fix: cargo fmt and suppress eslint unused-var warnings

- Apply cargo fmt formatting fixes to server commands and test files
- Add eslint-disable for intentional destructuring pattern (_ to remove
  key from object) in env/headers remove handlers

https://claude.ai/code/session_01V5tgbLyeWrPW5zZ1toRoPZ

Author: claude

apps/desktop/src-tauri/src/commands/server.rs

@@ -145,7 +145,14 @@ pub async fn save_server_inputs(
     let space_uuid = uuid::Uuid::parse_str(&space_id).map_err(|e| e.to_string())?;
 
     service
-        .update_config(space_uuid, &id, input_values, env_overrides, args_append, extra_headers)
+        .update_config(
+            space_uuid,
+            &id,
+            input_values,
+            env_overrides,
+            args_append,
+            extra_headers,
+        )
         .await
         .map_err(|e| e.to_string())
 }

apps/desktop/src/features/servers/ServersPage.tsx

@@ -1420,6 +1420,7 @@ export function ServersPage() {
                       />
                       <button
                         onClick={() => {
+                          // eslint-disable-next-line @typescript-eslint/no-unused-vars
                           const { [key]: _, ...rest } = configModal.envOverrides;
                           setConfigModal({ ...configModal, envOverrides: rest });
                         }}
@@ -1485,6 +1486,7 @@ export function ServersPage() {
                         />
                         <button
                           onClick={() => {
+                            // eslint-disable-next-line @typescript-eslint/no-unused-vars
                             const { [key]: _, ...rest } = configModal.extraHeaders;
                             setConfigModal({ ...configModal, extraHeaders: rest });
                           }}

crates/mcpmux-core/src/domain/installed_server.rs

@@ -247,10 +247,7 @@ mod tests {
             server.env_overrides.get("NODE_ENV"),
             Some(&"production".to_string())
         );
-        assert_eq!(
-            server.env_overrides.get("DEBUG"),
-            Some(&"true".to_string())
-        );
+        assert_eq!(server.env_overrides.get("DEBUG"), Some(&"true".to_string()));
     }
 
     #[test]
@@ -307,7 +304,10 @@ mod tests {
         let deserialized: InstalledServer =
             serde_json::from_str(&json).expect("Failed to deserialize");
 
-        assert_eq!(deserialized.env_overrides.get("KEY"), Some(&"value".to_string()));
+        assert_eq!(
+            deserialized.env_overrides.get("KEY"),
+            Some(&"value".to_string())
+        );
         assert_eq!(deserialized.args_append, vec!["--flag".to_string()]);
         assert_eq!(
             deserialized.extra_headers.get("X-Test"),
@@ -351,7 +351,10 @@ mod tests {
         // Serialize and deserialize
         let json = serde_json::to_string(&server).expect("serialize");
         let deserialized: InstalledServer = serde_json::from_str(&json).expect("deserialize");
-        assert_eq!(deserialized.env_overrides.get(""), Some(&"value".to_string()));
+        assert_eq!(
+            deserialized.env_overrides.get(""),
+            Some(&"value".to_string())
+        );
     }
 
     #[test]
@@ -365,10 +368,7 @@ mod tests {
             .insert("KEY".to_string(), "second".to_string());
 
         assert_eq!(server.env_overrides.len(), 1);
-        assert_eq!(
-            server.env_overrides.get("KEY"),
-            Some(&"second".to_string())
-        );
+        assert_eq!(server.env_overrides.get("KEY"), Some(&"second".to_string()));
     }
 
     #[test]

tests/rust/tests/database/installed_server.rs

@@ -431,10 +431,7 @@ async fn test_installed_server_env_overrides_persist() {
         loaded.env_overrides.get("NODE_ENV"),
         Some(&"production".to_string())
     );
-    assert_eq!(
-        loaded.env_overrides.get("DEBUG"),
-        Some(&"true".to_string())
-    );
+    assert_eq!(loaded.env_overrides.get("DEBUG"), Some(&"true".to_string()));
 }
 
 #[tokio::test]