diff --git a/crates/owlen-core/src/session.rs b/crates/owlen-core/src/session.rs
index 2afd94e..f86f1fa 100644
--- a/crates/owlen-core/src/session.rs
+++ b/crates/owlen-core/src/session.rs
@@ -912,30 +912,24 @@ impl SessionController {
             let guard = self.config.lock().await;
             guard
                 .providers
-                .iter()
-                .map(|(name, _)| (name.clone(), Self::quota_from_config(&guard, name)))
+                .keys()
+                .map(|name| (name.clone(), Self::quota_from_config(&guard, name)))
                 .collect::<HashMap<_, _>>()
         };
 
         let now = SystemTime::now();
         let mut provider_names: HashSet<String> = quota_map.keys().cloned().collect();
 
-        let snapshots = {
-            let ledger = self.usage_ledger.lock().await;
-            for key in ledger.provider_keys() {
-                provider_names.insert(key.clone());
-            }
+        let ledger = self.usage_ledger.lock().await;
+        provider_names.extend(ledger.provider_keys().cloned());
 
-            provider_names
-                .into_iter()
-                .map(|provider| {
-                    let quota = quota_map.get(&provider).cloned().unwrap_or_default();
-                    ledger.snapshot(&provider, quota, now)
-                })
-                .collect::<Vec<_>>()
-        };
-
-        snapshots
+        provider_names
+            .into_iter()
+            .map(|provider| {
+                let quota = quota_map.get(&provider).cloned().unwrap_or_default();
+                ledger.snapshot(&provider, quota, now)
+            })
+            .collect()
     }
 
     // Asynchronous access to the configuration (used internally).
diff --git a/crates/owlen-core/src/usage.rs b/crates/owlen-core/src/usage.rs
index 3048324..d936934 100644
--- a/crates/owlen-core/src/usage.rs
+++ b/crates/owlen-core/src/usage.rs
@@ -167,10 +167,7 @@ impl UsageLedger {
             Err(_) => 0,
         };
 
-        let entry = self
-            .providers
-            .entry(provider.to_string())
-            .or_insert_with(VecDeque::new);
+        let entry = self.providers.entry(provider.to_string()).or_default();
 
         entry.push_back(UsageRecord {
             timestamp: ts,
diff --git a/crates/owlen-markdown/src/lib.rs b/crates/owlen-markdown/src/lib.rs
index 9bef678..e1df1cb 100644
--- a/crates/owlen-markdown/src/lib.rs
+++ b/crates/owlen-markdown/src/lib.rs
@@ -251,7 +251,7 @@ mod tests {
         assert!(
             line.spans
                 .iter()
-                .any(|span| span.style.contains(Modifier::BOLD))
+                .any(|span| span.style.add_modifier.contains(Modifier::BOLD))
         );
     }
 
@@ -265,6 +265,6 @@ mod tests {
             .find(|span| span.content.as_ref() == "code")
             .cloned()
             .unwrap();
-        assert!(styled.style.contains(Modifier::BOLD));
+        assert!(styled.style.add_modifier.contains(Modifier::BOLD));
     }
 }
diff --git a/crates/owlen-tui/src/chat_app.rs b/crates/owlen-tui/src/chat_app.rs
index 873bf95..f18f678 100644
--- a/crates/owlen-tui/src/chat_app.rs
+++ b/crates/owlen-tui/src/chat_app.rs
@@ -7471,7 +7471,7 @@ impl ChatApp {
                                 }
                                 "web" => {
                                     let action =
-                                        args.get(0).map(|value| value.to_ascii_lowercase());
+                                        args.first().map(|value| value.to_ascii_lowercase());
                                     match action.as_deref() {
                                         Some("on") | Some("enable") => {
                                             match self.set_web_tool_enabled(true).await {
@@ -8627,9 +8627,7 @@ impl ChatApp {
     }
 
     fn format_percent_value(percent: f64) -> String {
-        if percent >= 100.0 || percent == 0.0 {
-            format!("{percent:.0}")
-        } else if percent >= 10.0 {
+        if percent >= 10.0 || percent == 0.0 {
             format!("{percent:.0}")
         } else {
             format!("{percent:.1}")
@@ -12690,6 +12688,7 @@ fn normalize_cloud_endpoint(endpoint: &str) -> String {
 }
 
 #[cfg(test)]
+#[allow(clippy::items_after_test_module)]
 mod tests {
     use super::{ChatApp, ModelAvailabilityState, ModelScope, render_markdown_lines, wrap_unicode};
     use crate::app::UiRuntime;
diff --git a/crates/owlen-tui/src/commands/mod.rs b/crates/owlen-tui/src/commands/mod.rs
index c4637b2..30e8ed0 100644
--- a/crates/owlen-tui/src/commands/mod.rs
+++ b/crates/owlen-tui/src/commands/mod.rs
@@ -325,6 +325,7 @@ pub fn match_score(candidate: &str, query: &str) -> Option<(usize, usize)> {
 }
 
 #[cfg(test)]
+#[allow(clippy::items_after_test_module)]
 mod tests {
     use super::*;
 
diff --git a/crates/owlen-tui/src/ui.rs b/crates/owlen-tui/src/ui.rs
index c273bc9..2071045 100644
--- a/crates/owlen-tui/src/ui.rs
+++ b/crates/owlen-tui/src/ui.rs
@@ -139,7 +139,7 @@ fn usage_gauge_descriptor(
     }
 
     Some(GaugeDescriptor {
-        title: format!("{title}"),
+        title: title.to_string(),
         detail: format!("{detail} · {shorthand}"),
         percent_label,
         ratio,
@@ -4796,7 +4796,7 @@ fn render_theme_browser(frame: &mut Frame<'_>, app: &ChatApp) {
         ])
     };
 
-    if left_sections.len() >= 1 {
+    if !left_sections.is_empty() {
         let search_paragraph = Paragraph::new(vec![search_line, instruction_line])
             .style(Style::default().bg(palette.highlight).fg(palette.label));
         frame.render_widget(search_paragraph, left_sections[0]);