feat(android): use Material Outlined LibraryMusic for top-nav Library

Lucide has no music-library glyph — Library / LibraryBig /
SquareLibrary all read as a generic books-on-shelf icon without
a label. Operator picked Material's LibraryMusic (the canonical
"books + music note" symbol used by every major music app) as
the recognizable alternative.

Use the Outlined variant: filled icons would clash with the
neighbouring stroked Lucide icons (House, Search, EllipsisVertical),
but Outlined's stroke style matches Lucide closely enough that
the mix is subtle.

Adds the compose-material-icons-extended dependency (version
pinned by compose-bom). R8 strips unused icons in release builds
so the APK cost is just the ones we actually reference.

android/app/build.gradle.kts

@@ -139,6 +139,7 @@ dependencies {
     implementation(libs.compose.ui)
     implementation(libs.compose.ui.graphics)
     implementation(libs.compose.material3)
+    implementation(libs.compose.material.icons.extended)
     implementation(libs.compose.ui.text.google.fonts)
     debugImplementation(libs.compose.ui.tooling)
     implementation(libs.compose.ui.tooling.preview)

android/app/src/main/java/com/fabledsword/minstrel/shared/widgets/MainAppBarActions.kt

@@ -11,12 +11,13 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.LibraryMusic
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavHostController
 import com.composables.icons.lucide.House
 import com.composables.icons.lucide.Lucide
-import com.composables.icons.lucide.SquareLibrary
 import com.composables.icons.lucide.EllipsisVertical
 import com.composables.icons.lucide.Search as SearchIcon
 import com.fabledsword.minstrel.nav.Admin
@@ -58,7 +59,14 @@ fun MainAppBarActions(
         }
         if (currentRouteName != Library::class.qualifiedName) {
             IconButton(onClick = { navController.navigate(Library) }) {
-                Icon(Lucide.SquareLibrary, contentDescription = "Library")
+                // Intentional cross-family icon — Lucide has no
+                // equivalent "library + music" glyph and the literal
+                // library icons (Library / LibraryBig / SquareLibrary)
+                // don't read as "music collection" without a label.
+                // Material's Outlined LibraryMusic is the canonical
+                // music-library symbol; the outlined variant matches
+                // Lucide's stroke style closely enough to blend.
+                Icon(Icons.Outlined.LibraryMusic, contentDescription = "Library")
             }
         }
         if (currentRouteName != SearchRoute::class.qualifiedName) {

android/gradle/libs.versions.toml

@@ -51,6 +51,11 @@ compose-ui-graphics = { module = "androidx.compose.ui:ui-graphics" }
 compose-ui-tooling = { module = "androidx.compose.ui:ui-tooling" }
 compose-ui-tooling-preview = { module = "androidx.compose.ui:ui-tooling-preview" }
 compose-material3 = { module = "androidx.compose.material3:material3" }
+# material-icons-extended supplies the full Material Icons catalog
+# (Outlined / Filled / Rounded / Sharp / TwoTone). We use the Outlined
+# variant for LibraryMusic — its stroke style blends with Lucide.
+# Version pinned by compose-bom.
+compose-material-icons-extended = { module = "androidx.compose.material:material-icons-extended" }
 compose-ui-text-google-fonts = { module = "androidx.compose.ui:ui-text-google-fonts" }
 hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hilt" }
 hilt-compiler = { module = "com.google.dagger:hilt-compiler", version.ref = "hilt" }