Fix: Preserve text selection on tab switch for input/output

src/web/waiters/InputWaiter.mjs

@@ -758,6 +758,15 @@
      * @param {string | ArrayBuffer} value
      */
     updateInputValue(inputNum, value, force=false) {
+        // Preserve current selection
+        const inputElement = document.getElementById("input-text");
+        let selectionStart = null;
+        let selectionEnd = null;
+        if (inputElement) {
+            selectionStart = inputElement.selectionStart;
+            selectionEnd = inputElement.selectionEnd;
+        }
+
         // Prepare the value as a buffer (full value) and a string sample (up to 4096 bytes)
         let buffer;
         let stringSample = "";
@@ -796,6 +805,14 @@
                 eolSequence: this.getEOLSeq()
             }
         }, transferable);
+
+        // Restore selection if it was set
+        if (inputElement && selectionStart !== null && selectionEnd !== null) {
+            requestAnimationFrame(() => {
+                inputElement.selectionStart = selectionStart;
+                inputElement.selectionEnd = selectionEnd;
+            });
+        }
     }
 
     /**

src/web/waiters/OutputWaiter.mjs

@@ -551,17 +551,27 @@
         if (!this.outputExists(inputNum)) {
             this.addOutput(inputNum);
         }
-
-        if (Object.prototype.hasOwnProperty.call(data, "dish")) {
-            data.dish = new Dish(data.dish);
+        // Preserve current selection
+        const outputElement = document.getElementById("output-text");
+        let selectionStart = null;
+        let selectionEnd = null;
+        if (outputElement) {
+            selectionStart = outputElement.selectionStart;
+            selectionEnd = outputElement.selectionEnd;
         }
 
-        this.outputs[inputNum].data = data;
-
-        const tabItem = this.manager.tabs.getTabItem(inputNum, "output");
-        if (tabItem) tabItem.style.background = "";
-
-        if (set) this.set(inputNum);
+        this.outputs[inputNum].statusMessage = statusMessage;
+        if (set) {
+            this.set(inputNum);
+
+            // Restore selection if it was set
+            if (outputElement && selectionStart !== null && selectionEnd !== null) {
+                requestAnimationFrame(() => {
+                    outputElement.selectionStart = selectionStart;
+                    outputElement.selectionEnd = selectionEnd;
+                });
+            }
+        }
     }
 
     /**