style: Format code and fix whitespace issues

aider/watch.py

@@ -128,7 +128,7 @@ class FileWatcher:
         """Process the detected changes and update state"""
         if not changes:
             return False
-            
+
         changed_files = {str(Path(change[1])) for change in changes}
         self.changed_files.update(changed_files)
         self.io.interrupt_input()
@@ -138,15 +138,13 @@ class FileWatcher:
         """Watch for file changes and process them"""
         try:
             roots_to_watch = self.get_roots_to_watch()
-            
+
             for changes in watch(
-                *roots_to_watch, 
-                watch_filter=self.filter_func, 
-                stop_event=self.stop_event
+                *roots_to_watch, watch_filter=self.filter_func, stop_event=self.stop_event
             ):
                 if self.handle_changes(changes):
                     return
-                    
+
         except Exception as e:
             if self.verbose:
                 dump(f"File watcher error: {e}")
@@ -156,11 +154,8 @@ class FileWatcher:
         """Start watching for file changes"""
         self.stop_event = threading.Event()
         self.changed_files = set()
-        
-        self.watcher_thread = threading.Thread(
-            target=self.watch_files,
-            daemon=True
-        )
+
+        self.watcher_thread = threading.Thread(target=self.watch_files, daemon=True)
         self.watcher_thread.start()
 
     def stop(self):

tests/basic/test_watch.py

@@ -65,16 +65,16 @@ def test_get_roots_to_watch(tmp_path):
     # Create a test directory structure
     (tmp_path / "included").mkdir()
     (tmp_path / "excluded").mkdir()
-    
+
     io = InputOutput(pretty=False, fancy_input=False, yes=False)
     coder = MinimalCoder(io)
-    
+
     # Test with no gitignore
     watcher = FileWatcher(coder, root=tmp_path)
     roots = watcher.get_roots_to_watch()
     assert len(roots) == 1
     assert roots[0] == str(tmp_path)
-    
+
     # Test with gitignore
     gitignore = tmp_path / ".gitignore"
     gitignore.write_text("excluded/")
@@ -83,20 +83,22 @@ def test_get_roots_to_watch(tmp_path):
     assert len(roots) == 1
     assert Path(roots[0]).name == "included"
 
+
 def test_handle_changes():
     io = InputOutput(pretty=False, fancy_input=False, yes=False)
     coder = MinimalCoder(io)
     watcher = FileWatcher(coder)
-    
+
     # Test no changes
     assert not watcher.handle_changes([])
     assert len(watcher.changed_files) == 0
-    
+
     # Test with changes
-    changes = [('modified', '/path/to/file.py')]
+    changes = [("modified", "/path/to/file.py")]
     assert watcher.handle_changes(changes)
     assert len(watcher.changed_files) == 1
-    assert str(Path('/path/to/file.py')) in watcher.changed_files
+    assert str(Path("/path/to/file.py")) in watcher.changed_files
+
 
 def test_ai_comment_pattern():
     # Create minimal IO and Coder instances for testing