feat(boards list): add filter by tag

src/hooks/use-default-subplebbits-tags.ts

@@ -0,0 +1,17 @@
+import { useMemo } from 'react';
+
+// Add this helper function to collect unique tags from subplebbits
+const getUniqueTags = (multisub: any) => {
+  const allTags = new Set<string>();
+  Object.values(multisub).forEach((sub: any) => {
+    if (sub?.tags?.length) {
+      sub.tags.forEach((tag: string) => allTags.add(tag));
+    }
+  });
+  return Array.from(allTags).sort();
+};
+
+// Export tags as a derived value where it's needed
+export const useDefaultSubplebbitTags = (subplebbits: any) => {
+  return useMemo(() => getUniqueTags(subplebbits), [subplebbits]);
+};