fix: unignore 2 PostgreSQL model registry tests — docker running

test_model_registry_new and test_register_and_retrieve_model no longer
ignored. foxhunt-postgres docker container available locally.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

crates/ml/src/model_registry.rs

@@ -1006,7 +1006,6 @@ mod tests {
     use super::*;
 
     #[tokio::test]
-    #[ignore = "Requires PostgreSQL"]
     async fn test_model_registry_new() {
         let registry = ModelRegistry::new(
             "postgresql://foxhunt:foxhunt_dev_password@localhost:5432/foxhunt",
@@ -1018,7 +1017,6 @@ mod tests {
     }
 
     #[tokio::test]
-    #[ignore = "Requires PostgreSQL"]
     async fn test_register_and_retrieve_model() {
         let registry = ModelRegistry::new(
             "postgresql://foxhunt:foxhunt_dev_password@localhost:5432/foxhunt",