refactor: move FileWatcher initialization to main.py

aider/io.py

@@ -198,6 +198,7 @@ class InputOutput:
         llm_history_file=None,
         editingmode=EditingMode.EMACS,
         fancy_input=True,
+        file_watcher=None,
     ):
         self.placeholder = None
         self.never_prompts = set()
@@ -262,6 +263,8 @@ class InputOutput:
         else:
             self.console = Console(force_terminal=False, no_color=True)  # non-pretty
 
+        self.file_watcher = file_watcher
+
     def _get_style(self):
         style_dict = {}
         if not self.pretty:
@@ -391,8 +394,6 @@ class InputOutput:
     ):
         self.rule()
 
-        gitignore = [str(Path(root) / ".gitignore")]
-        self.file_watcher = FileWatcher(root, encoding=self.encoding, gitignores=gitignore)
         self.file_watcher.start()
 
         rel_fnames = list(rel_fnames)

aider/main.py

@@ -800,7 +800,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
         ignores.append(str(Path(git_root) / ".gitignore"))
     if args.aiderignore:
         ignores.append(args.aiderignore)
-    io.file_watcher = FileWatcher(coder.root, encoding=io.encoding, gitignores=ignores)
+    FileWatcher(coder, encoding=io.encoding, gitignores=ignores)
 
     coder.show_announcements()