fix: profile shows only own reviews, federation display name in community

- diary API accepts user_id filter, profile page passes it
- movie social feed joins ap_remote_actors for handle resolution
- COALESCE prefers actor handle for remote reviews, email for local

spa/src/lib/api/diary.ts

@@ -8,6 +8,7 @@ export const diaryQueryParamsSchema = z.object({
   offset: z.number().optional(),
   sort_by: z.string().optional(),
   movie_id: z.string().uuid().optional(),
+  user_id: z.string().uuid().optional(),
 })
 export type DiaryQueryParams = z.infer<typeof diaryQueryParamsSchema>