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/export/src/lib.rs

@@ -107,7 +107,3 @@ fn entry_to_json(e: &DiaryEntry) -> serde_json::Value {
         "spoilers": e.review().spoilers(),
     })
 }
-
-#[cfg(test)]
-#[path = "tests/lib.rs"]
-mod tests;

crates/adapters/export/tests/export_adapter_test.rs

@@ -1,4 +1,3 @@
-use super::ExportAdapter;
 use domain::{
     models::{DiaryEntry, ExportFormat, Movie, ReviewEdit},
     ports::DiaryExporter,
@@ -7,6 +6,7 @@ use domain::{
     },
     value_objects::{Comment, ExternalMetadataId, UserId},
 };
+use export::ExportAdapter;
 
 async fn collect_stream(
     stream: futures::stream::BoxStream<'static, Result<bytes::Bytes, domain::errors::DomainError>>,