Changed paths:
M pkg/email/patch.go
M pkg/email/patch_test.go
Log Message:
-----------
pkg/email: limit Fixes tag commit hash to 12 characters
In AI patches generated and sent via lore-relay, the commit hash in
the Fixes tag should be limited to 12 characters.
Update FormatPatchDescription to truncate the hash string if it exceeds
this length to ensure consistent formatting. Update existing tests to
verify the truncation behavior.