fix: update co-authored-by domain to aider.chat

Co-authored-by: aider (vertex_ai/gemini-2.5-pro-exp-03-25) <[email protected]>

Author: ei-grad

aider/repo.py

@@ -162,7 +162,7 @@ def commit(self, fnames=None, context=None, message=None, aider_edits=False, cod
         Flags:
         - --attribute-author: Modify Author name to "User Name (aider)".
         - --attribute-committer: Modify Committer name to "User Name (aider)".
-        - --attribute-co-authored-by: Add "Co-authored-by: aider (<model>) <noreply@aider.dev>"
+        - --attribute-co-authored-by: Add "Co-authored-by: aider (<model>) <noreply@aider.chat>"
           trailer to the commit message.
 
         Behavior Summary:
@@ -240,7 +240,7 @@ def commit(self, fnames=None, context=None, message=None, aider_edits=False, cod
             if coder and hasattr(coder, "main_model") and coder.main_model.name:
                 model_name = coder.main_model.name
             commit_message_trailer = (
-                f"\n\nCo-authored-by: aider ({model_name}) <noreply@aider.dev>"
+                f"\n\nCo-authored-by: aider ({model_name}) <noreply@aider.chat>"
             )
 
         # Determine if author/committer names should be modified

tests/basic/test_repo.py

@@ -265,7 +265,7 @@ def test_commit_with_co_authored_by(self):
 
             # check the commit message and author/committer
             commit = raw_repo.head.commit
-            self.assertIn("Co-authored-by: aider (gpt-test) <noreply@aider.dev>", commit.message)
+            self.assertIn("Co-authored-by: aider (gpt-test) <noreply@aider.chat>", commit.message)
             self.assertEqual(commit.message.splitlines()[0], "Aider edit")
             # With default (None), co-authored-by takes precedence
             self.assertEqual(commit.author.name, "Test User", msg="Author name should not be modified when co-authored-by takes precedence")
@@ -308,7 +308,7 @@ def test_commit_co_authored_by_with_explicit_name_modification(self):
 
             # check the commit message and author/committer
             commit = raw_repo.head.commit
-            self.assertIn("Co-authored-by: aider (gpt-test-combo) <noreply@aider.dev>", commit.message)
+            self.assertIn("Co-authored-by: aider (gpt-test-combo) <noreply@aider.chat>", commit.message)
             self.assertEqual(commit.message.splitlines()[0], "Aider combo edit")
             # When co-authored-by is true BUT author/committer are explicit True, modification SHOULD happen
             self.assertEqual(commit.author.name, "Test User (aider)", msg="Author name should be modified when explicitly True, even with co-author")