ui: tighten dashboard copy and fix layout issues

app/[locale]/archive/page.tsx

@@ -16,8 +16,19 @@ export default async function ArchivePage() {
   const initialData: PostListResponse | null = await getInitialPostPage(30, 1, {
     filters: { archiveOnly: true },
     legacyFallback: async () => {
-      const legacyItems = await getPosts(500, 1).catch(() => null)
-      return legacyItems ? buildArchiveFallbackResponse(legacyItems, 1, 30) : null
+      // Old backend (no /posts-paged archive_only): /posts caps at 500 per
+      // page, so a single page only sees the latest 500 posts globally — older
+      // archive rows get buried under fresh truth posts and silently dropped.
+      // Page through a few windows so archive coverage isn't truncated.
+      const MAX_PAGES = 4   // up to 2000 most-recent posts scanned for archive rows
+      const collected: Awaited<ReturnType<typeof getPosts>> = []
+      for (let p = 1; p <= MAX_PAGES; p++) {
+        const batch = await getPosts(500, p).catch(() => null)
+        if (!batch || batch.length === 0) break
+        collected.push(...batch)
+        if (batch.length < 500) break   // last page reached
+      }
+      return collected.length ? buildArchiveFallbackResponse(collected, 1, 30) : null
     },
   })