diff --git a/crates/vida-core/src/agent_loop.rs b/crates/vida-core/src/agent_loop.rs
index 912b0a6..0b0c545 100644
--- a/crates/vida-core/src/agent_loop.rs
+++ b/crates/vida-core/src/agent_loop.rs
@@ -12,6 +12,7 @@ use crate::mcp::{McpManager, McpTool, McpToolResult, McpToolResultContent};
 use crate::tool_validator::validate_tool_call;
 
 const MAX_TOOL_ITERATIONS: usize = 8;
+#[allow(dead_code)]
 const TOOL_CALL_TIMEOUT_SECS: u64 = 30;
 const TOOL_CALL_START: &str = "<tool_call>";
 const TOOL_CALL_END: &str = "</tool_call>";
diff --git a/crates/vida-core/src/engine.rs b/crates/vida-core/src/engine.rs
index 75e4b69..cfe960c 100644
--- a/crates/vida-core/src/engine.rs
+++ b/crates/vida-core/src/engine.rs
@@ -1,7 +1,6 @@
 use std::path::{Path, PathBuf};
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Arc;
-use std::time::Instant;
 use tokio::sync::mpsc;
 use uuid::Uuid;
 
@@ -643,13 +642,13 @@ impl VidaEngine {
                     "Too many login attempts. Try again later.".to_string(),
                 ));
             } else {
-                self.login_blocked_until.remove(&username.to_string());
+                self.login_blocked_until.remove(username);
             }
         }
 
         match self.authenticate_user(username, password).await {
             Ok(session) => {
-                self.login_attempts.remove(&username.to_string());
+                self.login_attempts.remove(username);
                 self.current_actor = Some(session.clone());
                 Ok(session)
             }
@@ -665,7 +664,7 @@ impl VidaEngine {
                             username.to_string(),
                             now + std::time::Duration::from_secs(LOGIN_BLOCK_SECS),
                         );
-                        self.login_attempts.remove(&username.to_string());
+                        self.login_attempts.remove(username);
                     }
                 }
                 Err(err)
@@ -1249,8 +1248,7 @@ impl VidaEngine {
         name: &str,
     ) -> Result<WorkspaceConfig, VidaError> {
         let workspace_path = std::path::Path::new(path);
-        let mut config = WorkspaceConfig::default();
-        config.name = name.to_string();
+        let config = WorkspaceConfig { name: name.to_string(), ..Default::default() };
 
         save_workspace_config(workspace_path, &config)?;
 
diff --git a/crates/vida-core/src/permissions.rs b/crates/vida-core/src/permissions.rs
index 3f25a6d..1f19564 100644
--- a/crates/vida-core/src/permissions.rs
+++ b/crates/vida-core/src/permissions.rs
@@ -1,19 +1,14 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Default)]
 #[serde(rename_all = "lowercase")]
 pub enum PermissionMode {
     Yolo,
+    #[default]
     Ask,
     Sandbox,
 }
 
-impl Default for PermissionMode {
-    fn default() -> Self {
-        Self::Ask
-    }
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
 #[serde(rename_all = "snake_case")]
 pub enum PermissionType {
diff --git a/crates/vida-core/src/remote.rs b/crates/vida-core/src/remote.rs
index 941b29f..aa172a6 100644
--- a/crates/vida-core/src/remote.rs
+++ b/crates/vida-core/src/remote.rs
@@ -971,8 +971,7 @@ mod server {
                     let _ = socket
                         .send(ws::Message::Text(
                             serde_json::json!({"error": e.to_string()})
-                                .to_string()
-                                .into(),
+                                .to_string(),
                         ))
                         .await;
                     return;
@@ -1007,7 +1006,7 @@ mod server {
                 };
                 let is_done = matches!(event, StreamEvent::Done);
                 if socket
-                    .send(ws::Message::Text(json.to_string().into()))
+                    .send(ws::Message::Text(json.to_string()))
                     .await
                     .is_err()
                 {
diff --git a/crates/vida-core/src/tool_validator.rs b/crates/vida-core/src/tool_validator.rs
index a00dcd7..378d629 100644
--- a/crates/vida-core/src/tool_validator.rs
+++ b/crates/vida-core/src/tool_validator.rs
@@ -35,7 +35,7 @@ fn validate_against_schema(value: &Value, schema: &Value) -> Result<(), String>
             "array" => validate_array(value, schema)?,
             "string" if !value.is_string() => return Err("expected string".to_string()),
             "number" if !value.is_number() => return Err("expected number".to_string()),
-            "integer" if !value.as_i64().is_some() && !value.as_u64().is_some() => {
+            "integer" if value.as_i64().is_none() && value.as_u64().is_none() => {
                 return Err("expected integer".to_string())
             }
             "boolean" if !value.is_boolean() => return Err("expected boolean".to_string()),