[PATCH] checkpatch: recognize Assisted-by: tag

[Michael Bommarito <michael.bommarito@gmail.com>]

Documentation/process/coding-assistants.rst defines an Assisted-by:
trailer for disclosing AI coding tool assistance.  Recognize it and
skip Name <email> validation; format is AGENT_NAME:MODEL_VERSION.

Assisted-by: Claude:claude-opus-4-6
Assisted-by: Codex:gpt-5-4
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
---
 scripts/checkpatch.pl | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e56374662ff7..3b246c915ce8 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -641,6 +641,7 @@ our $signature_tags = qr{(?xi:
 	Reviewed-by:|
 	Reported-by:|
 	Suggested-by:|
+	Assisted-by:|
 	To:|
 	Cc:
 )};
@@ -737,7 +738,7 @@ sub find_standard_signature {
 	my ($sign_off) = @_;
 	my @standard_signature_tags = (
 		'Signed-off-by:', 'Co-developed-by:', 'Acked-by:', 'Tested-by:',
-		'Reviewed-by:', 'Reported-by:', 'Suggested-by:'
+		'Reviewed-by:', 'Reported-by:', 'Suggested-by:', 'Assisted-by:'
 	);
 	foreach my $signature (@standard_signature_tags) {
 		return $signature if (get_edit_distance($sign_off, $signature) <= 2);
@@ -3107,7 +3108,10 @@ sub process {

 			my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
 			my $suggested_email = format_email(($email_name, $name_comment, $email_address, $comment));
-			if ($suggested_email eq "") {
+			if ($sign_off =~ /^assisted-by:$/i) {
+				# Assisted-by: uses AGENT_NAME:MODEL_VERSION
+				# format, not Name <email>.
+			} elsif ($suggested_email eq "") {
 				ERROR("BAD_SIGN_OFF",
 				      "Unrecognized email address: '$email'\n" . $herecurr);
 			} else {
--
2.49.0