Why the commits on a user story could display the status Commit not in branch?

For which of the following components is it not recommended to use auto-resolve? Select all that apply!
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You are using the auto-resolve conflict resolution feature, Copado will stop the merge of the feature branch into the promotion branch if it detects a conflict.

Rob, would like to enforce the following quality gates when deploying to INT:
* A static code analysis for all Apex classes and triggers.
* A validation deployment for all Apex classes and triggers.
* A validation deployment for profiles.
What is the easiest way for him to address these requirements?

What is the command sfdx copado:auth:set -a [myOrgAlias] used for?