fix(gui): replace window.show() with window.raise_window() and add hide() method

bec_widgets/cli/client_utils.py

@@ -561,7 +561,7 @@ class BECGuiClient(RPCBase):
         if self.launcher and len(self._top_level) == 0:
             self.launcher._run_rpc("show")  # pylint: disable=protected-access
         for window in self._top_level.values():
-            window.show()
+            window.raise_window()
 
     def _show_all(self):
         with wait_for_server(self):
@@ -580,7 +580,7 @@ class BECGuiClient(RPCBase):
         if self.launcher and len(self._top_level) == 0:
             self.launcher._run_rpc("raise")  # pylint: disable=protected-access
         for window in self._top_level.values():
-            window._run_rpc("raise")  # type: ignore[attr-defined]
+            window.raise_window()
 
     def _raise_all(self):
         with wait_for_server(self):

bec_widgets/cli/rpc/rpc_base.py

@@ -210,6 +210,10 @@ class RPCBase:
         # Use explicit call to ensure action name is 'raise' (not 'raise_')
         return self._run_rpc("raise")
 
+    def hide(self):
+        """Hide this widget (or its container)."""
+        return self._run_rpc("hide")
+
     def _run_rpc(
         self,
         method,