chore: rustfmt, clippy lints and code tidying

server/src/state.rs

@@ -33,19 +33,21 @@ pub struct MemoryState {
 impl MemoryState {
     pub fn unique_items<T: Eq + std::hash::Hash + Clone>(input: Vec<T>) -> Vec<T> {
         let mut keys = std::collections::HashSet::new();
-        input.into_iter().filter(|entry| keys.insert(entry.clone())).collect()
+        input
+            .into_iter()
+            .filter(|entry| keys.insert(entry.clone()))
+            .collect()
     }
 
     pub fn broadcast_activity(&self, message: &str) {
         let payload = serde_json::json!({
             "type": "activity",
             "data": message
-        }).to_string();
+        })
+        .to_string();
         let _ = self.activity_tx.send(payload);
     }
 
-
-
     pub fn get_full_graph(&self) -> KnowledgeGraph {
         self.graph.read()
     }
@@ -61,10 +63,10 @@ impl MemoryState {
     pub fn rebuild_index(&self) {
         if let Ok(new_idx) = MemoryIndex::new(&self.base_dir) {
             let graph = self.graph.read();
-            for (_, e) in &graph.entities {
+            for e in graph.entities.values() {
                 let _ = new_idx.index_entity(e);
             }
-            
+
             let tasks = self.tasks.read();
             for t in tasks {
                 let _ = new_idx.index_task(&t);