Adds 'gt mr' as an alias for 'gt mq' so both work:
- gt mr submit → gt mq submit
- gt mr status → gt mq status
- gt mr list → gt mq list
'MR' (merge request) is the conceptual noun; 'mq' (merge queue) is the
implementation detail. This reduces friction for agents and humans who
think in terms of "I have a merge request."
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>