diff --git a/arbiter-app/src/main.rs b/arbiter-app/src/main.rs
index e37be8c..abaf64e 100644
--- a/arbiter-app/src/main.rs
+++ b/arbiter-app/src/main.rs
@@ -30,7 +30,7 @@ impl ArbiterRollingWriter {
 impl std::io::Write for ArbiterRollingWriter {
     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
         let now = chrono::Local::now();
-        let filename = format!("arbiter.{}.log", now.format("%Y-%m-%d"));
+        let filename = format!("arbiter.{log_time}.log", log_time = now.format("%Y-%m-%d"));
         let path = self.base_dir.join(filename);
 
         if let Some(parent) = path.parent() {
@@ -85,8 +85,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     "
     );
     info!(
-        "Arbiter Engine: booting version {}",
-        env!("CARGO_PKG_VERSION")
+        "Arbiter Engine: booting version {version}",
+        version = env!("CARGO_PKG_VERSION")
     );
 
     let filter = ArbiterFilter::new();
@@ -210,10 +210,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
             (1920, 1080)
         }
     };
-    info!(
-        "Runner: mapping display boundaries to {}x{}",
-        screen_width, screen_height
-    );
+    info!("Runner: mapping display boundaries to {screen_width}x{screen_height}",);
     arbiter_bridge::runner::spawn(exec_cmd_rx, screen_width, screen_height, filter.clone());
 
     // Signet config is loaded fresh on every execution via signet::load().
diff --git a/arbiter-bridge/src/hand.rs b/arbiter-bridge/src/hand.rs
index 0f72f0c..8f95ba8 100644
--- a/arbiter-bridge/src/hand.rs
+++ b/arbiter-bridge/src/hand.rs
@@ -143,8 +143,9 @@ impl HardwareBridge {
     fn validate_coordinate(&self, x: i32, y: i32) -> Result<(), String> {
         if x < 0 || x > self.screen_width || y < 0 || y > self.screen_height {
             let msg = format!(
-                "Hardware Guard: ({x}, {y}) outside monitor bounds ({}×{})",
-                self.screen_width, self.screen_height
+                "Hardware Guard: ({x}, {y}) outside monitor bounds ({w}x{h})",
+                w = self.screen_width,
+                h = self.screen_height
             );
             warn!(%msg, "Hand: coordinate rejected");
             return Err(msg);
diff --git a/arbiter-bridge/src/inscribe.rs b/arbiter-bridge/src/inscribe.rs
index 6f4b1d2..a07d8df 100644
--- a/arbiter-bridge/src/inscribe.rs
+++ b/arbiter-bridge/src/inscribe.rs
@@ -190,7 +190,10 @@ pub fn dry_run_walk(root: &Path, pattern: &str) -> DryRunReport {
                 let path_str = path.to_string_lossy().to_lowercase();
 
                 if path_str.contains("windows") || path_str.contains("system32") {
-                    warnings.push(format!("System-critical path detected: {}", path.display()));
+                    warnings.push(format!(
+                        "System-critical path detected: {path_name}",
+                        path_name = path.display()
+                    ));
                 }
 
                 debug!(path = %path.display(), "Dry-run: would affect");
diff --git a/arbiter-bridge/src/runner.rs b/arbiter-bridge/src/runner.rs
index 0da9ce6..e586db0 100644
--- a/arbiter-bridge/src/runner.rs
+++ b/arbiter-bridge/src/runner.rs
@@ -225,7 +225,7 @@ pub fn spawn(
 
                 if let ActionType::Wait(ms) = action.action_type {
                     if dry_run {
-                        info!("[DRY-RUN] Would wait for {} ms (execution bypassed)", ms);
+                        info!("[DRY-RUN] Would wait for {ms} ms (execution bypassed)");
                     } else {
                         tokio::time::sleep(std::time::Duration::from_millis(ms)).await;
                     }
@@ -349,8 +349,8 @@ pub fn spawn(
                     error!(%e, id = %node.id, "Runner: action failed");
                     let _ = event_tx
                         .send(RunEvent::Panic(format!(
-                            "Step '{}' failed: {}",
-                            node.label, e
+                            "Step '{label}' failed: {e}",
+                            label = node.label
                         )))
                         .await;
                     break;
diff --git a/arbiter-core/src/atlas.rs b/arbiter-core/src/atlas.rs
index 07081bd..146d6d0 100644
--- a/arbiter-core/src/atlas.rs
+++ b/arbiter-core/src/atlas.rs
@@ -133,7 +133,7 @@ impl Atlas {
                 };
 
