[fix] resolve cross-platform build warnings

apps/desktop/src/gui/ui/file_browser.slint

@@ -601,6 +601,9 @@ export component FileBrowserWindow inherits Window {
     SurfaceSeparator { x: 0px; y: 0px; width: parent.width; }
     focus := FocusScope {
         focus-on-click: true;
+        // Window sizing is defined above. Keep its layout constraints separate
+        // from children whose dimensions adapt to the current window size.
+        x: 0px; y: 0px; width: root.width; height: root.height;
         key-pressed(event) => {
             if event.text == Key.Escape { root.cancel-drag(); return accept; }
             reject

apps/desktop/src/gui/ui/trusted_devices.slint

@@ -141,7 +141,6 @@ export component TrustedDevicesDialog inherits Rectangle {
             // Extend into the right margin to preserve the existing card width.
             width: parent.width - 56px + dialog.scrollbar-gutter;
             height: parent.height - 84px;
-            min-width: 0px; min-height: 0px;
             horizontal-scrollbar-policy: always-off;
             vertical-scrollbar-policy: as-needed;
             viewport-width: self.visible-width;

apps/desktop/src/platform/common/updater_posix.cpp

@@ -102,7 +102,11 @@ void Launch(const fs::path& executable, const std::vector<std::string>& argument
     }
     execv(executable.c_str(), argv.data());
     const int error = errno;
-    (void)write(errors[1], &error, sizeof(error));
+    // This small blocking pipe write is atomic. Retry signal interruptions so
+    // the parent cannot mistake a failed exec for a successful launch.
+    ssize_t written;
+    do { written = write(errors[1], &error, sizeof(error)); }
+    while (written < 0 && errno == EINTR);
     _exit(127);
   }
   close(errors[1]);

apps/desktop/src/platform/macos/input/keyboard/keyboard_capturer.h

@@ -17,16 +17,16 @@ namespace crossdesk {
 class PlatformKeyboardCapturer final : public KeyboardCapturer {
  public:
   PlatformKeyboardCapturer();
-  virtual ~PlatformKeyboardCapturer();
+  ~PlatformKeyboardCapturer() override;
 
  public:
-  virtual int Hook(OnKeyAction on_key_action, void* user_ptr);
-  virtual int Unhook();
+  int Hook(OnKeyAction on_key_action, void* user_ptr) override;
+  int Unhook() override;
   bool SupportsTextInput() const override { return true; }
   int SendTextCommand(const std::string& text) override;
-  virtual int SendKeyboardCommand(int key_code, bool is_down,
-                                  uint32_t scan_code = 0,
-                                  bool extended = false);
+  int SendKeyboardCommand(int key_code, bool is_down,
+                          uint32_t scan_code = 0,
+                          bool extended = false) override;
 
  private:
   CFMachPortRef event_tap_ = nullptr;

apps/desktop/src/platform/macos/input/mouse/mouse_controller.h

@@ -1,7 +1,7 @@
 /*
  * @Author: DI JUNKUN
  * @Date: 2023-12-14
- * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
  */
 
 #ifndef _MOUSE_CONTROLLER_H_
@@ -20,15 +20,15 @@ namespace crossdesk {
 class PlatformMouseController final : public MouseController {
  public:
   PlatformMouseController();
-  virtual ~PlatformMouseController();
+  ~PlatformMouseController() override;
 
  public:
-  virtual int Init(std::vector<DisplayInfo> display_info_list);
-  virtual int Destroy();
-  virtual int SendMouseCommand(RemoteAction remote_action, int display_index);
+  int Init(std::vector<DisplayInfo> display_info_list) override;
+  int Destroy() override;
+  int SendMouseCommand(RemoteAction remote_action, int display_index) override;
   unsigned ReleasePressedButtons(unsigned mask = 7) override;
   void UpdateDisplayInfoList(
-      const std::vector<DisplayInfo>& display_info_list);
+      const std::vector<DisplayInfo>& display_info_list) override;
 
  private:
   struct ClickTracker {