fix(tui): Center the initially selected session in the session_list (resolves #8558) (#8560)

packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx

@@ -109,15 +109,16 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
 
   createEffect(
     on([() => store.filter, () => props.current], ([filter, current]) => {
+      setTimeout(() => {
         if (filter.length > 0) {
-        setStore("selected", 0)
+          moveTo(0, true)
         } else if (current) {
           const currentIndex = flat().findIndex((opt) => isDeepEqual(opt.value, current))
           if (currentIndex >= 0) {
-          setStore("selected", currentIndex)
+            moveTo(currentIndex, true)
           }
         }
-      scroll?.scrollTo(0)
+      }, 0)
     }),
   )
 
@@ -129,7 +130,7 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
     moveTo(next)
   }
 
-  function moveTo(next: number) {
+  function moveTo(next: number, center = false) {
     setStore("selected", next)
     props.onMove?.(selected()!)
     if (!scroll) return
@@ -138,6 +139,10 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
     })
     if (!target) return
     const y = target.y - scroll.y
+    if (center) {
+      const centerOffset = Math.floor(scroll.height / 2)
+      scroll.scrollBy(y - centerOffset)
+    } else {
       if (y >= scroll.height) {
         scroll.scrollBy(y - scroll.height + 1)
       }
@@ -148,6 +153,7 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
         }
       }
     }
+  }
 
   const keybind = useKeybind()
   useKeyboard((evt) => {