batch corrections

- PostCard: fix post.status → post.state (all posts showed Draft)
- compose: remove expo-file-system File import (not installed, Expo 54 incompatible)
- compose: fix native FormData upload pattern for React Native
- compose: add missing Bearer prefix on upload Authorization header
- posts: memoize date range and include in query key to avoid stale closures

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

artifacts/postiz-mobile/components/PostCard.tsx

@@ -129,7 +129,7 @@ export function PostCard({ post, onDelete }: PostCardProps) {
               </Text>
             )}
           </View>
-          <StatusBadge status={post.status} />
+          <StatusBadge status={post.state} />
         </View>
         <Text style={[styles.content, { color: colors.foreground }]}>
           {truncatedContent}