feat(boards): add responsive layout system (#2271)

apps/nextjs/src/components/board/items/actions/section-elements.ts

@@ -0,0 +1,18 @@
+import type { Board } from "~/app/[locale]/boards/_types";
+
+export const getSectionElements = (board: Board, { sectionId, layoutId }: { sectionId: string; layoutId: string }) => {
+  const dynamicSectionsOfFirstSection = board.sections
+    .filter((section) => section.kind === "dynamic")
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    .map(({ layouts, ...section }) => ({ ...section, ...layouts.find((layout) => layout.layoutId === layoutId)! }))
+    .filter((section) => section.parentSectionId === sectionId);
+  const items = board.items
+    .map(({ layouts, ...item }) => ({
+      ...item,
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      ...layouts.find((layout) => layout.layoutId === layoutId)!,
+    }))
+    .filter((item) => item.sectionId === sectionId);
+
+  return [...items, ...dynamicSectionsOfFirstSection];
+};