Add feature flag to disable hide shorts functionality

The hide shorts feature is no longer working due to API changes that prevent reliable detection of short videos. This commit introduces a feature flag system to disable the functionality while preserving the ability to easily restore it if the API issue is resolved.

Changes:
- Add FeatureFlags.swift with hideShortsEnabled flag (currently disabled)
- Hide all HideShortsButtons UI elements when flag is disabled
- Disable shorts filtering logic in ContentItemView, FavoriteItemView, and FeedModel
- Preserve hideShorts user preference for future restoration

Shared/FeatureFlags.swift

@@ -0,0 +1,8 @@
+import Foundation
+
+/// Feature flags for enabling/disabling functionality across the app
+enum FeatureFlags {
+    /// Controls whether the "Hide Shorts" functionality is available
+    /// Set to false when the API changes prevent reliable detection of short videos
+    static let hideShortsEnabled = false
+}

Shared/Home/FavoriteItemView.swift

@@ -50,9 +50,11 @@ struct FavoriteItemView: View {
                                 .frame(maxWidth: .infinity, alignment: .leading)
                                 .foregroundColor(.secondary)
 
-                            if hideShorts || hideWatched {
+                            if (FeatureFlags.hideShortsEnabled && hideShorts) || hideWatched {
                                 AccentButton(text: "Disable filters", maxWidth: nil, verticalPadding: 0, minHeight: 30) {
-                                    hideShorts = false
+                                    if FeatureFlags.hideShortsEnabled {
+                                        hideShorts = false
+                                    }
                                     hideWatched = false
                                     reloadVisibleWatches()
                                 }
@@ -107,7 +109,7 @@ struct FavoriteItemView: View {
                     resource?.removeObservers(ownedBy: store)
                 }
                 .onChange(of: player.currentVideo) { _ in if !player.presentingPlayer { reloadVisibleWatches() } }
-                .onChange(of: hideShorts) { _ in if !player.presentingPlayer { reloadVisibleWatches() } }
+                .onChange(of: hideShorts) { _ in if !player.presentingPlayer && FeatureFlags.hideShortsEnabled { reloadVisibleWatches() } }
                 .onChange(of: hideWatched) { _ in if !player.presentingPlayer { reloadVisibleWatches() } }
                 // Delay is necessary to update the list with the new items.
                 .onChange(of: favoritesChanged) { _ in if !player.presentingPlayer { Delay.by(1.0) { reloadVisibleWatches() } } }
@@ -135,9 +137,9 @@ struct FavoriteItemView: View {
 
     var emptyItemsText: String {
         var filterText = ""
-        if hideShorts && hideWatched {
+        if FeatureFlags.hideShortsEnabled && hideShorts && hideWatched {
             filterText = "(watched and shorts hidden)"
-        } else if hideShorts {
+        } else if FeatureFlags.hideShortsEnabled && hideShorts {
             filterText = "(shorts hidden)"
         } else if hideWatched {
             filterText = "(watched hidden)"
@@ -227,7 +229,7 @@ struct FavoriteItemView: View {
             return false
         }
 
-        guard hideShorts, item.contentType == .video, let video = item.video else {
+        guard FeatureFlags.hideShortsEnabled, hideShorts, item.contentType == .video, let video = item.video else {
             return true
         }
 

Shared/Views/ContentItemView.swift

@@ -54,7 +54,7 @@ struct ContentItemView: View {
             return false
         }
 
-        guard hideShorts, item.contentType == .video, let video = item.video else {
+        guard FeatureFlags.hideShortsEnabled, hideShorts, item.contentType == .video, let video = item.video else {
             return true
         }
 

Shared/Views/HideShortsButtons.swift

@@ -5,22 +5,24 @@ struct HideShortsButtons: View {
     @Default(.hideShorts) private var hideShorts
 
     var body: some View {
-        Button {
-            hideShorts.toggle()
-        } label: {
-            Group {
-                if hideShorts {
-                    Label("Short videos: hidden", systemImage: "bolt.slash.fill")
-                        .help("Short videos: hidden")
-                } else {
-                    Label("Short videos: visible", systemImage: "bolt.fill")
-                        .help("Short videos: visible")
+        if FeatureFlags.hideShortsEnabled {
+            Button {
+                hideShorts.toggle()
+            } label: {
+                Group {
+                    if hideShorts {
+                        Label("Short videos: hidden", systemImage: "bolt.slash.fill")
+                            .help("Short videos: hidden")
+                    } else {
+                        Label("Short videos: visible", systemImage: "bolt.fill")
+                            .help("Short videos: visible")
+                    }
                 }
+                #if os(tvOS)
+                .font(.caption)
+                .imageScale(.small)
+                #endif
             }
-            #if os(tvOS)
-            .font(.caption)
-            .imageScale(.small)
-            #endif
         }
     }
 }