refactor: Update file addition confirmation message and add TimeoutError to git error handling

aider/coders/base_coder.py

@@ -1597,7 +1597,9 @@ class Coder:
         added_fnames = []
         group = ConfirmGroup(new_mentions)
         for rel_fname in sorted(new_mentions):
-            if self.io.confirm_ask(f"Add {rel_fname} to the chat?", group=group, allow_never=True):
+            if self.io.confirm_ask(
+                f"Add file to the chat?", subject=rel_fname, group=group, allow_never=True
+            ):
                 self.add_rel_fname(rel_fname)
                 added_fnames.append(rel_fname)
             else:

aider/repo.py

@@ -28,6 +28,7 @@ ANY_GIT_ERROR += [
     ValueError,
     AttributeError,
     AssertionError,
+    TimeoutError,
 ]
 ANY_GIT_ERROR = tuple(ANY_GIT_ERROR)