android/app/src/main/java/com/fabledsword/minstrel/library/ui/AlbumDetailScreen.kt

@@ -45,7 +45,6 @@ import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavHostController
-import coil3.compose.AsyncImage
 import com.composables.icons.lucide.ArrowLeft
 import com.composables.icons.lucide.Disc3
 import com.composables.icons.lucide.Lucide
@@ -60,6 +59,7 @@ import com.fabledsword.minstrel.shared.widgets.CachedDot
 import com.fabledsword.minstrel.shared.widgets.EmptyState
 import com.fabledsword.minstrel.shared.widgets.LikeButton
 import com.fabledsword.minstrel.shared.widgets.PullToRefreshScaffold
+import com.fabledsword.minstrel.shared.widgets.ServerImage
 import com.fabledsword.minstrel.shared.widgets.SkeletonTrackRow
 import com.fabledsword.minstrel.shared.widgets.trackactions.TrackActionsButton
 import com.fabledsword.minstrel.shared.widgets.trackactions.TrackActionsViewModel
@@ -290,8 +290,8 @@ private fun AlbumCover(album: AlbumRef) {
                 modifier = Modifier.size(56.dp),
             )
         } else {
-            AsyncImage(
-                model = album.displayCoverUrl,
+            ServerImage(
+                url = album.displayCoverUrl,
                 contentDescription = album.title,
                 modifier = Modifier.fillMaxSize(),
             )

android/app/src/main/java/com/fabledsword/minstrel/library/ui/ArtistDetailScreen.kt

@@ -36,13 +36,11 @@ import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
-import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavHostController
-import coil3.compose.AsyncImage
 import com.composables.icons.lucide.ArrowLeft
 import com.composables.icons.lucide.Lucide
 import com.composables.icons.lucide.Play
@@ -54,6 +52,7 @@ import com.fabledsword.minstrel.nav.AlbumDetail
 import com.fabledsword.minstrel.shared.widgets.EmptyState
 import com.fabledsword.minstrel.shared.widgets.LikeButton
 import com.fabledsword.minstrel.shared.widgets.PullToRefreshScaffold
+import com.fabledsword.minstrel.shared.widgets.ServerImage
 import com.fabledsword.minstrel.shared.widgets.SkeletonAlbumTile
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -206,8 +205,7 @@ private fun ArtistAvatar(artist: ArtistRef, fallbackAlbumId: String? = null) {
     // _ArtistAvatar). Bare Lucide.User only when neither exists.
     val model = when {
         artist.coverUrl.isNotEmpty() -> artist.coverUrl
-        fallbackAlbumId != null ->
-            "http://placeholder.invalid/api/albums/$fallbackAlbumId/cover"
+        fallbackAlbumId != null -> "/api/albums/$fallbackAlbumId/cover"
         else -> null
     }
     Box(
@@ -217,20 +215,17 @@ private fun ArtistAvatar(artist: ArtistRef, fallbackAlbumId: String? = null) {
             .background(MaterialTheme.colorScheme.surfaceVariant),
         contentAlignment = Alignment.Center,
     ) {
-        if (model == null) {
+        ServerImage(
+            url = model,
+            contentDescription = artist.name,
+            modifier = Modifier.fillMaxSize(),
+        ) {
             Icon(
                 imageVector = Lucide.User,
                 contentDescription = null,
                 tint = MaterialTheme.colorScheme.onSurfaceVariant,
                 modifier = Modifier.size(40.dp),
             )
-        } else {
-            AsyncImage(
-                model = model,
-                contentDescription = artist.name,
-                modifier = Modifier.fillMaxSize(),
-                contentScale = ContentScale.Crop,
-            )
         }
     }
 }

android/app/src/main/java/com/fabledsword/minstrel/library/widgets/AlbumCard.kt

@@ -19,15 +19,14 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
-import coil3.compose.AsyncImage
 import com.composables.icons.lucide.Disc3
 import com.composables.icons.lucide.Lucide
 import androidx.compose.material3.Icon
 import com.fabledsword.minstrel.models.AlbumRef
 import com.fabledsword.minstrel.nav.LocalDetailSeedCache
+import com.fabledsword.minstrel.shared.widgets.ServerImage
 import com.fabledsword.minstrel.theme.FabledSwordFlatTokens
 
