Filter exact music identities before lexical and semantic candidate limits

crates/searchi-service/src/media.rs

@@ -190,15 +190,9 @@ impl HybridSearch {
         metadata: &MediaProbe,
         change_revision: i64,
     ) -> Result<()> {
-        let tags = metadata
-            .tags
-            .iter()
-            .map(|(k, v)| format!("{k}: {v}"))
-            .collect::<Vec<_>>()
-            .join("\n");
-        self.lexical.set_media_metadata_at_revision(
+        self.lexical.set_structured_media_metadata_at_revision(
             &path.to_string_lossy(),
-            &tags,
+            &metadata.tags,
             metadata.duration_ms,
             identity.bytes,
             identity.modified_ns,