fix: center controller content and autoplay opened files

Sources/App/PlayerApp.swift

@@ -95,12 +95,11 @@ final class PlayerModel: ObservableObject {
             commandError = "Could not queue the file to open. Please try again."
             return
         }
-        // Open is always paused; never queue play against the previous file.
         pendingRevision = revision
         fileName = url.lastPathComponent
         fileIcon = NSWorkspace.shared.icon(forFile: url.path)
         needsVideoFit = true
-        commandError = nil
+        commandError = player_play(handle) ? nil : "Could not queue playback. Please try again."
         isSeeking = false
         seekPending = false
         seekPosition = 0
@@ -528,7 +527,6 @@ private struct PlayerContent: View {
                 .frame(width: 106, alignment: .trailing)
             }
             .padding(.horizontal, 16)
-            .padding(.top, 14)
 
             HStack(spacing: 10) {
                 Text(time(model.seekPosition)).frame(minWidth: 32, alignment: .trailing)
@@ -553,8 +551,10 @@ private struct PlayerContent: View {
             }
             .font(.system(size: 11).monospacedDigit())
             .padding(.horizontal, 16)
-            .padding(.bottom, 8)
         }
+        .padding(.vertical, 11)
+        // Optical centering accounts for symbol insets and the native seek thumb.
+        .offset(y: -1.5)
         .foregroundStyle(.white.opacity(0.6))
         .onHover(perform: model.setControlsHovered)
     }