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/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",