perf(server): eliminate implicit full-collection clones by removing Store::read() in favor of read_with()

server/src/state.rs

@@ -46,7 +46,7 @@ impl MemoryState {
     }
 
     pub fn get_full_graph(&self) -> KnowledgeGraph {
-        self.graph.read()
+        self.graph.read_with(|g| g.clone())
     }
 
     pub fn read_graph<F, R>(&self, f: F) -> R
@@ -62,12 +62,12 @@ impl MemoryState {
 
     pub async fn rebuild_index(&self) {
         if let Ok(new_idx) = MemoryIndex::new(&self.base_dir) {
-            let entities = self.graph.read().entities.into_values().collect();
-            let tasks = self.tasks.read();
-            let snippets = self.snippets.read();
-            let adrs = self.adrs.read();
+            let entities: Vec<Entity> = self.graph.read_with(|g| g.entities.values().cloned().collect());
+            let tasks = self.tasks.read_with(|t| t.clone());
+            let snippets = self.snippets.read_with(|s| s.clone());
+            let adrs = self.adrs.read_with(|a| a.clone());
 
-            let handle = new_idx.index_batch(entities, tasks, snippets, adrs);
+            let handle = new_idx.index_batch(&entities, &tasks, &snippets, &adrs);
             let _ = handle.await;
 
             let _ = new_idx.commit().await;