feat(home): tap opens detail, long-press plays from home cards

Home carousel cards route a tap to the item's detail / Episode Focus
View and a ~500ms long-press to a confirm-then-play flow. MediaCard gains
an onLongPress prop with pointer-based detection (cancelled on >10px move
so carousel scroll is unaffected, trailing click suppressed). Episode
taps route to /library/<seriesId>?episode=<id>; the bare-episode detail
page links back to its parent series/season.

TRACES: UR-058 | DR-087

src/lib/components/home/Carousel.svelte

@@ -7,10 +7,11 @@
     title: string;
     items: MediaItem[];
     onItemClick?: (item: MediaItem) => void;
+    onItemLongPress?: (item: MediaItem) => void;
     showAll?: () => void;
   }
 
-  let { title, items, onItemClick, showAll }: Props = $props();
+  let { title, items, onItemClick, onItemLongPress, showAll }: Props = $props();
 
   let scrollContainer: HTMLDivElement | null = $state(null);
   let showLeftArrow = $state(false);
@@ -60,6 +61,7 @@
           size="medium"
           showProgress={true}
           onclick={() => onItemClick?.(item)}
+          onLongPress={onItemLongPress ? () => onItemLongPress(item) : undefined}
         />
       {/each}
     </div>

src/lib/components/library/MediaCard.svelte

@@ -30,9 +30,69 @@
      */
     onRemove?: () => void;
     onclick?: () => void;
+    /**
+     * When set, a long press (touch hold / mouse hold) fires this instead of the
+     * regular tap. The tap that would otherwise follow the release is suppressed.
+     * Used on the home page: tap opens the detail page, long-press plays now.
+     * TRACES: UR-058 | DR-087
+     */
+    onLongPress?: () => void;
   }
 
-  let { item, size = "medium", showProgress = false, showDownloadStatus = true, sizeLabel, downloadedBadge, onRemove, onclick }: Props = $props();
+  let { item, size = "medium", showProgress = false, showDownloadStatus = true, sizeLabel, downloadedBadge, onRemove, onclick, onLongPress }: Props = $props();
+
+  // Long-press detection. We arm a timer on pointerdown; if it fires before the
+  // pointer is released (or moves too far), we treat it as a long press and set a
+  // flag so the ensuing click is swallowed. Pointer events cover touch + mouse.
+  const LONG_PRESS_MS = 500;
+  const MOVE_CANCEL_PX = 10;
+  let pressTimer: ReturnType<typeof setTimeout> | null = null;
+  let longPressFired = false;
+  let pressStartX = 0;
+  let pressStartY = 0;
+
+  function clearPressTimer() {
+    if (pressTimer !== null) {
+      clearTimeout(pressTimer);
+      pressTimer = null;
+    }
+  }
+
+  function handlePointerDown(e: PointerEvent) {
+    if (!onLongPress || isServerOnly) return;
+    longPressFired = false;
+    pressStartX = e.clientX;
+    pressStartY = e.clientY;
+    clearPressTimer();
+    pressTimer = setTimeout(() => {
+      longPressFired = true;
+      pressTimer = null;
+      onLongPress?.();
+    }, LONG_PRESS_MS);
+  }
+
+  function handlePointerMove(e: PointerEvent) {
+    if (pressTimer === null) return;
+    if (
+      Math.abs(e.clientX - pressStartX) > MOVE_CANCEL_PX ||
+      Math.abs(e.clientY - pressStartY) > MOVE_CANCEL_PX
+    ) {
+      clearPressTimer();
+    }
+  }
+
+  function handlePointerUp() {
+    clearPressTimer();
+  }
+
+  function handleClick() {
+    // A long press already handled this interaction; swallow the trailing click.
+    if (longPressFired) {
+      longPressFired = false;
+      return;
+    }
+    onclick?.();
+  }
 
   // Check if this item is downloaded
   const downloadInfo = $derived(
@@ -150,7 +210,13 @@
   type={isServerOnly ? undefined : "button"}
   role={isServerOnly ? "group" : undefined}
   class="group/card flex flex-col text-left {sizeClasses[size]} flex-shrink-0 transition-transform duration-200 {isServerOnly ? '' : 'hover:scale-105'}"
-  onclick={isServerOnly ? undefined : onclick}
+  style={onLongPress ? "touch-action: manipulation; -webkit-touch-callout: none;" : undefined}
+  onclick={isServerOnly ? undefined : handleClick}
+  onpointerdown={isServerOnly ? undefined : handlePointerDown}
+  onpointermove={isServerOnly ? undefined : handlePointerMove}
+  onpointerup={isServerOnly ? undefined : handlePointerUp}
+  onpointercancel={isServerOnly ? undefined : handlePointerUp}
+  oncontextmenu={onLongPress ? (e: Event) => e.preventDefault() : undefined}
 >
   <div class="relative {aspectRatio()} w-full rounded-lg overflow-hidden bg-[var(--color-surface)] shadow-md group-hover/card:shadow-2xl transition-shadow duration-200">
     <CachedImage

src/routes/+page.svelte

@@ -56,18 +56,47 @@
     previousServerReachable = serverReachable;
   });
 
