fix: enforce start size through SwiftUI window constraints

Sources/App/TerebiApp.swift

@@ -33,6 +33,7 @@ final class PlayerModel: ObservableObject {
     @Published private(set) var commandError: String?
     @Published private(set) var queue = PlaybackQueue()
     @Published private(set) var recentMedia: [PlaybackProgress.RecentMedia] = []
+    @Published private(set) var startContentHeight: CGFloat = 400
     @Published var showsQueue = false {
         didSet {
             if showsQueue != oldValue { transitionQueue() }
@@ -827,6 +828,7 @@ final class PlayerModel: ObservableObject {
 
     func attachWindow(_ window: NSWindow) {
         guard self.window !== window else { return }
+        startContentHeight = 400 - (window.frame.height - window.contentLayoutRect.height)
         finishQueueTransition()
         self.window = window
         window.title = fileName ?? "Terebi"
@@ -2756,6 +2758,7 @@ private struct PlayerContent: View {
 
     var body: some View {
         let titleControlsVisible = model.showsQueue || model.isQueueTransitioning || model.controlsVisible
+        let startScreen = model.fileName == nil && !model.isCompact && !model.compactWindow.isTransitioning
         HStack(spacing: 0) {
             videoContent
             if !model.isCompact && !model.compactWindow.isTransitioning && model.queueWidth > 0 {
@@ -2766,8 +2769,10 @@ private struct PlayerContent: View {
                     .accessibilityHidden(!model.showsQueue)
             }
         }
-        .frame(minWidth: model.isCompact || model.compactWindow.isTransitioning ? 160 : 400 + model.queueWidth,
-               minHeight: model.isCompact || model.compactWindow.isTransitioning ? model.compactContentMinimumHeight : 240)
+        .frame(minWidth: startScreen ? 640 : (model.isCompact || model.compactWindow.isTransitioning ? 160 : 400 + model.queueWidth),
+               maxWidth: startScreen ? 640 : .infinity,
+               minHeight: startScreen ? model.startContentHeight : (model.isCompact || model.compactWindow.isTransitioning ? model.compactContentMinimumHeight : 240),
+               maxHeight: startScreen ? model.startContentHeight : .infinity)
         .overlay(alignment: .topTrailing) {
             if !model.isCompact && !model.compactWindow.isTransitioning {
                 titleControls
@@ -3143,7 +3148,8 @@ struct TerebiApp: App {
             PlayerContent(model: model)
                 .focusedSceneObject(model)
         }
-        .defaultSize(width: 900, height: 560)
+        .defaultSize(width: 640, height: 400)
+        .windowResizability(.contentSize)
         .windowStyle(.hiddenTitleBar)
         .commands { PlayerCommands() }
     }