 /**
@@ -69,18 +68,13 @@ fun AlbumCard(
                         modifier = Modifier.size(56.dp),
                     )
                 } else {
-                    // Use displayCoverUrl so cached-only albums (which
-                    // drop coverUrl in the entity→domain mapper) still
-                    // hit /api/albums/{id}/cover via the BaseUrlInterceptor
-                    // placeholder rewrite. On load failure (album with
-                    // no cover server-side) the Box's surfaceVariant
-                    // background shows through — a Disc3 error-slot
-                    // fallback is a future refinement.
-                    AsyncImage(
-                        model = album.displayCoverUrl,
+                    // displayCoverUrl yields /api/albums/{id}/cover —
+                    // relative on fresh fetches, placeholder-absolute from
+                    // cache. ServerImage resolves both to a loadable URL.
+                    ServerImage(
+                        url = album.displayCoverUrl,
                         contentDescription = album.title,
                         modifier = Modifier.fillMaxSize(),
-                        contentScale = ContentScale.Crop,
                     )
                 }
             }

android/app/src/main/java/com/fabledsword/minstrel/playlists/widgets/PlaylistCard.kt

@@ -19,14 +19,13 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
-import coil3.compose.AsyncImage
 import com.composables.icons.lucide.ListMusic
 import com.composables.icons.lucide.Lucide
 import com.fabledsword.minstrel.models.PlaylistRef
 import com.fabledsword.minstrel.nav.LocalDetailSeedCache
+import com.fabledsword.minstrel.shared.widgets.ServerImage
 import com.fabledsword.minstrel.theme.FabledSwordFlatTokens
 
 /**
@@ -61,20 +60,17 @@ fun PlaylistCard(
                     .clip(RoundedCornerShape(FabledSwordFlatTokens.radiusSm)),
                 contentAlignment = Alignment.Center,
             ) {
-                if (playlist.coverUrl.isEmpty()) {
+                ServerImage(
+                    url = playlist.coverUrl,
+                    contentDescription = playlist.name,
+                    modifier = Modifier.fillMaxSize(),
+                ) {
                     Icon(
                         imageVector = Lucide.ListMusic,
                         contentDescription = null,
                         tint = MaterialTheme.colorScheme.onSurfaceVariant,
                         modifier = Modifier.size(56.dp),
                     )
-                } else {
-                    AsyncImage(
-                        model = playlist.coverUrl,
-                        contentDescription = playlist.name,
-                        modifier = Modifier.fillMaxSize(),
-                        contentScale = ContentScale.Crop,
-                    )
                 }
                 if (playlist.isSystem) {
                     VariantPill(

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

@@ -0,0 +1,56 @@
+package com.fabledsword.minstrel.shared.widgets
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.layout.ContentScale
+import coil3.compose.AsyncImage
+
+/**
+ * Resolves a server image/cover URL into something Coil can load.
+ *
+ * The server returns **relative** cover URLs (e.g.
+ * `/api/albums/{id}/cover`, `/api/playlists/{id}/cover`). Coil can't
+ * load a host-less path, so we prefix the `placeholder.invalid` host
+ * that `BaseUrlInterceptor` rewrites to the live server (carrying the
+ * session cookie). Absolute `http(s)` URLs — including ones already
+ * built against the placeholder host — pass through unchanged; blank
+ * input returns null so the caller renders its own fallback.
+ *
+ * This is the single place a server URL becomes loadable, mirroring
+ * Flutter's `ServerImage._resolve` (which prepends the base URL).
+ * Cover surfaces must route through [ServerImage] rather than handing
+ * a raw `coverUrl` to `AsyncImage` — that was the bug where relative
+ * URLs from fresh fetches silently failed to load.
+ */
+fun resolveServerImageUrl(raw: String?): String? = when {
+    raw.isNullOrBlank() -> null
+    raw.startsWith("http://") || raw.startsWith("https://") -> raw
+    raw.startsWith("/") -> "http://placeholder.invalid$raw"
+    else -> "http://placeholder.invalid/$raw"
+}
+
+/**
+ * Renders a server-hosted image, resolving relative URLs centrally so
+ * every cover surface loads consistently. Shows [fallback] when the URL
+ * is blank or unresolvable.
+ */
+@Composable
+fun ServerImage(
+    url: String?,
+    contentDescription: String?,
+    modifier: Modifier = Modifier,
+    contentScale: ContentScale = ContentScale.Crop,
+    fallback: @Composable () -> Unit = {},
+) {
+    val resolved = resolveServerImageUrl(url)
+    if (resolved == null) {
+        fallback()
+    } else {
+        AsyncImage(
+            model = resolved,
+            contentDescription = contentDescription,
+            modifier = modifier,
+            contentScale = contentScale,
+        )
+    }
+}