Fix window movability regression

Resources/InfoPlist.xcstrings

@@ -16,6 +16,102 @@
             "state": "translated",
             "value": "cmux 内で実行中のプログラムが、パスキーとセキュリティキーを検出するために Bluetooth の使用を求めています。"
           }
+        },
+        "zh-Hans": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "在 cmux 中运行的程序想要使用蓝牙来发现通行密钥和安全密钥。"
+          }
+        },
+        "zh-Hant": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "在 cmux 中執行的程式想要使用藍牙來探索通行密鑰和安全密鑰。"
+          }
+        },
+        "ko": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "cmux 내에서 실행 중인 프로그램이 패스키와 보안 키를 찾기 위해 Bluetooth를 사용하려고 합니다."
+          }
+        },
+        "de": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Ein in cmux ausgeführtes Programm möchte Bluetooth verwenden, um Passkeys und Sicherheitsschlüssel zu finden."
+          }
+        },
+        "es": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programa en ejecución dentro de cmux quiere usar Bluetooth para descubrir llaves de acceso y claves de seguridad."
+          }
+        },
+        "fr": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programme s'exécutant dans cmux souhaite utiliser le Bluetooth pour détecter des clés d’accès et des clés de sécurité."
+          }
+        },
+        "it": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programma in esecuzione in cmux desidera usare il Bluetooth per rilevare passkey e chiavi di sicurezza."
+          }
+        },
+        "da": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Et program, der kører i cmux, vil gerne bruge Bluetooth til at finde adgangsnøgler og sikkerhedsnøgler."
+          }
+        },
+        "pl": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Program działający w cmux chciałby użyć Bluetooth do wykrywania kluczy dostępu i kluczy zabezpieczeń."
+          }
+        },
+        "ru": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Программа, запущенная в cmux, хотела бы использовать Bluetooth для обнаружения ключей доступа и ключей безопасности."
+          }
+        },
+        "bs": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Program koji se izvršava unutar cmux želi koristiti Bluetooth za otkrivanje pristupnih ključeva i sigurnosnih ključeva."
+          }
+        },
+        "ar": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "يرغب برنامج يعمل داخل cmux في استخدام Bluetooth لاكتشاف مفاتيح المرور ومفاتيح الأمان."
+          }
+        },
+        "nb": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Et program som kjører i cmux ønsker å bruke Bluetooth til å finne passnøkler og sikkerhetsnøkler."
+          }
+        },
+        "pt-BR": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Um programa em execução no cmux gostaria de usar Bluetooth para descobrir chaves de acesso e chaves de segurança."
+          }
+        },
+        "th": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "โปรแกรมที่ทำงานภายใน cmux ต้องการใช้ Bluetooth เพื่อค้นหาพาสคีย์และคีย์ความปลอดภัย"
+          }
+        },
+        "tr": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "cmux içinde çalışan bir program geçiş anahtarlarını ve güvenlik anahtarlarını bulmak için Bluetooth kullanmak istiyor."
+          }
         }
       }
     },
@@ -33,6 +129,102 @@
             "state": "translated",
             "value": "cmux 内で実行中のプログラムがカメラの使用を求めています。"
           }
+        },
+        "zh-Hans": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "在 cmux 中运行的程序想要使用您的摄像头。"
+          }
+        },
+        "zh-Hant": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "在 cmux 中執行的程式想要使用您的相機。"
+          }
+        },
+        "ko": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "cmux 내에서 실행 중인 프로그램이 카메라를 사용하려고 합니다."
+          }
+        },
+        "de": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Ein in cmux ausgeführtes Programm möchte Ihre Kamera verwenden."
+          }
+        },
+        "es": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programa en ejecución dentro de cmux desea usar tu cámara."
+          }
+        },
+        "fr": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programme s'exécutant dans cmux souhaite utiliser votre caméra."
+          }
+        },
+        "it": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Un programma in esecuzione in cmux desidera utilizzare la fotocamera."
+          }
+        },
+        "da": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Et program, der kører i cmux, vil gerne bruge dit kamera."
+          }
+        },
+        "pl": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Program działający w cmux chciałby użyć Twojej kamery."
+          }
+        },
+        "ru": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Программа, запущенная в cmux, хотела бы использовать вашу камеру."
+          }
+        },
+        "bs": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Program koji se izvršava unutar cmux želi koristiti vašu kameru."
+          }
+        },
+        "ar": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "يرغب برنامج يعمل داخل cmux في استخدام الكاميرا."
+          }
+        },
+        "nb": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Et program som kjører i cmux ønsker å bruke kameraet ditt."
+          }
+        },
+        "pt-BR": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "Um programa em execução no cmux gostaria de usar sua câmera."
+          }
+        },
+        "th": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "โปรแกรมที่ทำงานภายใน cmux ต้องการใช้กล้องของคุณ"
+          }
+        },
+        "tr": {
+          "stringUnit": {
+            "state": "translated",
+            "value": "cmux içinde çalışan bir program kameranızı kullanmak istiyor."
+          }
         }
       }
     },

Sources/App/CmuxMainWindow.swift

@@ -28,10 +28,35 @@ final class MainWindowHostingView<Content: View>: NSHostingView<Content> {
     }
 }
 
