fix(display): ✨ relocate a fullscreen VLC window when the output display changes

Changing the playback display did nothing while a video was playing: routeVlc
set the window bounds and re-asserted fullscreen, but a fullscreen VLC window
ignores `set bounds` and `set fullscreen mode to true` is a no-op when already
true — so the video stayed on the original screen.

Drop out of fullscreen first, move the now-normal window onto the target
screen, then re-enter fullscreen there. Verified VLC AppleScript automation is
reachable (get fullscreen mode → true) so this is the missing step, not a perms
issue.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Sources/TVAnarchyCore/Display/DisplayService.swift

@@ -46,13 +46,22 @@ public enum DisplayService {
         #if canImport(AppKit)
         guard let screen = screen(for: display) else { return true }
         let (l, t, r, b) = appleScriptBounds(for: screen)
+        // A fullscreen VLC window can't be relocated: `set bounds` is ignored while
+        // fullscreen and `set fullscreen mode to true` is a no-op when already true,
+        // so a live display switch would otherwise leave the video on the old screen.
+        // Drop out of fullscreen first, move the (now normal) window onto the target
+        // screen, then re-enter fullscreen there.
         let script = """
         tell application "VLC"
             activate
+            try
+                set fullscreen mode to false
+            end try
+            delay 0.3
             try
                 set bounds of window 1 to {\(l), \(t), \(r), \(b)}
             end try
-            delay 0.4
+            delay 0.3
             set fullscreen mode to true
         end tell
         """