diff --git a/.gitignore b/.gitignore
index 9440b79..9846ea4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ venv/
 *.key
 *.pem
 credentials.json
+.worktrees/
diff --git a/src/memory/sqlite.rs b/src/memory/sqlite.rs
index a5e973f..f0d0bd1 100644
--- a/src/memory/sqlite.rs
+++ b/src/memory/sqlite.rs
@@ -6,7 +6,7 @@ use async_trait::async_trait;
 use chrono::Local;
 use parking_lot::Mutex;
 use rusqlite::{params, Connection};
-use std::fmt::Write;
+use std::fmt::Write as _;
 use std::path::{Path, PathBuf};
 use std::sync::mpsc;
 use std::sync::Arc;
diff --git a/src/observability/prometheus.rs b/src/observability/prometheus.rs
index ce19568..83f2ece 100644
--- a/src/observability/prometheus.rs
+++ b/src/observability/prometheus.rs
@@ -197,6 +197,10 @@ impl Observer for PrometheusObserver {
             } => {
                 self.errors.with_label_values(&[component]).inc();
             }
+            ObserverEvent::ToolCallStart { .. }
+            | ObserverEvent::TurnComplete
+            | ObserverEvent::LlmRequest { .. }
+            | ObserverEvent::LlmResponse { .. } => {}
         }
     }