test: move small adapter tests to tests/

event-publisher, export, rss, media-server, object-storage, nats(config).
Kept inline (private fn, no public path): nats src/subject.rs
tests::{review_logged_subject,review_updated_subject,movie_discovered_subject,
consumer_subject_filter_appends_wildcard} - event_to_subject/consumer_subject_filter private.
object-storage build_local_store tests rewritten via StorageConfig::from_config.

crates/adapters/rss/src/lib.rs

@@ -88,7 +88,3 @@ impl RssFeedRenderer for RssAdapter {
         Ok(channel.to_string())
     }
 }
-
-#[cfg(test)]
-#[path = "tests/lib.rs"]
-mod tests;

crates/adapters/rss/tests/rss_adapter_test.rs

@@ -1,7 +1,9 @@
-use super::*;
+use domain::models::DiaryEntry;
 use domain::models::ReviewEdit;
+use domain::ports::{FeedChannel, RssFeedRenderer};
 use domain::testing::{test_movie_with_year, test_review};
 use domain::value_objects::{Comment, UserId};
+use rss::RssAdapter;
 
 fn channel<'a>(title: &'a str) -> FeedChannel<'a> {
     FeedChannel {