fix: real AP id tests, exact poster key check, exists port, list_movies fake

crates/adapters/image-converter/src/handler.rs

@@ -48,13 +48,9 @@ impl EventHandler for ImageConversionHandler {
         // `get` falls back to `{key}.webp` / `{key}.avif`, which would re-encode
         // an already converted image on redelivery. Probe the exact key first:
         // once the original is gone, an earlier delivery finished the conversion.
-        match self.storage.get_stream(&key).await {
-            Ok(_) => {}
-            Err(DomainError::NotFound(_)) => {
-                tracing::debug!("original {key} already converted, skipping");
-                return Ok(());
-            }
-            Err(e) => return Err(e),
+        if !self.storage.exists(&key).await? {
+            tracing::warn!(%key, "original image already gone, treating conversion as done");
+            return Ok(());
         }
         let bytes = self.storage.get(&key).await?;
         let format = self.format;