launcher: a POI or other non-media car app gets its own tile, not a Browse tile under Music

RF Sentinel ships a POI car screen plus a media service for its sound, and only
showed up as a music app.

gearslip/src/main/java/app/seb3thehacker/gearslip/car/CarLauncher.kt

@@ -125,7 +125,11 @@ internal object LauncherCache {
         // MediaBrowserService, which otherwise land as two identically-labeled tiles with no
         // way to tell them apart. They're genuinely different screens - browsing versus Now
         // Playing - so only the label needs disambiguating, not the tile itself.
-        val mediaPackages = mediaApps.map { it.component.packageName }.toSet()
+        // An app whose car screen is something else (RF Sentinel is a POI app) only uses its media
+        // service for sound: its car screen gets the tile, under its own name, and no player tile.
+        val otherScreens = navApps.filter { !it.isMediaScreen }.map { it.component.packageName }.toSet()
+        val allMedia = mediaApps.map { it.component.packageName }.toSet()
+        val mediaPackages = allMedia - otherScreens
 
         val messagingApps = MessagingCatalog.installed(context)
         // Google Messages ships its own car app, which won't start under Gearslip. Gearslip's
@@ -142,10 +146,12 @@ internal object LauncherCache {
                 val label = if (it.component.packageName in mediaPackages) "${it.label} · Browse" else it.label
                 Entry(label, iconOf(it.component.packageName), template = it)
             }
-        val media = mediaApps.map { Entry(it.label, iconOf(it.component.packageName), media = it) }
+        val media = mediaApps
+            .filter { it.component.packageName !in otherScreens }
+            .map { Entry(it.label, iconOf(it.component.packageName), media = it) }
         // A messenger that is also a car media app keeps only its player tile.
         val messaging = messagingApps
-            .filter { it.packageName !in mediaPackages }
+            .filter { it.packageName !in allMedia }
             .map { Entry(it.label, iconOf(it.packageName), messaging = it) }
         return (nav + media + messaging).sortedBy { it.label.lowercase() }.also { flow.value = it }
     }

gearslip/src/main/java/app/seb3thehacker/gearslip/host/CarAppCatalog.kt

@@ -13,6 +13,9 @@ class TemplateApp(
 ) {
     val isNavigation: Boolean get() = CarAppService.CATEGORY_NAVIGATION_APP in categories
 
+    /** A media car screen, or one that names no category (older media apps). */
+    val isMediaScreen: Boolean get() = kind == "media" || kind == "app"
+
     /** "navigation", "media", ... - what the app told the system it is. */
     val kind: String
         get() = categories.firstOrNull { it.startsWith(CATEGORY_PREFIX) }