feat(m15): local Zune Card on social screen

app/src/main/java/com/heretek/dorado_hd/ui/screens/MediaScreens.kt

@@ -34,6 +34,8 @@ import androidx.compose.foundation.text.BasicTextField
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import com.heretek.dorado_hd.data.model.Rating
+import kotlinx.coroutines.flow.first
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateListOf
@@ -632,10 +634,40 @@ private val FROZEN_FEED = listOf(
     MockPost("mix master mika", "shuffled by album all morning — life-changing.", "november 2012"),
 )
 
+private data class ZuneCard(val tracks: Int, val hearts: Int, val plays: Int)
+
 @Composable
 fun SocialScreen(canvasWidth: androidx.compose.ui.unit.Dp) {
+    val graph = LocalDoradoGraph.current
+    val colors = LocalDoradoColors.current
+    var card by remember { mutableStateOf<ZuneCard?>(null) }
+    LaunchedEffect(Unit) {
+        val tracks = graph.library.tracks().first()
+        val ratings = graph.quickplay.ratings()
+        val plays = graph.playCounts.counts()
+        card = ZuneCard(
+            tracks = tracks.size,
+            hearts = ratings.count { it.value == Rating.HEART.value },
+            plays = plays.values.sum(),
+        )
+    }
     DetailScaffold(title = "social") {
         Column(Modifier.fillMaxSize()) {
+            // Zune Card — the device's GemUserCardScene, as a local substitute
+            // for the dead Zune Social servers.
+            card?.let { c ->
+                Column(
+                    Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = DoradoTokens.EDGE.dp, vertical = 8.dp),
+                ) {
+                    EdgeCropText(text = "zune card", fontSize = DoradoTokens.TYPE_NOW_META.dp, color = colors.accent)
+                    EdgeCropText(
+                        text = "${c.tracks} tracks · ${c.hearts} hearts · ${c.plays} plays",
+                        fontSize = DoradoTokens.TYPE_LIST.dp,
+                    )
+                }
+            }
             EdgeCropText(
                 text = "the social feed is frozen in time.",
                 fontSize = DoradoTokens.TYPE_NOW_META.dp,

docs/parity-roadmap.md

@@ -243,7 +243,7 @@ explicitly documented (long-term / N-A) — no gap unplanned.
 
 - ✅ **D1** Share (`ACTION_SEND`) from Now Playing.
 - ✅ **D3** Marketplace discovery: catalog search + entry details over the frozen catalog.
-- ⏳ **D2** Inbox + social user card (needs a social/inbox backend; mock shells only today).
+- 🟡 **D2** Social user card: a local **Zune Card** (tracks/hearts/plays) on the Social screen; the inbox still needs a backend (mock shell only).
 - ⏳ **D4** Audiobooks (new media model — the largest remaining gap).
 
 ### Long-term backlog (documented, not scheduled)

docs/zune-hd-parity-gaps.json

@@ -145,11 +145,11 @@
       "axis": "device",
       "priority": 12,
       "effort": "M",
-      "status": "missing",
+      "status": "partial",
       "device_evidence": "gemstone.exe GemInboxListContentScene/GemInboxDetailsScene/GemUserCardScene",
       "hd_state": "mock shells only (ui/apps/mocks/Mocks.kt:90)",
-      "milestone": "long-term",
-      "resolution": "Needs a social/inbox backend; mock shells only. Long-term."
+      "milestone": "M15",
+      "resolution": "Local Zune Card (tracks/hearts/plays) shipped (M15); inbox still needs a backend (mock shell only)."
     },
     {
       "id": "pinlock-wifi",