fix: reshared posts should be shown in feed

components/social/post-card.tsx

@@ -22,7 +22,7 @@
 
 import Image from "next/image";
 import Link from "next/link";
-import { ExternalLink } from "lucide-react";
+import { ExternalLink, Repeat2 } from "lucide-react";
 import type { Post } from "@/lib/social";
 import { displaySourceLabel } from "@/lib/source-reference";
 import { appendHighlight, hasHighlight } from "@/lib/text-highlight";
@@ -46,6 +46,16 @@ export function PostCard({
 
   return (
     <article className="rounded-xl bg-card ring-1 ring-foreground/10 p-5">
+      {/* Reshare attribution — only on rows the feed owner reshared.
+          The author block below still shows the original author; this
+          strip just signals "this is on this feed because it was
+          reshared," matching the Twitter/X retweet convention. */}
+      {post.reshared_at ? (
+        <div className="flex items-center gap-1.5 text-xs text-muted-foreground mb-3">
+          <Repeat2 className="size-3.5" />
+          <span>Reshared</span>
+        </div>
+      ) : null}
       {/* Author header — identity on the left, overflow menu on the
           right. The menu trigger only renders when there are items to
           show (delete for owners, block/report for everyone else), so