fix(user-input): record observed selection before reconcile early-return

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/home/components/user-input/user-input.tsx

@@ -1053,6 +1053,13 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
   const handleSelectAdjust = useCallback(() => {
     const textarea = textareaRef.current
     if (!textarea) return
+    const start = textarea.selectionStart ?? 0
+    const end = textarea.selectionEnd ?? 0
+    const prev = lastSelectionRef.current
+    // Always track the raw observed selection — never an intended write that
+    // may get superseded — so edge-movement inference stays true to the DOM.
+    lastSelectionRef.current = { start, end }
+
     // Controlled-value reconciliation: state and DOM can only drift when an
     // edit's change event is lost (programmatic edits pair setValue
     // synchronously). The DOM is the user's intent — adopt it and let the
@@ -1062,12 +1069,6 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
       setValue(textarea.value)
       return
     }
-    const start = textarea.selectionStart ?? 0
-    const end = textarea.selectionEnd ?? 0
-    const prev = lastSelectionRef.current
-    // Always track the raw observed selection — never an intended write that
-    // may get superseded — so edge-movement inference stays true to the DOM.
-    lastSelectionRef.current = { start, end }
 
     let newStart = start
     let newEnd = end