feat(diagnostics): 'playback' kind, newest-first sort, fix active-route subtitle

Relabel (#1204): route + player_state events fire for every output route,
not just UPnP — split them into a new 'playback' kind; 'upnp_sync' now
means genuinely UPnP/Sonos signal (drops, resync). Migration 0037 adds
'playback' to the kind CHECK; server whitelist, Android reporter labels,
and the web kind filter updated.

Web sort: the diagnostics list gains a Newest/Oldest-first sort (default
newest at top); export follows the displayed order.

Fix (#1205): OutputRoute.isConnected was derived from RouteInfo.connectionState,
which stays DISCONNECTED for local SYSTEM routes even when active — so a
connected Bluetooth device showed "Available" and reported connected:false.
The picker subtitle now uses isSelected (route == selected route); the dead
isConnected field is removed and the misleading `connected` field dropped
from the diagnostics route event (it only ever logs the active route).

Refs Scribe M9 (#119), tasks #1204 #1205.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K55iTxn95BtshocgdE1shW

android/app/src/main/java/com/fabledsword/minstrel/diagnostics/DiagnosticsReporter.kt

@@ -147,11 +147,13 @@ class DiagnosticsReporter @Inject constructor(
     }
 
     private suspend fun collectPlayerState() {
+        // 'playback', not 'upnp_sync' — player state applies to every output
+        // route (phone speaker, Bluetooth, UPnP), not just casting.
         playerController.uiState
             .map { Triple(it.currentSource, it.isUpnpLoading, it.playbackError) }
             .distinctUntilChanged()
             .collect { (source, upnpLoading, err) ->
-                record("upnp_sync", buildJsonObject {
+                record("playback", buildJsonObject {
                     put("event", "player_state")
                     put("source", source ?: "")
                     put("upnp_loading", upnpLoading)
@@ -161,14 +163,15 @@ class DiagnosticsReporter @Inject constructor(
     }
 
     private suspend fun collectRoutes() {
+        // 'playback' — route changes happen for all outputs. This only ever
+        // logs the ACTIVE route (routesState.current), so no "connected" flag.
         outputPicker.routesState.map { it.current }.distinctUntilChanged().collect { r ->
-            record("upnp_sync", buildJsonObject {
+            record("playback", buildJsonObject {
                 put("event", "route")
                 put("id", r.id)
                 put("name", r.name)
                 put("kind", r.kind.name)
                 put("protocol", r.protocol.name)
-                put("connected", r.isConnected)
             })
         }
     }

android/app/src/main/java/com/fabledsword/minstrel/player/output/OutputPickerSheet.kt

@@ -133,7 +133,7 @@ private fun RouteRow(
                     maxLines = 2,
                     overflow = TextOverflow.Ellipsis,
                 )
-                val subtitle = route.description ?: defaultSubtitle(route)
+                val subtitle = route.description ?: defaultSubtitle(route, isSelected)
                 Text(
                     text = subtitle,
                     style = MaterialTheme.typography.bodySmall,
@@ -198,10 +198,13 @@ private fun MulticastHintRow() {
     }
 }
 
-private fun defaultSubtitle(route: OutputRoute): String = when (route.kind) {
+// isSelected (route == the active/selected route) drives the Bluetooth
+// "Connected" subtitle. RouteInfo.connectionState can't — it stays
+// DISCONNECTED for local SYSTEM routes even when they're in use.
+private fun defaultSubtitle(route: OutputRoute, isSelected: Boolean): String = when (route.kind) {
     OutputRoute.Kind.BuiltIn -> "Phone speaker"
     OutputRoute.Kind.Wired -> "Wired"
-    OutputRoute.Kind.Bluetooth -> if (route.isConnected) "Connected" else "Available"
+    OutputRoute.Kind.Bluetooth -> if (isSelected) "Connected" else "Available"
     OutputRoute.Kind.Cast -> "Cast"
     OutputRoute.Kind.Other -> "Available"
 }

android/app/src/main/java/com/fabledsword/minstrel/player/output/OutputRoute.kt

@@ -21,7 +21,6 @@ data class OutputRoute(
     val description: String?,
     val kind: Kind,
     val protocol: Protocol,
-    val isConnected: Boolean,
 ) {
     enum class Kind { BuiltIn, Wired, Bluetooth, Cast, Other }
 
@@ -43,9 +42,11 @@ data class OutputRoute(
         /**
          * Lift a MediaRouter [route] into the domain model. Kind is
          * inferred from [MediaRouter.RouteInfo.getDeviceType]; unknown
-         * device types fall through to [Kind.Other]. The
-         * `connectionState` proxy is good enough for the chip's
-         * "Connected"/"Available" subtitle.
+         * device types fall through to [Kind.Other]. "Active" is NOT an
+         * intrinsic of the route — the caller derives it by comparing to
+         * the selected route (RouteSnapshot.current), because
+         * RouteInfo.connectionState only reflects remote-route handshakes
+         * and stays DISCONNECTED for local SYSTEM routes even when in use.
          */
         fun fromRouteInfo(route: MediaRouter.RouteInfo): OutputRoute {
             val kind = when (route.deviceType) {
@@ -58,15 +59,12 @@ data class OutputRoute(
                 MediaRouter.RouteInfo.DEVICE_TYPE_SPEAKER -> Kind.Other
                 else -> Kind.Other
             }
-            val connected =
-                route.connectionState == MediaRouter.RouteInfo.CONNECTION_STATE_CONNECTED
             return OutputRoute(
                 id = route.id,
                 name = route.name,
                 description = route.description,
                 kind = kind,
                 protocol = Protocol.SYSTEM,
-                isConnected = connected,
             )
         }
 
@@ -76,10 +74,10 @@ data class OutputRoute(
          * network speakers into the same `OutputPickerController`
          * routes stream the system routes come through.
          *
-         * `isConnected = false` because UPnP devices have no
-         * MediaRouter connection-state concept — they're always
-         * "available" on the LAN, and the picker's selected-route
-         * rendering handles the "currently playing" indicator.
+         * UPnP devices have no MediaRouter connection-state concept —
+         * they're always "available" on the LAN, and the picker's
+         * selected-route rendering handles the "currently playing"
+         * indicator.
          *
          * Subtitle is `manufacturer modelName` joined by a single
          * space, falling back to "Network speaker" when both fields
@@ -96,7 +94,6 @@ data class OutputRoute(
                 description = description,
                 kind = Kind.Other,
                 protocol = Protocol.UPNP,
-                isConnected = false,
             )
         }
     }