                 if !filename.is_empty() {
-                    let path_prefix = format!("FileCreated|{}|", watch_path.display());
+                    let path_prefix = format!("FileCreated|{path}|", path = watch_path.display());
 
                     for (reg_key, reg_ord) in &self.registry {
                         if reg_key.starts_with(&path_prefix) {
@@ -178,7 +178,7 @@ impl Atlas {
         if self.state == EngineState::Idle {
             return;
         }
-        info!("Atlas: {}", reason);
+        info!("Atlas: {reason}");
         if let Some(tx) = self.active_abort.take() {
             let _ = tx.send(());
         }
@@ -411,7 +411,7 @@ impl Atlas {
                             let _ = log_broadcast.send(LogEntry {
                                 time: chrono::Utc::now().to_rfc3339(),
                                 tag: "ATLAS".into(),
-                                message: format!("Decree '{}' registered and saved.", def.label),
+                                message: format!("Decree '{label}' registered and saved.", label = def.label),
                                 is_error: false,
                                 decree_id: Some(def.id.0.clone()),
                             });
@@ -446,7 +446,7 @@ impl Atlas {
                             let _ = log_broadcast.send(LogEntry {
                                 time: chrono::Utc::now().to_rfc3339(),
                                 tag: "VIGIL".into(),
-                                message: format!("Conservatory Wards updated ({} active).", ledger.wards.len()),
+                                message: format!("Conservatory Wards updated ({count} active).", count = ledger.wards.len()),
                                 is_error: false,
                                 decree_id: None,
                             });
@@ -503,7 +503,7 @@ impl Atlas {
 
                                 let key = match removed.summons {
                                     crate::ledger::SummonsDef::FileCreated { ward_id, pattern, .. } => {
-                                        format!("FileCreated|{}|{}", normalize_windows_path(&ward_id), pattern)
+                                        format!("FileCreated|{path}|{pattern}", path = normalize_windows_path(&ward_id))
                                     }
                                     crate::ledger::SummonsDef::Hotkey { combo } => format!("Hotkey|{combo}"),
                                     crate::ledger::SummonsDef::ProcessAppeared { name } => format!("ProcessAppeared|{name}"),
diff --git a/arbiter-core/src/decree.rs b/arbiter-core/src/decree.rs
index a5c375a..272351d 100644
--- a/arbiter-core/src/decree.rs
+++ b/arbiter-core/src/decree.rs
@@ -176,8 +176,8 @@ impl<'de> serde::Deserialize<'de> for DecreeNode {
             "Entry" => NodeState::Empty,
             _ => {
                 return Err(serde::de::Error::custom(format!(
-                    "Unknown node kind: {}",
-                    raw.kind
+                    "Unknown node kind: {kind}",
+                    kind = raw.kind
                 )))
             }
         };
@@ -264,7 +264,7 @@ impl Summons {
                 watch_path,
                 pattern,
                 ..
-            } => format!("FileCreated|{}|{}", watch_path.display(), pattern),
+            } => format!("FileCreated|{path}|{pattern}", path = watch_path.display()),
             #[cfg(feature = "vigil-keys")]
             Self::Hotkey { combo, .. } => format!("Hotkey|{combo}"),
             #[cfg(feature = "vigil-clipboard")]
@@ -519,7 +519,7 @@ fn compute_sha256(path: &PathBuf) -> Option<String> {
         hasher.update(&buffer[..n]);
     }
 
-    Some(format!("{:x}", hasher.finalize()))
+    Some(format!("{hash:x}", hash = hasher.finalize()))
 }
 
