Split software arch desc for easier manintenance. Many fixes related to next video playing and remote playback

src/lib/stores/playbackMode.ts

@@ -255,10 +255,14 @@ function createPlaybackModeStore() {
   }
 
   /**
-   * Monitor remote session for disconnection
+   * Monitor remote session for disconnection with grace period.
+   * Requires multiple consecutive misses before declaring disconnection
+   * to tolerate transient network hiccups.
    */
   function initializeSessionMonitoring(): void {
-    // Subscribe to session changes
+    let consecutiveMisses = 0;
+    const DISCONNECT_THRESHOLD = 3; // ~6s at 2s polling interval
+
     selectedSession.subscribe((session) => {
       const currentState = get({ subscribe });
 
@@ -266,14 +270,28 @@ function createPlaybackModeStore() {
       // Don't interfere during an active transfer (we intentionally clear the session)
       if (currentState.mode === "remote" && currentState.remoteSessionId && !currentState.isTransferring) {
         if (!session || session.id !== currentState.remoteSessionId || !session.supportsMediaControl) {
-          console.warn("[PlaybackMode] Remote session lost or disconnected");
-          update((s) => ({
-            ...s,
-            mode: "idle",
-            remoteSessionId: null,
-            transferError: "Remote session disconnected",
-          }));
+          consecutiveMisses++;
+          console.warn(`[PlaybackMode] Remote session miss ${consecutiveMisses}/${DISCONNECT_THRESHOLD}`);
+
+          if (consecutiveMisses >= DISCONNECT_THRESHOLD) {
+            console.warn("[PlaybackMode] Remote session lost after sustained disconnection");
+            consecutiveMisses = 0;
+            update((s) => ({
+              ...s,
+              mode: "idle",
+              remoteSessionId: null,
+              transferError: "Remote session disconnected",
+            }));
+          }
+        } else {
+          // Session is healthy, reset counter
+          if (consecutiveMisses > 0) {
+            console.log("[PlaybackMode] Remote session recovered after", consecutiveMisses, "misses");
+          }
+          consecutiveMisses = 0;
         }
+      } else {
+        consecutiveMisses = 0;
       }
     });
   }

src/lib/stores/player.ts

@@ -228,15 +228,20 @@ export const mergedVolume = derived(
 /**
  * Should show audio miniplayer - state machine gated
  * Only true when:
- * 1. Player is in playing or paused state (not idle, loading, error)
- * 2. Current media is audio (not video: Movie or Episode)
+ * 1. In remote mode with an active session playing media, OR
+ * 2. Player is in playing or paused state (not idle, loading, error)
+ *    AND current media is audio (not video: Movie or Episode)
  */
 export const shouldShowAudioMiniPlayer = derived(
-  [player, currentMedia],
-  ([$player, $media]) => {
-    const state = $player.state;
+  [player, currentMedia, isRemoteMode, selectedSession],
+  ([$player, $media, $isRemote, $session]) => {
+    // In remote mode, show if the remote session has a now-playing item
+    if ($isRemote && $session?.nowPlayingItem) {
+      return true;
+    }
 
-    // Only show when actively playing or paused
+    // Local mode: only show when actively playing or paused
+    const state = $player.state;
     if (state.kind !== "playing" && state.kind !== "paused") {
       return false;
     }