osk: mirror squeekboard's real Visible back into oskOpen

squeekboard auto-shows/hides itself on input-method focus without
telling the shell; the stale flag left the dock suppressed and the rail
floating at keyboard height. gdbus monitor on its Visible property is
the single truth now.

surfaces/quickshell/modules/ii/onScreenKeyboard/OnScreenKeyboard.qml

@@ -79,6 +79,30 @@ Scope {
         }
     }
 
+    // squeekboard auto-shows/hides ITSELF on input-method focus (e.g. a
+    // sidebar taking or dropping a text field) without telling us. oskOpen
+    // then lies: the dock stays suppressed and the gesture rail floats at
+    // keyboard height over nothing until someone manually toggles. Mirror
+    // squeekboard's real Visible property back into oskOpen so there is
+    // exactly one truth. Setting oskOpen from here re-triggers SetVisible
+    // with the value squeekboard already has, which is a harmless no-op.
+    Process {
+        id: oskVisMonitor
+        running: true
+        command: ["gdbus", "monitor", "--session",
+                  "--dest", "sm.puri.OSK0", "--object-path", "/sm/puri/OSK0"]
+        stdout: SplitParser {
+            onRead: line => {
+                if (!line.includes("'Visible'")) return;
+                const vis = line.includes("<true>");
+                if (GlobalStates.oskOpen !== vis) {
+                    console.log("[osk] squeekboard self-" + (vis ? "showed" : "hid") + ", syncing oskOpen");
+                    GlobalStates.oskOpen = vis;
+                }
+            }
+        }
+    }
+
     IpcHandler {
         target: "osk"