+  // Tap → detail page. Non-playable containers already routed to /library; now
+  // movies and episodes go to their detail page too instead of playing straight
+  // away. Channel leaves (no detail page) still go direct to the player.
+  // TRACES: UR-058 | DR-087
   function handleItemClick(item: MediaItem) {
     switch (item.kind) {
-      case "series":
-      case "season":
-      case "album":
-      case "artist":
-      case "folder":
-      case "channel":
-        goto(`/library/${item.id}`);
+      case "channelItem":
+      case "liveChannel":
+        goto(`/player/${item.id}`);
+        break;
+      case "episode":
+        // An episode is never browsed as a bare Episode page — it opens in its
+        // series' Episode Focus View so the series context loads (ux-flows §5B.1).
+        if (item.seriesId) {
+          goto(`/library/${item.seriesId}?episode=${item.id}`);
+        } else {
+          goto(`/library/${item.id}`);
+        }
         break;
       default:
-        goto(`/player/${item.id}`);
+        goto(`/library/${item.id}`);
+        break;
+    }
+  }
+
+  // Long press → play immediately, confirming first so an accidental hold on a
+  // half-watched item doesn't blow away the user's spot without warning.
+  // TRACES: UR-058 | DR-087
+  function handleItemLongPress(item: MediaItem) {
+    switch (item.kind) {
+      case "movie":
+      case "episode":
+      case "channelItem":
+      case "liveChannel":
+        if (confirm(`Play "${item.name}" now?`)) {
+          goto(`/player/${item.id}`);
+        }
+        break;
+      default:
+        // Containers (series/season/album/…) have no single "play now" target.
+        goto(`/library/${item.id}`);
         break;
     }
   }
@@ -145,6 +174,7 @@
         title="Next Movie"
         items={resumeMovies}
         onItemClick={handleItemClick}
+        onItemLongPress={handleItemLongPress}
       />
     {/if}
 
@@ -154,6 +184,7 @@
         title="Next Episode"
         items={nextUpItems}
         onItemClick={handleItemClick}
+        onItemLongPress={handleItemLongPress}
       />
     {/if}
 
@@ -163,6 +194,7 @@
         title="Recently Listened"
         items={recentlyPlayedAudio}
         onItemClick={handleItemClick}
+        onItemLongPress={handleItemLongPress}
       />
     {/if}
 
@@ -172,6 +204,7 @@
         title="Continue Watching"
         items={resumeItems}
         onItemClick={handleItemClick}
+        onItemLongPress={handleItemLongPress}
       />
     {/if}
 
@@ -181,6 +214,7 @@
         title="Recently Added"
         items={latestItems}
         onItemClick={handleItemClick}
+        onItemLongPress={handleItemLongPress}
       />
     {/if}
 

src/routes/library/[id]/+page.svelte

@@ -381,12 +381,29 @@
         <div class="flex-1 space-y-4">
           <div>
             <h1 class="text-3xl font-bold text-white">{item.name}</h1>
-            {#if item.kind === "episode" && (item.parentIndexNumber || item.indexNumber)}
-              <p class="text-lg text-gray-400 mt-1">
-                {#if item.parentIndexNumber}Season {item.parentIndexNumber}{/if}
-                {#if item.parentIndexNumber && item.indexNumber}, {/if}
-                {#if item.indexNumber}Episode {item.indexNumber}{/if}
-              </p>
+            {#if item.kind === "episode"}
+              <!-- Links back to the parent series/season so the episode detail
+                   page is a navigable hub, not a dead end. TRACES: UR-058 | DR-087 -->
+              {#if item.seriesId && item.seriesName}
+                <p class="text-lg mt-1">
+                  <a
+                    href={`/library/${item.seriesId}`}
+                    class="text-[var(--color-jellyfin)] hover:underline"
+                  >{item.seriesName}</a>
+                </p>
+              {/if}
+              {#if item.parentIndexNumber || item.indexNumber}
+                <p class="text-lg text-gray-400 mt-1">
+                  {#if item.seasonId && item.parentIndexNumber}
+                    <a
+                      href={`/library/${item.seasonId}`}
+                      class="hover:underline hover:text-[var(--color-jellyfin)] transition-colors"
+                    >Season {item.parentIndexNumber}</a>
+                  {:else if item.parentIndexNumber}Season {item.parentIndexNumber}{/if}
+                  {#if item.parentIndexNumber && item.indexNumber}, {/if}
+                  {#if item.indexNumber}Episode {item.indexNumber}{/if}
+                </p>
+              {/if}
             {:else if item.artistItems?.length || item.artists?.length}
               <p class="text-lg text-gray-400 mt-1">
                 <ArtistLinks