 #[cfg(not(feature = "vigil-deep"))]
diff --git a/arbiter-core/src/ledger.rs b/arbiter-core/src/ledger.rs
index 233c7a5..defb25d 100644
--- a/arbiter-core/src/ledger.rs
+++ b/arbiter-core/src/ledger.rs
@@ -233,8 +233,8 @@ impl DecreeDef {
             for (port, target_id) in &node.next_nodes {
                 if !node_ids.contains(target_id) {
                     return Err(format!(
-                        "Node '{}' transition '{}' points to non-existent node '{}'",
-                        node.label, port, target_id
+                        "Node '{label}' transition '{port}' points to non-existent node '{target_id}'",
+                        label = node.label
                     ));
                 }
             }
diff --git a/arbiter-core/src/vigil.rs b/arbiter-core/src/vigil.rs
index 38088b4..02a3f86 100644
--- a/arbiter-core/src/vigil.rs
+++ b/arbiter-core/src/vigil.rs
@@ -300,7 +300,7 @@ pub mod fs {
                             };
 
                             let debounce_sig =
-                                format!("{}|{}", summons.to_registry_key(), filename);
+                                format!("{key}|{filename}", key = summons.to_registry_key());
                             let path_str_check = path_str.clone();
 
                             let tx_clone = tx.clone();
@@ -476,7 +476,7 @@ pub mod keys {
                             if let Some((combo, sum_tx)) = senders.get(&event.id) {
                                 let mut context = super::EnvContext::new();
                                 context.insert("hotkey_combo", combo);
-                                context.insert("timestamp", &format!("{}", std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap_or_default().as_secs()));
+                                context.insert("timestamp", &format!("{secs}", secs = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap_or_default().as_secs()));
                                 context.insert("timestamp_local", &chrono::Local::now().format("%m/%d/%Y %I:%M %p").to_string());
                                 let summons = super::Summons::Hotkey {
                                     combo: combo.clone(),
@@ -607,8 +607,8 @@ pub mod clipboard {
                             context.insert(
                                 "timestamp",
                                 &format!(
-                                    "{}",
-                                    std::time::SystemTime::now()
+                                    "{secs}",
+                                    secs = std::time::SystemTime::now()
                                         .duration_since(std::time::UNIX_EPOCH)
                                         .unwrap_or_default()
                                         .as_secs()
diff --git a/arbiter-core/src/vigil/sys.rs b/arbiter-core/src/vigil/sys.rs
index 92def0e..a029983 100644
--- a/arbiter-core/src/vigil/sys.rs
+++ b/arbiter-core/src/vigil/sys.rs
@@ -46,8 +46,8 @@ pub fn spawn_watcher(
                         context.insert(
                             "timestamp",
                             &format!(
-                                "{}",
-                                std::time::SystemTime::now()
+                                "{secs}",
+                                secs = std::time::SystemTime::now()
                                     .duration_since(std::time::UNIX_EPOCH)
                                     .unwrap_or_default()
                                     .as_secs()
diff --git a/arbiter-forge/src/main.rs b/arbiter-forge/src/main.rs
index d90597f..f9e0b86 100644
--- a/arbiter-forge/src/main.rs
+++ b/arbiter-forge/src/main.rs
@@ -36,7 +36,7 @@ fn generate_decree_id(label: &str) -> String {
         .collect();
 
     if slug.is_empty() {
-        format!("id-{}", CTR.fetch_add(1, Ordering::Relaxed))
+        format!("id-{id}", id = CTR.fetch_add(1, Ordering::Relaxed))
     } else {
         slug
     }
@@ -202,7 +202,7 @@ fn next_new_decree_label() -> String {
             }
         }
     });
-    format!("New Decree {}", max_n + 1)
+    format!("New Decree {n}", n = max_n + 1)
 }
 
 fn sync_ledger_to_ui() {
@@ -779,7 +779,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         {
             use std::io::Write;
             use std::process::{Command, Stdio};
-            info!("Copying to clipboard: {}", text);
+            info!("Copying to clipboard: {text}");
             if let Ok(mut child) = Command::new("clip").stdin(Stdio::piped()).spawn() {
                 if let Some(mut stdin) = child.stdin.take() {
                     let _ = stdin.write_all(text.as_bytes());