refactor(web): unify settings panel layouts with shared toolbar/body

- Add PanelToolbar/PanelBody primitives so all four settings tabs share
  the same top-toolbar + scrollable-body rhythm under the unified header.
- API panel: drop the heavy gray shadowed TabsList; move the create
  action into the toolbar next to the tabs, lighten per-tab hints.
- Storage panel: reuse PanelToolbar for the generated-at/refresh bar.
- Account panel: wrap content in PanelBody for consistent padding.
- Models panel: keep the pinned LangBot Models (Space) card at the very
  top, above the add-custom-provider row (intentional pin), using
  PanelBody instead of a top toolbar.

web/src/app/home/components/dynamic-form/DynamicFormItemConfig.ts

@@ -47,7 +47,6 @@ export function parseDynamicFormItemType(value: string): DynamicFormItemType {
 
 export function getDefaultValues(
   itemConfigList: IDynamicFormItemSchema[],
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
 ): Record<string, any> {
   return itemConfigList.reduce(
     (acc, item) => {
@@ -59,7 +58,7 @@ export function getDefaultValues(
       acc[item.name] = item.default;
       return acc;
     },
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+
     {} as Record<string, any>,
   );
 }