feat(quote-carousel): add QuoteCarouselBlock component and related types

- Introduced a new QuoteCarouselBlock component for displaying rotating quotes.
- Added QuoteCarouselBlockData interface to define the structure of the quote carousel data.
- Updated existing components and types to integrate the new quote carousel functionality.
- Enhanced blog-utils to support filtering posts by tags more effectively.
- Made various UI improvements in the Footer and PostCard components for better user experience.

src/lib/blog-utils.ts

@@ -378,7 +378,19 @@ export async function resolvePostOverviewBlocks(
     if (!Array.isArray(content)) continue;
     for (const item of content) {
       if (!isPostOverviewBlock(item)) continue;
-      if (item.allPosts) {
+      const rawFilter = item.filterByTag ?? [];
+      const tagSlugs = Array.isArray(rawFilter)
+        ? rawFilter
+            .map((t) =>
+              typeof t === "string"
+                ? t
+                : ((t as { _slug?: string })?._slug ?? ""),
+            )
+            .filter(Boolean)
+        : [];
+      const hasExplicitPosts = Array.isArray(item.posts) && item.posts.length > 0;
+      const useAllPosts = item.allPosts || (tagSlugs.length > 0 && !hasExplicitPosts);
+      if (useAllPosts) {
         if (allPosts === null)
           allPosts = await getPosts({
             _sort: "created",
@@ -386,21 +398,11 @@ export async function resolvePostOverviewBlocks(
             resolve: "all",
           });
         let list = filterHiddenPosts(sortPostsByDate(allPosts));
-        const rawFilter = item.filterByTag ?? [];
-        const tagSlugs = Array.isArray(rawFilter)
-          ? rawFilter
-              .map((t) =>
-                typeof t === "string"
-                  ? t
-                  : ((t as { _slug?: string })?._slug ?? ""),
-              )
-              .filter(Boolean)
-          : [];
         if (tagSlugs.length) list = filterPostsByTagSlugs(list, tagSlugs);
         const limit =
           typeof item.numberItems === "number" ? item.numberItems : 9999;
         item.postsResolved = list.slice(0, limit);
-      } else if (Array.isArray(item.posts) && item.posts.length > 0) {
+      } else if (hasExplicitPosts && Array.isArray(item.posts)) {
         const first = item.posts[0];
         const isResolved =
           typeof first === "object" &&