feat(fifa17): route SBCs through atomic Rust Core

openfut-utas-host/src/pile_store.rs

@@ -159,6 +159,16 @@ impl PileStore {
             .map(|r| r.get::<String, _>("core_item_id"))
             .collect())
     }
+    /// Remove stale presentation metadata after Core has consumed an item.
+    /// Projection paths still intersect Core ownership, so failure is safe.
+    pub async fn remove(&self, core_item_id: &str) -> Result<(), PileError> {
+        sqlx::query("DELETE FROM item_pile WHERE core_item_id = ?")
+            .bind(core_item_id)
+            .execute(&self.pool)
+            .await
+            .map_err(db)?;
+        Ok(())
+    }
 }
 
 #[cfg(test)]