Fix fx-gui z-order: anchored window HWND_TOPMOST so real clicks reach plugin over webview; /hide demotes

native_bridge/src/FxGuiServer.cpp

@@ -283,7 +283,7 @@ void danceStart(HWND hwnd, HWND target, int x, int y) {
                          SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
                          SWP_NOACTIVATE | SWP_FRAMECHANGED);
         }
-        SetWindowPos(hwnd, HWND_TOP, g_embedRect.left, g_embedRect.top,
+        SetWindowPos(hwnd, HWND_TOPMOST, g_embedRect.left, g_embedRect.top,
                      cw, ch, SWP_NOACTIVATE | SWP_SHOWWINDOW);
         fxGuiRequestResize(hwnd, cw, ch);
         Sleep(60);  // let the compositor repaint so the editor sees itself active
@@ -520,6 +520,10 @@ void runHttpServer(HWND hwnd, std::atomic<bool>& stop) {
                 sendResponse(c, 400, "application/json", "{\"error\":\"bad json\"}", 20);
             }
         } else if (req.path == "/hide") {
+            // Demote first: without it the next SW_SHOW would keep the
+            // window topmost and it would float over other apps.
+            SetWindowPos(hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
+                         SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
             ShowWindow(hwnd, SW_HIDE);
             sendResponse(c, 200, "application/json", "{\"ok\":true}", 11);
         } else if (req.path == "/show") {
@@ -558,7 +562,7 @@ void runHttpServer(HWND hwnd, std::atomic<bool>& stop) {
                 // skip both when nothing moved so the plugin view is not
                 // re-laid-out in a loop. Re-show after /hide regardless.
                 if (!same || !IsWindowVisible(hwnd))
-                    SetWindowPos(hwnd, HWND_TOP, g_embedRect.left, g_embedRect.top,
+                    SetWindowPos(hwnd, HWND_TOPMOST, g_embedRect.left, g_embedRect.top,
                                  cw, ch, SWP_NOACTIVATE | SWP_SHOWWINDOW);
                 if (cur.right - cur.left != cw || cur.bottom - cur.top != ch)
                     fxGuiRequestResize(hwnd, cw, ch);