+/// Applies the main-window AppKit movability baseline for the active presentation mode.
+///
+/// Standard mode keeps native OS-level window movability enabled for macOS
+/// tiling and third-party window managers. Minimal mode disables native
+/// movability so cmux-owned chrome can decide exactly when to call
+/// `performDrag`. If a protected drag suppression sequence is active, the
+/// window remains immovable and only the post-suppression restore baseline is
+/// updated.
 @MainActor
-func configureCmuxMainWindowDragBehavior(_ window: NSWindow) {
+func configureCmuxMainWindowDragBehavior(
+    _ window: NSWindow,
+    defaults: UserDefaults = .standard
+) {
+    // Keep background dragging disabled so app content gestures and titlebar
+    // controls receive clicks. In standard mode, leave the OS-level movable bit
+    // enabled for macOS tiling and third-party window managers. In minimal mode,
+    // there is no native titlebar: app-owned chrome must explicitly call
+    // performDrag so Bonsplit pane tabs cannot be stolen by AppKit window moves.
     window.isMovableByWindowBackground = false
-    window.isMovable = false
+    let baselineIsMovable = !WorkspacePresentationModeSettings.isMinimal(defaults: defaults)
+    if activeWindowMoveSuppressionSequenceReason(window: window) == nil {
+        window.isMovable = baselineIsMovable
+    } else {
+        updateActiveWindowMoveSuppressionSequencePreviousMovableState(
+            window: window,
+            previousMovableState: baselineIsMovable
+        )
+        ensureWindowMoveSuppressionSequenceIsImmovable(window: window)
+    }
 }
 
 @MainActor

Sources/App/ShortcutRoutingSupport.swift

@@ -789,6 +789,7 @@ enum WindowMoveSuppressionReason: String {
     case bonsplitPaneTabDrag
 }
 
+@MainActor
 func shouldSuppressWindowMoveForBonsplitPaneTabDrag(window: NSWindow, event: NSEvent) -> Bool {
     guard event.type == .leftMouseDown else {
         return false
@@ -797,6 +798,7 @@ func shouldSuppressWindowMoveForBonsplitPaneTabDrag(window: NSWindow, event: NSE
     return BonsplitTabItemHitRegionRegistry.containsWindowPoint(event.locationInWindow, in: window)
 }
 
+@MainActor
 func windowMoveSuppressionReason(window: NSWindow, event: NSEvent) -> WindowMoveSuppressionReason? {
     if shouldSuppressWindowMoveForFolderDrag(window: window, event: event) {
         return .folderDrag
@@ -807,6 +809,7 @@ func windowMoveSuppressionReason(window: NSWindow, event: NSEvent) -> WindowMove
     return nil
 }
 
+@MainActor
 func beginOrContinueWindowMoveSuppressionSequenceForEvent(
     window: NSWindow,
     event: NSEvent,
@@ -829,6 +832,7 @@ func beginOrContinueWindowMoveSuppressionSequenceForEvent(
     return beginWindowMoveSuppressionSequence(window: window, reason: reason)
 }
 
+@MainActor
 func shouldFinishWindowMoveSuppressionSequenceAfterDispatch(window: NSWindow, event: NSEvent) -> Bool {
     activeWindowMoveSuppressionSequenceReason(window: window) != nil && event.type == .leftMouseUp
 }

Sources/ContentView.swift

@@ -3256,9 +3256,11 @@ struct ContentView: View {
             window.isRestorable = false
             setMinimalModeSidebarTitlebarControlsAvailable(sidebarState.isVisible, in: window)
             window.titlebarAppearsTransparent = true
-            // Native AppKit titlebar dragging steals pane-tab drags in minimal
-            // mode. Keep the main window immovable by default; explicit chrome
-            // drag zones temporarily enable performDrag for real app moves.
+            // Keep background dragging disabled so app content gestures and
+            // titlebar controls receive clicks. Standard mode keeps AppKit
+            // movability for macOS tiling/window managers; minimal mode keeps
+            // the native movable bit off so Bonsplit tabs cannot become window
+            // drags. Explicit cmux drag zones call performDrag when needed.
             configureCmuxMainWindowDragBehavior(window)
             window.styleMask.insert(.fullSizeContentView)
 

Sources/DetachedFolderDragIcon.swift

@@ -83,6 +83,7 @@ final class DraggableFolderNSView: NSView, NSDraggingSource {
     }
 
     func draggingSession(_ session: NSDraggingSession, endedAt screenPoint: NSPoint, operation: NSDragOperation) {
+        finishWindowMoveSuppressionSequence(window: window, matching: .folderDrag)
         #if DEBUG
         let nowMovable = window.map { String($0.isMovable) } ?? "nil"
         let windowOrigin = window.map { formatPoint($0.frame.origin) } ?? "nil"
@@ -142,6 +143,7 @@ final class DraggableFolderNSView: NSView, NSDraggingSource {
 
     override func mouseUp(with event: NSEvent) {
         clearPendingDrag()
+        finishWindowMoveSuppressionSequence(window: window, matching: .folderDrag)
         super.mouseUp(with: event)
     }
 

Sources/WindowDecorationsController.swift

@@ -1,5 +1,6 @@
 import AppKit
 
+@MainActor
 final class WindowDecorationsController {
     private var observers: [NSObjectProtocol] = []
     private var didStart = false
@@ -36,7 +37,11 @@ final class WindowDecorationsController {
     }
 
     func apply(to window: NSWindow) {
-        if isMainWorkspaceWindow(window), WorkspacePresentationModeSettings.isMinimal() {
+        let isMainWindow = isMainWorkspaceWindow(window)
+        if isMainWindow {
+            configureCmuxMainWindowDragBehavior(window)
+        }
+        if isMainWindow, WorkspacePresentationModeSettings.isMinimal() {
             WindowMouseMovedEventsCoordinator.enable(for: window, owner: self)
         } else {
             WindowMouseMovedEventsCoordinator.disable(for: window, owner: self)