fix(android): Settings column wasn't scrolling

Adding the new Profile / Password / ListenBrainz / Update-check
cards pushed AppearanceCard / StorageCard / AboutCard / Sign-out
button off the bottom of the viewport on any normal phone. The
column was fillMaxSize without verticalScroll, so they were
unreachable.

User reported: 'I can't find the light/dark theme controls
anymore. The settings menu looks like it should scroll but
doesn't.' AppearanceCard is at position ~9 in the column, well
past the fold on a typical device.

Single-line fix: add verticalScroll(rememberScrollState()) to
the column's modifier chain.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/app/src/main/java/com/fabledsword/minstrel/settings/ui/SettingsScreen.kt

@@ -1,6 +1,8 @@
 package com.fabledsword.minstrel.settings.ui
 
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -87,6 +89,7 @@ fun SettingsScreen(
             modifier = Modifier
                 .fillMaxSize()
                 .padding(inner)
+                .verticalScroll(rememberScrollState())
                 .padding(16.dp),
             verticalArrangement = Arrangement.spacedBy(16.dp),
         ) {