make variant modal less annoying (#19998)

packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx

@@ -136,7 +136,13 @@ export function DialogModel(props: { providerID?: string }) {
 
   function onSelect(providerID: string, modelID: string) {
     local.model.set({ providerID, modelID }, { recent: true })
-    if (local.model.variant.list().length > 0) {
+    const list = local.model.variant.list()
+    const cur = local.model.variant.selected()
+    if (cur === "default" || (cur && list.includes(cur))) {
+      dialog.clear()
+      return
+    }
+    if (list.length > 0) {
       dialog.replace(() => <DialogVariant />)
       return
     }

packages/opencode/src/cli/cmd/tui/component/dialog-variant.tsx

@@ -8,21 +8,31 @@ export function DialogVariant() {
   const dialog = useDialog()
 
   const options = createMemo(() => {
-    return local.model.variant.list().map((variant) => ({
-      value: variant,
-      title: variant,
-      onSelect: () => {
-        dialog.clear()
-        local.model.variant.set(variant)
+    return [
+      {
+        value: "default",
+        title: "Default",
+        onSelect: () => {
+          dialog.clear()
+          local.model.variant.set(undefined)
+        },
       },
-    }))
+      ...local.model.variant.list().map((variant) => ({
+        value: variant,
+        title: variant,
+        onSelect: () => {
+          dialog.clear()
+          local.model.variant.set(variant)
+        },
+      })),
+    ]
   })
 
   return (
     <DialogSelect<string>
       options={options()}
       title={"Select variant"}
-      current={local.model.variant.current()}
+      current={local.model.variant.selected()}
       flat={true}
     />
   )