fix: reschedule via delete+recreate, sort posts chrono, show account name

- Reschedule: Postiz public API v1 has no PUT/PATCH on posts; implement
  as delete + recreate with updated date and same content/integrations
- Posts list: sort ascending by publishDate so nearest post appears first
- PostCard footer: show integration name (or identifier) before the
  timestamp, truncated to 2 accounts with +N overflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

artifacts/postiz-mobile/app/(tabs)/posts.tsx

@@ -86,10 +86,15 @@ export default function PostsScreen() {
     staleTime: 0,
   });
 
-  const filteredPosts =
+  const filteredPosts = useMemo(() => {
+    const list =
       filter === "all"
         ? posts ?? []
         : (posts ?? []).filter((p) => p.state === filter);
+    return [...list].sort(
+      (a, b) => new Date(a.publishDate).getTime() - new Date(b.publishDate).getTime()
+    );
+  }, [posts, filter]);
 
   const handleRefresh = async () => {
     setRefreshing(true);
@@ -152,8 +157,19 @@ export default function PostsScreen() {
 
   const submitReschedule = async (post: PostizPost, date: Date) => {
     if (!client) return;
+    const integrations = post.integrations ?? (post.integration ? [post.integration] : []);
     try {
-      await client.put(`posts/${post.id}`, { date: date.toISOString() });
+      await client.delete(`posts/${post.id}`);
+      await client.post("posts", {
+        type: "schedule",
+        date: date.toISOString(),
+        shortLink: false,
+        tags: [] as string[],
+        posts: integrations.map((intg) => ({
+          integration: { id: intg.id },
+          value: [{ content: post.content, image: post.image ?? [] }],
+        })),
+      });
       queryClient.invalidateQueries({ queryKey: ["posts-list"] });
       Haptics.notificationAsync(Haptics.NotificationFeedbackType.Success);
       Alert.alert("Rescheduled", `Post moved to ${date.toLocaleDateString("en-US", { month: "short", day: "numeric", hour: "2-digit", minute: "2-digit" })}`);

artifacts/postiz-mobile/components/PostCard.tsx

@@ -139,6 +139,19 @@ export function PostCard({ post, onDelete, onLongPress }: PostCardProps) {
           {truncatedContent}
         </Text>
         <View style={styles.footer}>
+          {integrations.length > 0 && (
+            <>
+              <Text style={[styles.accountName, { color: colors.mutedForeground }]} numberOfLines={1}>
+                {integrations
+                  .slice(0, 2)
+                  .map((i) => i.name || i.identifier || "")
+                  .filter(Boolean)
+                  .join(", ")}
+                {integrations.length > 2 ? ` +${integrations.length - 2}` : ""}
+              </Text>
+              <Text style={[styles.dot, { color: colors.mutedForeground }]}>·</Text>
+            </>
+          )}
           <Feather name="clock" size={12} color={colors.mutedForeground} />
           <Text style={[styles.date, { color: colors.mutedForeground }]}>
             {formatDate(post.publishDate)}
@@ -191,6 +204,15 @@ const styles = StyleSheet.create({
     fontSize: 12,
     fontFamily: "Inter_400Regular",
   },
+  accountName: {
+    fontSize: 12,
+    fontFamily: "Inter_400Regular",
+    flexShrink: 1,
+  },
+  dot: {
+    fontSize: 12,
+    marginHorizontal: 3,
+  },
   deleteAction: {
     width: 72,
     alignItems: "center",