default.Menu, stringResource(R.string.show_columns))
         }
     }
-        }
-    }
 }
 
 /** Folds the columns away so the page has the whole screen (reader view). */