refactor(python): reorder imports and improve error handling formatting

Reorder pyo3 imports in document.rs and engine.rs for consistency.
Format error handling code to stay within 100 character line limits
and improve readability.

Author: zTgx

crates/vectorless-py/src/document.rs

@@ -5,8 +5,8 @@
 
 use std::sync::Arc;
 
-use pyo3::prelude::*;
 use pyo3::exceptions::PyRuntimeError;
+use pyo3::prelude::*;
 use pyo3_async_runtimes::tokio::future_into_py;
 use tokio::sync::Mutex;
 
@@ -380,9 +380,7 @@ impl PyDocument {
         future_into_py(py, async move {
             let num = node_id
                 .strip_prefix('n')
-                .ok_or_else(|| {
-                    PyRuntimeError::new_err("NodeId must start with 'n'")
-                })?
+                .ok_or_else(|| PyRuntimeError::new_err("NodeId must start with 'n'"))?
                 .parse::<u64>()
                 .map_err(|_| PyRuntimeError::new_err("Invalid NodeId"))?;
             let nav = nav.lock().await;
@@ -401,9 +399,7 @@ impl PyDocument {
         future_into_py(py, async move {
             let num = node_id
                 .strip_prefix('n')
-                .ok_or_else(|| {
-                    PyRuntimeError::new_err("NodeId must start with 'n'")
-                })?
+                .ok_or_else(|| PyRuntimeError::new_err("NodeId must start with 'n'"))?
                 .parse::<u64>()
                 .map_err(|_| PyRuntimeError::new_err("Invalid NodeId"))?;
             let nav = nav.lock().await;
@@ -422,9 +418,7 @@ impl PyDocument {
         future_into_py(py, async move {
             let num = node_id
                 .strip_prefix('n')
-                .ok_or_else(|| {
-                    PyRuntimeError::new_err("NodeId must start with 'n'")
-                })?
+                .ok_or_else(|| PyRuntimeError::new_err("NodeId must start with 'n'"))?
                 .parse::<u64>()
                 .map_err(|_| PyRuntimeError::new_err("Invalid NodeId"))?;
             let nav = nav.lock().await;

crates/vectorless-py/src/engine.rs

@@ -3,8 +3,8 @@
 
 //! Engine Python wrapper — async compile/forget/list_documents.
 
-use pyo3::prelude::*;
 use pyo3::exceptions::PyRuntimeError;
+use pyo3::prelude::*;
 use pyo3_async_runtimes::tokio::future_into_py;
 use std::sync::Arc;
 use tokio::runtime::Runtime;
@@ -73,7 +73,9 @@ async fn run_load_document(engine: Arc<Engine>, doc_id: String) -> PyResult<PyDo
             let navigator = vectorless_primitives::DocumentNavigator::new(d);
             Ok(PyDocument::from_navigator(navigator))
         }
-        None => Err(PyRuntimeError::new_err(format!("Document not found: {doc_id}"))),
+        None => Err(PyRuntimeError::new_err(format!(
+            "Document not found: {doc_id}"
+        ))),
     }
 }
 
@@ -166,9 +168,8 @@ impl PyEngine {
             builder.build().await
         });
 
-        let engine = engine.map_err(|e| {
-            PyRuntimeError::new_err(format!("Failed to create engine: {}", e))
-        })?;
+        let engine = engine
+            .map_err(|e| PyRuntimeError::new_err(format!("Failed to create engine: {}", e)))?;
 
         Ok(Self {
             inner: Arc::new(engine),